Maintenance And Service Guide HP EliteDesk 800 G2 Desktop MiniHP 705 ProDesk 600 P Elite Desk Mini, Pro 400 MP9 Mi
User Manual: HP EliteDesk 800 G2 Desktop Mini, HP EliteDesk 705 G2 Desktop Mini, HP ProDesk 600 G2 Desktop Mini, HP ProDesk 400 G2 Desktop Mini, HP MP9 G2 shared.swissparts.ch - /Manuals/HP/Notebook/ProDesk/
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- Product features
- Illustrated parts catalog
- Routine care, SATA drive guidelines, and disassembly preparation
- Removal and replacement procedures – desktop mini (DM) chassis
- Preparation for disassembly
- Top cover
- Front bezel
- Hard drive
- Secondary fan (EliteDesk 800 and MP9 models only)
- Drive cage
- M.2 PCIe solid state drive (SSD)
- WLAN module
- External antenna
- RTC battery
- Thermal sensor
- Fan
- Power switch/light cover
- Memory
- Heat sink
- Processor – Intel models
- Speaker
- Expansion connector board
- System board
- Internal WLAN antenna cable removal/installation
- Changing from desktop to tower configuration
- Computer Setup (F10) Utility
- Troubleshooting without diagnostics
- Safety and comfort
- Before you call for technical support
- Helpful hints
- Solving general problems
- Solving power problems
- Solving hard drive problems
- Solving media card reader problems
- Solving display problems
- Solving audio problems
- Solving printer problems
- Solving keyboard and mouse problems
- Solving Hardware Installation Problems
- Solving Network Problems
- Solving memory problems
- Solving CD-ROM and DVD problems
- Solving USB flash drive problems
- Solving front panel component problems
- Solving Internet access problems
- Solving software problems
- POST error messages and diagnostic front panel LEDs and audible codes
- Password security and resetting CMOS
- Using HP PC Hardware Diagnostics (UEFI)HP PC Hardware Diagnostics
- System backup and recovery
- Power Cord Set Requirements
- Statement of Volatility
- Specifications
- Index
Maintenance and Service Guide
HP EliteDesk 800 G2 Desktop Mini
HP EliteDesk 705 G2 Desktop Mini
HP ProDesk 600 G2 Desktop Mini
HP ProDesk 400 G2 Desktop Mini
HP MP9 G2 Retail System
© Copyright 2015, 2016 HP Development
Company, L.P.
AMD is a trademark of Advanced Micro Devices,
Inc. Bluetooth is a trademark owned by its
proprietor and used by HP Inc. under license.
Intel, Celeron, and Pentium are trademarks of
Intel Corporation in the U.S. and other countries.
Microsoft and Windows are trademarks of the
Microsoft group of companies.
The information contained herein is subject to
change without notice. The only warranties for
HP products and services are set forth in the
express warranty statements accompanying
such products and services. Nothing herein
should be construed as constituting an
additional warranty. HP shall not be liable for
technical or editorial errors or omissions
contained herein.
Second Edition (July 2016)
First Edition (October 2016)
Document Part Number: 822871-002
Product notice
This user guide describes features that are
common to most models. Some features may
not be available on your computer.
Not all features are available in all editions of
Windows. This computer may require upgraded
and/or separately purchased hardware, drivers
and/or software to take full advantage of
Windows functionality. Go to
http://www.microsoft.com for details.
Software terms
By installing, copying, downloading, or otherwise
using any software product preinstalled on this
computer, you agree to be bound by the terms
of the HP End User License Agreement (EULA). If
you do not accept these license terms, your sole
remedy is to return the entire unused product
(hardware and software) within 14 days for a full
refund subject to the refund policy of your seller.
For any further information or to request a full
refund of the price of the computer, please
contact your seller.
Safety warning notice
WARNING! To reduce the possibility of heat-related injuries or of overheating the device, do not place
the device directly on your lap or obstruct the device air vents. Use the device only on a hard, at surface. Do not
allow another hard surface, such as an adjoining optional printer, or a soft surface, such as pillows or rugs or
clothing, to block airow. Also, do not allow the AC adapter to contact the skin or a soft surface, such as pillows
or rugs or clothing, during operation. The device and the AC adapter comply with the user-accessible surface
temperature limits dened by the International Standard for Safety of Information Technology Equipment (IEC
60950).
iii
iv Safety warning notice
Table of contents
1 Product features ....................................................................................................................................................................................... 1
Standard conguration features ............................................................................................................................................ 1
Front panel components (EliteDesk 800, ProDesk 600, and HP MP9) ............................................................................ 1
Front panel components (EliteDesk 705 and ProDesk 400) ............................................................................................. 2
Rear panel components (EliteDesk 800, EliteDesk 705, ProDesk 600, and HP MP9) .................................................. 3
Rear panel components (ProDesk 400) ................................................................................................................................ 4
Serial number location ............................................................................................................................................................. 5
2 Illustrated parts catalog ........................................................................................................................................................................... 6
Desktop Mini (DM) chassis spare parts .................................................................................................................................. 6
Computer major components ............................................................................................................................ 6
Cables .................................................................................................................................................................... 8
Misc parts .............................................................................................................................................................. 9
Drives ................................................................................................................................................................... 11
3 Routine care, SATA drive guidelines, and disassembly preparation ............................................................................................... 12
Electrostatic discharge information .................................................................................................................................... 12
Generating static ............................................................................................................................................... 12
Preventing electrostatic damage to equipment ........................................................................................... 13
Personal grounding methods and equipment .............................................................................................. 13
Grounding the work area .................................................................................................................................. 13
Recommended materials and equipment ..................................................................................................... 14
Operating guidelines .............................................................................................................................................................. 14
Routine care ............................................................................................................................................................................ 15
General cleaning safety precautions .............................................................................................................. 15
Cleaning the Computer Case ........................................................................................................................... 15
Cleaning the keyboard ...................................................................................................................................... 15
Cleaning the monitor ........................................................................................................................................ 16
Cleaning the mouse .......................................................................................................................................... 16
Service considerations .......................................................................................................................................................... 16
Tools and software Requirements ................................................................................................................. 16
Screws ................................................................................................................................................................. 16
Cables and connectors ..................................................................................................................................... 17
Hard Drives ......................................................................................................................................................... 17
Lithium coin cell battery ................................................................................................................................... 17
SATA hard drives ..................................................................................................................................................................... 17
v
SATA hard drive cables .......................................................................................................................................................... 18
SATA data cable .................................................................................................................................................. 18
SMART ATA drives ................................................................................................................................................................... 18
Cable management ............................................................................................................................................................... 19
4 Removal and replacement procedures – desktop mini (DM) chassis ............................................................................................ 20
Preparation for disassembly ................................................................................................................................................ 20
Top cover ................................................................................................................................................................................. 21
Front bezel .............................................................................................................................................................................. 22
Hard drive ................................................................................................................................................................................ 23
Secondary fan (EliteDesk 800 and MP9 models only) ..................................................................................................... 26
Drive cage ................................................................................................................................................................................ 27
M.2 PCIe solid state drive (SSD) ........................................................................................................................................... 28
WLAN module ......................................................................................................................................................................... 30
External antenna .................................................................................................................................................................... 32
RTC battery ............................................................................................................................................................................. 34
Thermal sensor ...................................................................................................................................................................... 36
Fan ............................................................................................................................................................................................ 37
Power switch/light cover ...................................................................................................................................................... 38
Memory .................................................................................................................................................................................... 39
SODIMMs ............................................................................................................................................................. 39
SODIMM specications ...................................................................................................................................... 39
Populating SODIMM sockets ............................................................................................................................ 40
Replacing SODIMMs ........................................................................................................................................... 41
Heat sink .................................................................................................................................................................................. 43
Processor – Intel models ...................................................................................................................................................... 45
Speaker .................................................................................................................................................................................... 47
Expansion connector board .................................................................................................................................................. 48
System board .......................................................................................................................................................................... 49
System board callouts, EliteDesk 800, ProDesk 600, and HP MP9 Retail System ................................. 51
System board callouts, EliteDesk 705 ........................................................................................................... 52
System board callouts, ProDesk 400 ............................................................................................................. 53
Internal WLAN antenna cable removal/installation .......................................................................................................... 54
Changing from desktop to tower conguration ................................................................................................................ 57
5 Computer Setup (F10) Utility ................................................................................................................................................................ 58
Computer Setup (F10) Utilities ............................................................................................................................................ 58
Using Computer Setup (F10) Utilities ............................................................................................................. 58
Computer Setup–Main ...................................................................................................................................... 60
Computer Setup—Security .............................................................................................................................. 62
Computer Setup—Advanced ........................................................................................................................... 64
vi
Recovering the Conguration Settings ............................................................................................................................... 70
6 Troubleshooting without diagnostics ................................................................................................................................................. 71
Safety and comfort ................................................................................................................................................................ 71
Before you call for technical support .................................................................................................................................. 71
Helpful hints ............................................................................................................................................................................ 72
Solving general problems ..................................................................................................................................................... 73
Solving power problems ....................................................................................................................................................... 77
Solving hard drive problems ................................................................................................................................................ 78
Solving media card reader problems .................................................................................................................................. 80
Solving display problems ...................................................................................................................................................... 81
Solving audio problems ........................................................................................................................................................ 86
Solving printer problems ...................................................................................................................................................... 88
Solving keyboard and mouse problems ............................................................................................................................. 89
Solving Hardware Installation Problems ............................................................................................................................ 90
Solving Network Problems ................................................................................................................................................... 92
Solving memory problems ................................................................................................................................................... 95
Solving CD-ROM and DVD problems ................................................................................................................................... 96
Solving USB ash drive problems ........................................................................................................................................ 99
Solving front panel component problems ....................................................................................................................... 100
Solving Internet access problems ..................................................................................................................................... 100
Solving software problems ................................................................................................................................................ 102
7 POST error messages and diagnostic front panel LEDs and audible codes ............................................................................... 103
POST numeric codes and text messages ......................................................................................................................... 103
Interpreting system validation diagnostic front panel LEDs and audible codes ....................................................... 108
8 Password security and resetting CMOS ............................................................................................................................................ 110
Resetting the password jumper ........................................................................................................................................ 110
Clearing and resetting the BIOS ........................................................................................................................................ 112
9 Using HP PC Hardware Diagnostics (UEFI)HP PC Hardware Diagnostics .................................................................................... 114
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device ............................................................................. 114
10 System backup and recovery ........................................................................................................................................................... 116
Backing up, restoring, and recovering in Windows 10 ................................................................................................... 116
Creating recovery media and backups ........................................................................................................ 116
Creating HP Recovery media (select products only) ............................................................. 116
Using Windows tools ...................................................................................................................................... 118
Restore and recovery ..................................................................................................................................... 118
vii
Recovering using HP Recovery Manager ................................................................................ 118
What you need to know before you get started ............................................... 118
Using the HP Recovery partition (select products only) .................................. 119
Using HP Recovery media to recover .................................................................. 119
Changing the computer boot order .................................................................... 120
Removing the HP Recovery partition (select products only) .......................... 120
Backing up, restoring, and recovering in Windows 8.1 or Windows 8 ........................................................................ 120
Creating recovery media and backups ........................................................................................................ 120
Restoring and recovering using Windows tools ......................................................................................... 121
Using Reset when the system is not responding .................................................................. 121
Recovery using the Windows recovery USB ash drive ....................................................... 121
Recovery using Windows operating system media (purchased separately) .................... 122
Backing up, restoring, and recovering in Windows 7 ..................................................................................................... 122
Creating recovery media ................................................................................................................................ 123
Creating recovery media using HP Recovery Manager (select models only) ................... 123
Creating recovery discs with HP Recovery Disc Creator (select models only) .................. 124
Creating recovery discs ......................................................................................... 125
Backing up your information .................................................................................................... 125
System Restore ............................................................................................................................................... 126
System Recovery ............................................................................................................................................. 126
System Recovery when Windows is responding ................................................................... 126
System Recovery when Windows is not responding ............................................................ 127
System Recovery using recovery media (select models only) ............................................ 127
Using HP Recovery Disc operating system discs (select models only) .............................. 128
Appendix A Power Cord Set Requirements ......................................................................................................................................... 130
General Requirements ........................................................................................................................................................ 130
Japanese Power Cord Requirements ............................................................................................................................... 130
Country-Specic Requirements ........................................................................................................................................ 131
Appendix B Statement of Volatility ....................................................................................................................................................... 132
Appendix C Specications ...................................................................................................................................................................... 133
Index ........................................................................................................................................................................................................... 134
viii
1 Product features
Standard conguration features
Features may vary depending on the model. For a complete listing of the hardware and software installed in the
computer, run the diagnostic utility (included on some computer models only).
NOTE: This computer model can be used in a tower orientation or a desktop orientation. The tower stand is
sold separately.
CAUTION: Several well-known vulnerabilities exist when a computer is in the Sleep state. To prevent an
unauthorized user from accessing data on your computer, even encrypted data, HP recommends that you
always initiate Hibernation instead of Sleep anytime the computer will be out of your physical possession. This
practice is particularly important when you travel with your computer.
Front panel components (EliteDesk 800, ProDesk 600, and HP MP9)
NOTE: Your computer model may look slightly dierent from the illustration in this section.
Item Component Item Component
1 Headphone Connector 5 USB 3.0 Port
2 Microphone or Headphone Connector (software
selectable, default mode is microphone)
6 HDD Activity LED
3 USB 3.0 Type C Port 7 Dual-State Power Button
4 USB 3.0 Port–Charging
NOTE: The USB 3.0 Port–Charging also provides current to charge a device such as a Smart Phone. The charging current is available
whenever the AC power cord is connected to the system, even when the system is o.
NOTE: The Power On Light is normally white when the power is on. If it is ashing red, there is a problem with the computer and it is
displaying a diagnostic code. Refer to the Interpreting system validation diagnostic front panel LEDs and audible codes on page 108 to
interpret the code.
Standard conguration features 1
Front panel components (EliteDesk 705 and ProDesk 400)
NOTE: Your computer model may look slightly dierent from the illustration in this section.
Item Component Item Component
1 Headphone Connector 4 USB 3.0 Port
2 Microphone Connector 5 HDD Activity LED
3 USB 3.0 Port-Charging
NOTE: This USB 3.0 connector does not oer
port charging on 400 models.
6 Dual-State Power Button
NOTE: The USB 3.0 Port–Charging also provides current to charge a device such as a Smart Phone. The charging current is available
whenever the AC power cord is connected to the system, even when the system is o.
NOTE: The Power On Light is normally white when the power is on. If it is ashing red, there is a problem with the computer and it is
displaying a diagnostic code. Refer to the Interpreting system validation diagnostic front panel LEDs and audible codes on page 108 to
interpret the code.
2 Chapter 1 Product features
Rear panel components (EliteDesk 800, EliteDesk 705, ProDesk 600,
and HP MP9)
NOTE: Your computer model may look slightly dierent from the illustration in this section.
Item Component Item Component
1 External Antenna Connector (optional) 8 VGA Monitor Connector
2 Thumbscrew 9 DisplayPort (default, shown), HDMI, or Serial
Connector
3 Padlock Loop 10 USB 3.0 Ports (2) (blue)
4 Cable Lock Slot 11 USB 3.0 Ports (2) (blue) with support for wake
from S4/S5 power states (not for 705 models)
NOTE: On 705 models this is a USB 2.0 port
that supports only the S4 power state.
5 External Antenna Connector (optional) 12 RJ-45 Network Connector
6 Wireless antenna 13 Power Connector
7 DisplayPort Monitor Connector
Rear panel components (EliteDesk 800, EliteDesk 705, ProDesk 600, and HP MP9) 3
Rear panel components (ProDesk 400)
NOTE: Your computer model may look slightly dierent from the illustration in this section.
Item Component Item Component
1 External Antenna Connector (optional) 8 VGA Monitor Connector
2 Thumbscrew 9 Serial Port
3 Padlock Loop 10 USB 3.0 Ports (2) (blue) with support for wake
from S4/S5 power states
4 Cable Lock Slot 11 USB 2.0 Connectors (2) (black)
5 External Antenna Connector (optional) 12 RJ-45 Network Connector
6 Wireless antenna 13 Power Connector
7 DisplayPort Monitor Connector
4 Chapter 1 Product features
Serial number location
Each computer has a unique serial number and a product ID number that are located on the exterior of the
computer. Keep these numbers available for use when contacting customer service for assistance.
Serial number location 5
2 Illustrated parts catalog
Desktop Mini (DM) chassis spare parts
NOTE: HP continually improves and changes product parts. For complete and current information on
supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then follow
the on-screen instructions.
Computer major components
Item Description
(1) Top cover
(2) Front bezel (ProDesk model shown)
(3) External power supply, 90W
90 W
65 W
(4) System board (includes replacement thermal material)
6 Chapter 2 Illustrated parts catalog
Item Description
(5) Memory modules (DDR3, PC3-12800, 1600-MHz)(for use in EliteDesk 705 models)
8-GB
4-GB
*Memory modules (DDR4, PC4-17000, 2133-MHz)(for use in EliteDesk 800, ProDesk 600, ProDesk 400, and MP9 models)
16-GB
8-GB
4-GB
*Intel Processors (800, 600, 400, MP9 models; include replacement thermal material)
Intel Core i7-6700
Intel Core i7-6700T
Intel Core i5-6600
Intel Core i5-6600T
Intel Core i5-6500
Intel Core i7-6500T
Intel Core i3-6320
Intel Core i3-6300T
Intel Core i3-6100T
Intel Pentium G4500T
Intel Pentium G4400T
Intel Pentium G4400TE (MP9 G2 models only)
Intel Celeron G3900T
Intel Celeron G3900TE (MP9 G2 models only)
*AMD Processors (705 models; not replaceable)
AMD PRO A12 APU with AMD Radeon™ R7 HD Graphics
AMD PRO A10 APU with AMD Radeon R7 HD Graphics
AMD PRO A8 APU with AMD Radeon R6 HD Graphics
AMD PRO A6 APU with AMD Radeon R5 HD Graphics
Desktop Mini (DM) chassis spare parts 7
Cables
Item Description
(1) SATA cable/connector
*Adapter, DisplayPort to HDMI 1.4
*Adapter, DisplayPort to VGA
*Adapter, DisplayPort to DVI
*Adapter, USB-C to USB 3.0 (800, 600, MP9 models)
*DisplayPort cable
*USB to serial adapter
8 Chapter 2 Illustrated parts catalog
Misc parts
Item Description
(1) Heat sink
(2) Fan
(3) Secondary hard drive fan (for use in EliteDesk 800 and MP9, 65W models)
(4) Speaker
(5) Power switch/light cover
(6) Option board, HDMI
(7) Option board, serial port
*Option board, DisplayPort (not illstrated)
(8) Thermal sensor
(9) Hood sensor assembly
*Stand
*Port cover
*HP Ultraslim Keyed Cable Lock
Desktop Mini (DM) chassis spare parts 9
Item Description
*WLAN modules:
Intel Dual Band Wireless-AC 7265 NV
Intel Dual Band Wireless-AC 8260 + Bluetooth 4.0
Intel Dual Band Wireless-AC 3165 + Bluetooth 4.0
HP WLAN 802.11 a/b/g/n + Bluetooth 4.0
*Antenna, dual band dipole, 802.11a/b/g/n + Velcro
*External antenna kit
*Expansion Module Kit
Hard drive – I/O (includes screws)
I/O
Optical drive
USB 3.0 Type A-B
USB 3.0 Type A-B (short)
*Security/Dual VESA Sleeve
*Screw Kit
*Mouse
USB, laser
USB, optical
Washable
Wireless
Antimicrobial
Hardened
*Keyboards
USB slim
USB
Wireless
Washable
Smart card
Conferencing
Antimicrobial
10 Chapter 2 Illustrated parts catalog
Drives
Description
Hard drives
2 TB, 5400 rpm, hard drive, 2.5-inch
1 TB, 7200 rpm, hard drive, 2.5-inch
1 TB, 7200 rpm, hard drive, 2.5-inch, SSHD (hybrid SSD)
500 GB, 7200 rpm hard drive, 2.5-inch
500 GB, 2.5-inch, SSHD (hybrid SSD)
500 GB, 7200 rpm hard drive, 2.5-inch, OPAL 2, SED
500 GB, 5400 rpm hard drive, 2.5-inch, FIPS
Solid-state drives
512 GB solid-state drive (SSD), 3D, NAND
256 GB solid-state drive (SSD), OPAL 2, self-encrypting (SED)
256 GB solid-state drive (SSD)
256 GB solid-state drive (SSD), 3D, NAND
180 GB solid-state drive (SSD), SATA 6.0, MLC
180 GB solid-state drive (SSD)
128 GB solid-state drive (SSD)
128 GB solid-state drive (SSD), OPAL 2, Self-encrypting Drive (SED), SATA 6.0
128 GB solid-state drive (SSD), 3D, NAND
120 GB solid-state drive (SSD), SATA 6.0, MLC
120 GB solid-state drive (SSD)
M.2 drive
256 GB solid-state drive (SSD), PCIe, 2280, NVMe
256 GB solid-state drive (SSD), PCIe, 2280SS
128 GB solid-state drive (SSD), PCIe, 2280, NVMe
128 GB solid-state drive (SSD), PCIe, 2280SS
External optical drive
8x DVD drive
Desktop Mini (DM) chassis spare parts 11
3 Routine care, SATA drive guidelines, and
disassembly preparation
This chapter provides general service information for the computer. Adherence to the procedures and
precautions described in this chapter is essential for proper service.
CAUTION: When the computer is plugged into an AC power source, voltage is always applied to the system
board. You must disconnect the power cord from the power source before opening the computer to prevent
system board or component damage.
Electrostatic discharge information
A sudden discharge of static electricity from your nger or other conductor can destroy static-sensitive devices
or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic device exposed to
electrostatic discharge (ESD) may not appear to be aected at all and can work perfectly throughout a normal
cycle. The device may function normally for a while, but it has been degraded in the internal layers, reducing its
life expectancy.
Networks built into many integrated circuits provide some protection, but in many cases, the discharge contains
enough power to alter device parameters or melt silicon junctions.
Generating static
The following table shows that:
●Dierent activities generate dierent amounts of static electricity.
●Static electricity increases as humidity decreases.
Relative Humidity
Event 55% 40% 10%
Walking across carpet
Walking across vinyl oor
Motions of bench worker
Removing DIPs from plastic tube
7,500 V
3,000 V
400 V
400 V
15,000 V
5,000 V
800 V
700 V
35,000 V
12,000 V
6,000 V
2,000 V
Removing DIPs from vinyl tray
Removing DIPs from Styrofoam
Removing bubble pack from PCB
Packing PCBs in foam-lined box
2,000 V
3,500 V
7,000 V
5,000 V
4,000 V
5,000 V
20,000 V
11,000 V
11,500 V
14,500 V
26,500 V
21,000 V
These are then multi-packaged inside plastic tubes, trays, or Styrofoam.
NOTE: 700 volts can degrade a product.
12 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation
Preventing electrostatic damage to equipment
Many electronic components are sensitive to ESD. Circuitry design and structure determine the degree of
sensitivity. The following packaging and grounding precautions are necessary to prevent damage to electric
components and accessories.
●To avoid hand contact, transport products in static-safe containers such as tubes, bags, or boxes.
●Protect all electrostatic parts and assemblies with conductive or approved containers or packaging.
●Keep electrostatic sensitive parts in their containers until they arrive at static-free stations.
●Place items on a grounded surface before removing them from their container.
●Always be properly grounded when touching a sensitive component or assembly.
●Avoid contact with pins, leads, or circuitry.
●Place reusable electrostatic-sensitive parts from assemblies in protective packaging or conductive foam.
Personal grounding methods and equipment
Use the following equipment to prevent static electricity damage to equipment:
●Wrist straps are exible straps with a maximum of one-megohm ± 10% resistance in the ground cords. To
provide proper ground, a strap must be worn snug against bare skin. The ground cord must be connected
and t snugly into the banana plug connector on the grounding mat or workstation.
●Heel straps/Toe straps/Boot straps can be used at standing workstations and are compatible with most
types of shoes or boots. On conductive oors or dissipative oor mats, use them on both feet with a
maximum of one-megohm ± 10% resistance between the operator and ground.
Static Shielding Protection Levels
Method Voltage
Antistatic plastic
Carbon-loaded plastic
Metallized laminate
1,500
7,500
15,000
Grounding the work area
To prevent static damage at the work area, use the following precautions:
●Cover the work surface with approved static-dissipative material. Provide a wrist strap connected to the
work surface and properly grounded tools and equipment.
●Use static-dissipative mats, foot straps, or air ionizers to give added protection.
●Handle electrostatic sensitive components, parts, and assemblies by the case or PCB laminate. Handle
them only at static-free work areas.
●Turn o power and input signals before inserting and removing connectors or test equipment.
●Use xtures made of static-safe materials when xtures must directly contact dissipative surfaces.
●Keep work area free of nonconductive materials such as ordinary plastic assembly aids and Styrofoam.
●Use eld service tools, such as cutters, screwdrivers, and vacuums, that are conductive.
Electrostatic discharge information 13
Recommended materials and equipment
Materials and equipment that are recommended for use in preventing static electricity include:
●Antistatic tape
●Antistatic smocks, aprons, or sleeve protectors
●Conductive bins and other assembly or soldering aids
●Conductive foam
●Conductive tabletop workstations with ground cord of one-megohm +/- 10% resistance
●Static-dissipative table or oor mats with hard tie to ground
●Field service kits
●Static awareness labels
●Wrist straps and footwear straps providing one-megohm +/- 10% resistance
●Material handling packages
●Conductive plastic bags
●Conductive plastic tubes
●Conductive tote boxes
●Opaque shielding bags
●Transparent metallized shielding bags
●Transparent shielding tubes
Operating guidelines
To prevent overheating and to help prolong the life of the computer:
●Keep the computer away from excessive moisture, direct sunlight, and extremes of heat and cold.
●Operate the computer on a sturdy, level surface. Leave a 10.2-cm (4-inch) clearance on all vented sides of
the computer and above the monitor to permit the required airow.
●Never restrict the airow into the computer by blocking any vents or air intakes. Do not place the keyboard,
with the keyboard feet down, directly against the front of the desktop unit as this also restricts airow.
●Occasionally clean the air vents on all vented sides of the computer. Lint, dust, and other foreign matter can
block the vents and limit the airow. Be sure to unplug the computer before cleaning the air vents.
●Never operate the computer with the cover or side panel removed.
●Do not stack computers on top of each other or place computers so near each other that they are subject
to each other’s re-circulated or preheated air.
●If the computer is to be operated within a separate enclosure, intake and exhaust ventilation must be
provided on the enclosure, and the same operating guidelines listed above will still apply.
●Keep liquids away from the computer and keyboard.
●Never cover the ventilation slots on the monitor with any type of material.
●Install or enable power management functions of the operating system or other software, including sleep
states.
14 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation
Routine care
General cleaning safety precautions
1. Never use solvents or ammable solutions to clean the computer.
2. Never immerse any parts in water or cleaning solutions; apply any liquids to a clean cloth and then use the
cloth on the component.
3. Always unplug the computer when cleaning with liquids or damp cloths.
4. Always unplug the computer before cleaning the keyboard, mouse, or air vents.
5. Disconnect the keyboard before cleaning it.
6. Wear safety glasses equipped with side shields when cleaning the keyboard.
Cleaning the Computer Case
Follow all safety precautions in General cleaning safety precautions on page 15 before cleaning the computer.
To clean the computer case, follow the procedures described below:
●To remove light stains or dirt, use plain water with a clean, lint-free cloth or swab.
●For stronger stains, use a mild dishwashing liquid diluted with water. Rinse well by wiping it with a cloth or
swab dampened with clear water.
●For stubborn stains, use isopropyl (rubbing) alcohol. No rinsing is needed as the alcohol will evaporate
quickly and not leave a residue.
●After cleaning, always wipe the unit with a clean, lint-free cloth.
●Occasionally clean the air vents on the computer. Lint and other foreign matter can block the vents and
limit the airow.
Cleaning the keyboard
Follow all safety precautions in General cleaning safety precautions on page 15 before cleaning the keyboard.
To clean the tops of the keys or the keyboard body, follow the procedures described in Cleaning the Computer
Case on page 15.
When cleaning debris from under the keys, review all rules in General cleaning safety precautions on page 15
before following these procedures:
CAUTION: Use safety glasses equipped with side shields before attempting to clean debris from under the
keys.
●Visible debris underneath or between the keys may be removed by vacuuming or shaking.
●Canned, pressurized air may be used to clean debris from under the keys. Caution should be used as too
much air pressure can dislodge lubricants applied under the wide keys.
●If you remove a key, use a specially designed key puller to prevent damage to the keys. This tool is
available through many electronic supply outlets.
Routine care 15
CAUTION: Never remove a wide leveled key (like the space bar) from the keyboard. If these keys are
improperly removed or installed, the keyboard may not function properly.
●Cleaning under a key may be done with a swab moistened with isopropyl alcohol and squeezed out. Be
careful not to wipe away lubricants necessary for proper key functions. Use tweezers to remove any bers
or dirt in conned areas. Allow the parts to air dry before reassembly.
Cleaning the monitor
●Wipe the monitor screen with a clean cloth moistened with water or with a towelette designed for cleaning
monitors. Do not use sprays or aerosols directly on the screen; the liquid may seep into the housing and
damage a component. Never use solvents or ammable liquids on the monitor.
●To clean the monitor body follow the procedures in Cleaning the Computer Case on page 15.
Cleaning the mouse
Before cleaning the mouse, ensure that the power to the computer is turned o.
●Clean the mouse ball by rst removing the retaining plate and the ball from the housing. Pull out any debris
from the ball socket and wipe the ball with a clean, dry cloth before reassembly.
●To clean the mouse body, follow the procedures in Cleaning the Computer Case on page 15.
Service considerations
Listed below are some of the considerations that you should keep in mind during the disassembly and assembly
of the computer.
Tools and software Requirements
To service the computer, you need the following:
●Torx T-15 screwdriver
●Torx T-15 screwdriver with small diameter shank (for certain front bezel removal)
●Flat-bladed screwdriver (may sometimes be used in place of the Torx screwdriver)
●Phillips #2 screwdriver
●Diagnostics software
●Tamper-resistant T-15 wrench
Screws
The screws used in the computer are not interchangeable. They may have standard or metric threads and may
be of dierent lengths. If an incorrect screw is used during the reassembly process, it can damage the unit. HP
strongly recommends that all screws removed during disassembly be kept with the part that was removed, then
returned to their proper locations.
CAUTION: Metric screws have a black nish. U.S. screws have a silver nish and are used on hard drives only.
CAUTION: As each subassembly is removed from the computer, it should be placed away from the work area to
prevent damage.
16 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation
Cables and connectors
Most cables used throughout the unit are at, exible cables. These cables must be handled with care to avoid
damage. Apply only the tension required to seat or unseat the cables during insertion or removal from the
connector. Handle cables by the connector whenever possible. In all cases, avoid bending or twisting the cables,
and ensure that the cables are routed in such a way that they cannot be caught or snagged by parts being
removed or replaced.
CAUTION: When servicing this computer, ensure that cables are placed in their proper location during the
reassembly process. Improper cable placement can damage the computer.
Hard Drives
Handle hard drives as delicate, precision components, avoiding all physical shock and vibration. This applies to
failed drives as well as replacement spares.
●If a drive must be mailed, place the drive in a bubble-pack mailer or other suitable protective packaging and
label the package “Fragile: Handle With Care.”
●Do not remove hard drives from the shipping package for storage. Keep hard drives in their protective
packaging until they are actually mounted in the computer.
●Avoid dropping drives from any height onto any surface.
●If you are inserting or removing a hard drive, turn o the computer. Do not remove a hard drive while the
computer is on or in standby mode.
●Before handling a drive, ensure that you are discharged of static electricity. While handling a drive, avoid
touching the connector.
●Do not use excessive force when inserting a drive.
●Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic elds such
as monitors or speakers.
Lithium coin cell battery
The battery that comes with the computer provides power to the real-time clock and has a minimum lifetime of
about three years.
See the appropriate removal and replacement chapter for the chassis you are working on in this guide for
instructions on the replacement procedures.
WARNING! This computer contains a lithium battery. There is a risk of re and chemical burn if the battery is
handled improperly. Do not disassemble, crush, puncture, short external contacts, dispose in water or re, or
expose it to temperatures higher than 140ºF (60ºC). Do not attempt to recharge the battery.
NOTE: Batteries, battery packs, and accumulators should not be disposed of together with the general
household waste. In order to forward them to recycling or proper disposal, please use the public collection
system or return them to HP, their authorized partners, or their agents.
SATA hard drives
Serial ATA Hard Drive Characteristics
Number of pins/conductors in data cable 7/7
Number of pins in power cable 15
SATA hard drives 17
Serial ATA Hard Drive Characteristics
Maximum data cable length 39.37 in (100 cm)
Data interface voltage dierential 400-700 mV
Drive voltages 3.3 V, 5 V, 12 V
Jumpers for conguring drive N/A
Data transfer rate 6.0 Gb/s
SATA hard drive cables
SATA data cable
Always use an HP approved SATA 6.0 Gb/s cable as it is fully backwards compatible with the SATA 1.5 Gb/s drives.
Current HP desktop products ship with SATA 6.0 Gb/s hard drives.
SATA data cables are susceptible to damage if overexed. Never crease a SATA data cable and never bend it
tighter than a 30 mm (1.18 in) radius.
The SATA data cable is a thin, 7-pin cable designed to transmit data for only a single drive.
SMART ATA drives
The Self Monitoring Analysis and Recording Technology (SMART) ATA drives for the HP Personal Computers have
built-in drive failure prediction that warns the user or network administrator of an impending failure or crash of
the hard drive. The SMART drive tracks fault prediction and failure indication parameters such as reallocated
sector count, spin retry count, and calibration retry count. If the drive determines that a failure is imminent, it
generates a fault alert.
18 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation
Cable management
Always follow good cable management practices when working inside the computer.
●Keep cables away from major heat sources like the heat sink.
●Do not jam cables on top of expansion cards or memory modules. Printed circuit cards like these are not
designed to take excessive pressure on them.
●Keep cables clear of sliding or moveable parts to prevent them from being cut or crimped when the parts
are moved.
●When folding a at ribbon cable, never fold to a sharp crease. Sharp creases may damage the wires.
●Some at ribbon cables come prefolded. Never change the folds on these cables.
●Do not bend any cable sharply. A sharp bend can break the internal wires.
●Never bend a SATA data cable tighter than a 30 mm (1.18 in) radius.
●Never crease a SATA data cable.
●Do not rely on components like the drive cage, power supply, or computer cover to push cables down into
the chassis. Always position the cables to lay properly by themselves.
Cable management 19
4 Removal and replacement procedures –
desktop mini (DM) chassis
Adherence to the procedures and precautions described in this chapter is essential for proper service. After
completing all necessary removal and replacement procedures, run the Diagnostics utility to verify that all
components operate properly.
NOTE: Not all features listed in this guide are available on all computers.
NOTE: HP continually improves and changes product parts. For complete and current information on
supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then follow
the on-screen instructions.
Preparation for disassembly
See Routine care, SATA drive guidelines, and disassembly preparation on page 12 for initial safety procedures.
1. Remove/disengage any security devices that prohibit opening the computer.
2. Remove all removable media, such as a USB ash drive, from the computer.
3. Turn o the computer properly through the operating system, then turn o any external devices.
CAUTION: Turn o the computer before disconnecting any cables.
Regardless of the power-on state, voltage is always present on the system board as long as the system is
plugged into an active AC outlet. In some systems the cooling fan is on even when the computer is in the
“Standby,” or “Suspend” modes. The power cord should always be disconnected before servicing a unit.
4. Disconnect the power cord from the power outlet and disconnect any external devices.
5. If the computer is on a stand, remove the computer from the stand.
WARNING! Beware of sharp edges inside the chassis.
20 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis
Top cover
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Loosen the thumbscrew on the rear of the computer (1).
3. Slide the panel forward and lift if o the computer (2).
NOTE: Your computer model may look slightly dierent from the illustration in this section.
To install the top cover, reverse the removal procedure.
Top cover 21
Front bezel
The front bezel is secured to the top cover by tabs.
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the top cover (Top cover on page 21).
3. Position the top cover upside-down so you can access the inside of the bezel.
4. Pull down to loose the bottom, interior on the bezel (1).
5. Disengage the tabs on the top, interior of the bezel (2).
6. Remove the bezel from the top cover.
To install the front bezel, reverse the removal procedure.
22 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis
Hard drive
Description
Hard drives
2 TB, 5400 rpm, hard drive, 2.5-inch
1 TB, 7200 rpm, hard drive, 2.5-inch
1 TB, 7200 rpm, hard drive, 2.5-inch, SSHD (hybrid SSD)
500 GB, 7200 rpm hard drive, 2.5-inch
500 GB, 2.5-inch, SSHD (hybrid SSD)
500 GB, 7200 rpm hard drive, 2.5-inch, OPAL 2, SED
500 GB, 5400 rpm hard drive, 2.5-inch, FIPS
Solid-state drives
512 GB solid-state drive (SSD), 3D, NAND
256 GB solid-state drive (SSD), OPAL 2, self-encrypting (SED)
256 GB solid-state drive (SSD)
256 GB solid-state drive (SSD), 3D, NAND
180 GB solid-state drive (SSD), SATA 6.0, MLC
180 GB solid-state drive (SSD)
128 GB solid-state drive (SSD)
128 GB solid-state drive (SSD), OPAL 2, Self-encrypting Drive (SED), SATA 6.0
128 GB solid-state drive (SSD), 3D, NAND
120 GB solid-state drive (SSD), SATA 6.0, MLC
120 GB solid-state drive (SSD)
NOTE: Before you remove the old hard drive, be sure to back up the data from the old hard drive so that you
can transfer the data to the new hard drive.
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the top cover Top cover on page 21.
3. Pull the green tab (1) to disconnect the HDD power and data cable from the HDD.
Hard drive 23
4. Pull the release lever next to the rear of the HDD away from the HDD (2). While pulling the release lever
out, slide the drive back until it stops, then lift the HDD up and out of the cage (3).
5. To install a HDD, you must transfer the silver and blue isolation mounting guide screws from the old HDD to
the new HDD.
6. Align the guide screws with the slots on the chassis drive cage, press the HDD down into the cage, then
slide it forward until it stops and locks in place (1).
24 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis
7. Connect the HDD power and data cable (2) to the HDD.
Reverse this procedure to replace the hard drive.
Hard drive 25
Secondary fan (EliteDesk 800 and MP9 models only)
HP EliteDesk 800 G2 and HP MP9 G2 Retail System models include a secondary fan installed under the hard
drive.
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the top cover (Top cover on page 21).
3. Remove the hard drive (Hard drive on page 23).
4. Disconnect the fan plug from the system board (1).
5. Remove the two screws securing the secondary fan (2).
6. Lift the fan out of the chassis (3).
To install the secondary fan, reverse the removal procedure.
26 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis
Drive cage
The drive cage is located next to the heat sink. The drive cage is secured with three Phillips screws.
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the top cover (Top cover on page 21).
3. Remove the hard drive (Hard drive on page 23).
4. Remove the three screws securing the HDD cage to the chassis (1).
5. Pull the hood sensor up and o the HDD cage (2).
6. Lift the HDD cage out of the chassis (3).
To install the drive cage, reverse the removal procedure.
Drive cage 27
M.2 PCIe solid state drive (SSD)
Description
256 GB solid-state drive (SSD), PCIe, 2280, NVMe
256 GB solid-state drive (SSD), PCIe, 2280SS
128 GB solid-state drive (SSD), PCIe, 2280, NVMe
128 GB solid-state drive (SSD), PCIe, 2280SS
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the top cover Top cover on page 21.
3. Remove the hard drive (Hard drive on page 23).
4. If your model is an EliteDesk 800 or MP9, remove the secondary fan (Secondary fan (EliteDesk 800 and
MP9 models only) on page 26).
5. Remove the hard drive cage (Drive cage on page 27).
6. Locate the SSD on the system board.
7. Remove the screw securing the SSD to the system board.
8. Grasp the SSD by the sides and carefully pull it out of the socket.
9. Insert the new SSD into the socket on the system board.
NOTE: An SSD can be installed in only one way.
10. Press the SSD connectors rmly into the socket.
28 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis
11. Press the SSD down to the system board and use the included screw to secure the SSD.
M.2 PCIe solid state drive (SSD) 29
WLAN module
Description
Intel Dual Band Wireless-AC 7265 NV
Intel Dual Band Wireless-AC 8260 + Bluetooth 4.0
Intel Dual Band Wireless-AC 3165 + Bluetooth 4.0
HP WLAN 802.11 a/b/g/n + Bluetooth 4.0
The WLAN module is secured with one Phillips screw and has two connected antennas. It is located under the
hard drive.
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the top cover (Top cover on page 21).
3. Remove the hard drive (Hard drive on page 23).
4. If your model is an EliteDesk 800 or MP9, remove the secondary fan (Secondary fan (EliteDesk 800 and
MP9 models only) on page 26).
5. Remove the drive cage (Drive cage on page 27).
6. Locate the WLAN module on the system board.
7. Disconnect both antenna cables from the WLAN module.
NOTE: You may need to use a small tool, such as tweezers or needle-nose pliers, to disconnect and
connect the antenna cables.
8. Grasp the WLAN module by the sides and pull it out of the socket.
9. Insert the new WLAN module into the socket on the system board.
NOTE: A WLAN module can be installed in only one way.
10. Press the WLAN connectors rmly into the socket (1).
11. Press the WLAN module down to the system board and use the included screw to secure the module (2).
30 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis
12. Attach the internal antenna to the antenna connectors (3) on the WLAN module.
To install the WLAN module, reverse the removal procedure.
NOTE: WLAN modules are designed with a notch to prevent incorrect insertion.
WLAN module 31
External antenna
The antennas route from the WLAN module to the cable connectors on the rear of the computer.
To install the antennas:
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the top cover (Top cover on page 21).
3. Remove the hard drive (Hard drive on page 23).
4. If your model is an EliteDesk 800 or MP9, remove the secondary fan (Secondary fan (EliteDesk 800 and
MP9 models only) on page 26).
5. Remove the drive cage (Drive cage on page 27).
6. Locate the WLAN module on the system board.
7. Disconnect the internal antennae from the WLAN module.
For instructions, see WLAN module on page 30.
8. Locate both external antenna positions on the rear panel.
32 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis
9. Insert a Phillips screwdriver in each knock-out feature and rotate to remove the blank.
10. Feed the external antenna cable through each hole and screw the antenna into position.
11. Connect the external antenna cables to the WLAN module.
Reverse the removal procedure to install the WLAN antennas and transceivers.
External antenna 33
RTC battery
The battery that comes with the computer provides power to the real-time clock. When replacing the battery,
use a battery equivalent to the battery originally installed in the computer. The computer comes with a 3-volt
lithium coin cell battery.
WARNING! The computer contains an internal lithium manganese dioxide battery. There is a risk of re and
burns if the battery is not handled properly. To reduce the risk of personal injury:
Do not attempt to recharge the battery.
Do not expose to temperatures higher than 60°C (140ºF).
Do not disassemble, crush, puncture, short external contacts, or dispose of in re or water.
Replace the battery only with the HP spare designated for this product.
CAUTION: Before replacing the battery, it is important to back up the computer CMOS settings. When the
battery is removed or replaced, the CMOS settings will be cleared.
Static electricity can damage the electronic components of the computer or optional equipment. Before
beginning these procedures, ensure that you are discharged of static electricity by briey touching a grounded
metal object.
NOTE: The lifetime of the lithium battery can be extended by plugging the computer into a live AC wall socket.
The lithium battery is only used when the computer is NOT connected to AC power.
HP encourages customers to recycle used electronic hardware, HP original print cartridges, and rechargeable
batteries. For more information about recycling programs, go to http://www.hp.com/recycle.
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the top cover (Top cover on page 21).
3. Remove the hard drive (Hard drive on page 23).
4. If your model is an EliteDesk 800 or MP9, remove the secondary fan (Secondary fan (EliteDesk 800 and
MP9 models only) on page 26).
5. Remove the hard drive cage (Drive cage on page 27).
34 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis
6. Locate the battery and battery holder on the system board.
NOTE: You may need to use a small tool, such as tweezers or needle-nose pliers, to remove and replace
the battery.
7. Lift the battery out of the holder.
8. Slide the replacement battery into position, positive side up. The battery holder automatically secures the
battery in the proper position.
RTC battery 35
Thermal sensor
A thermal sensor installs at the front of the computer near the speaker. Adhesive secures the sensor to the
chassis that houses the speaker.
To remove the thermal sensor:
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the top cover (Top cover on page 21).
3. Remove the hard drive (Hard drive on page 23).
4. If your model is an EliteDesk 800 or MP9, remove the secondary fan (Secondary fan (EliteDesk 800 and
MP9 models only) on page 26).
5. Remove the drive cage (Drive cage on page 27).
6. Disconnect the thermal module from the system board (1).
7. Pull to disengage the sensor to the computer chassis (2). The sensor is secured to the chassis with
adhesive.
To install the thermal sensor, reverse the removal procedures.
36 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis
Fan
The fan sits between the fan sink and the front of the computer.
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the top cover (Top cover on page 21).
3. Lift the tab on the outer edge of the fan and rotate the fan upward.
4. Disconnect the fan plug from the system board, and then lift the fan out of the chassis.
To install the fan, reverse the removal procedure.
Fan 37
Power switch/light cover
The power switch/light cover is located at the front, right of the computer, under the top cover.
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the top cover (Top cover on page 21).
3. Remove the fan (Fan on page 37).
4. Rotate the top of the cover away from the computer and lift it o the system board.
To install the power switch/light cover, reverse the removal procedure.
38 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis
Memory
Description
Memory modules (PC3-12800, 1600-MHz)(for use in EliteDesk 705 models)
8-GB
4-GB
Memory modules (PC4-17000, 2133-MHz)(for use in EliteDesk 800, ProDesk 600, ProDesk 400, and HP MP9 G2 Retail System models)
16-GB
8-GB
4-GB
The computer comes with small outline, dual inline memory modules (SODIMMs).
SODIMMs
The memory sockets on the system board can be populated with up to two industry-standard SODIMMs. These
memory sockets are populated with at least one preinstalled SODIMM. To achieve the maximum memory
support, you can populate the system board with up to 32 GB (EliteDesk 800, ProDesk 600, and HP MP9) or 16
GB (EliteDesk 705 and ProDesk 400) of memory.
SODIMM specications
For proper system operation, the SODIMMs must meet the following qualications:
EliteDesk 800, ProDesk 600, HP MP9 EliteDesk 705 ProDesk 400
SODIMM 1.2 volt DDR4-SDRAM DIMMs 1.5 volt DDR3-SDRAM DIMMs or 1.35
volt DDR3L-SDRAM (Low Power)
DIMMs
1.2 volt DDR4-SDRAM DIMMs
Compliance unbuered non-ECC PC4-17000
DDR4-2133 MHz-compliant
unbuered non-ECC PC3-12800
DDR3/DDR3L-1600 MHz-compliant
unbuered non-ECC PC4-17000
DDR4-2133 MHz-compliant
Pins industry-standard 288-pin containing
the mandatory Joint Electronic Device
Engineering Council (JEDEC)
specication
industry-standard 240-pin containing
the mandatory Joint Electronic Device
Engineering Council (JEDEC)
specication
industry-standard 288-pin containing
the mandatory Joint Electronic Device
Engineering Council (JEDEC)
specication
Support support CAS latency 15 DDR4 2133
MHz (15-15-15 timing)
support CAS latency 11 DDR3/DDR3L
1600 MHz (11-11-11 timing)
support CAS latency 15 DDR4 2133
MHz (15-15-15 timing)
Slots 222
Maximum
Memory
32 GB 16 GB 32 GB
Supported 512 Mbit, 1 Gbit, and 2 Gbit non-ECC memory technologies single-sided and double-sided DIMMs
Note The system will not operate properly if you install unsupported DIMM memory. DIMMs constructed with x8 and x16
DDR devices are supported; DIMMs constructed with x4 SDRAM are not supported.
Memory 39
HP oers upgrade memory for this computer and advises that the consumer purchase it to avoid compatibility
issues with unsupported third-party memory.
Populating SODIMM sockets
There are two SODIMM sockets on the system board, with one socket per channel. The sockets are labeled
DIMM1 and DIMM3. The DIMM1 socket operates in memory channel B. The DIMM3 socket operates in memory
channel A.
Item Description System Board Label Socket Color
1 SODIMM1 socket, Channel B DIMM1 Black
2 SODIMM3 socket, Channel A DIMM3 Black
The system will automatically operate in single channel mode, dual channel mode, or ex mode, depending on
how the SODIMMs are installed.
●The system will operate in single channel mode if the SODIMM sockets are populated in one channel only.
●The system will operate in a higher-performing dual channel mode if the memory capacity of the SODIMM
in Channel A is equal to the memory capacity of the SODIMM in Channel B.
●The system will operate in ex mode if the memory capacity of the SODIMM in Channel A is not equal to the
memory capacity of the SODIMM in Channel B. In ex mode, the channel populated with the least amount
of memory describes the total amount of memory assigned to dual channel and the remainder is assigned
to single channel. If one channel will have more memory than the other, the larger amount should be
assigned to channel A.
●In any mode, the maximum operational speed is determined by the slowest SODIMM in the system.
40 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis
Replacing SODIMMs
CAUTION: You must disconnect the power cord and wait approximately 30 seconds for the power to drain
before adding or removing memory modules. Regardless of the power-on state, voltage is always supplied to
the memory modules as long as the computer is plugged into an active AC outlet. Adding or removing memory
modules while voltage is present may cause irreparable damage to the memory modules or system board.
The memory module sockets have gold-plated metal contacts. When upgrading the memory, it is important to
use memory modules with gold-plated metal contacts to prevent corrosion and/or oxidation resulting from
having incompatible metals in contact with each other.
Static electricity can damage the electronic components of the computer or optional cards. Before beginning
these procedures, ensure that you are discharged of static electricity by briey touching a grounded metal
object.
When handling a memory module, be careful not to touch any of the contacts. Doing so may damage the
module.
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the top cover (Top cover on page 21).
3. Remove the fan (Fan on page 37).
4. Locate the memory modules on the system board.
Item Description System Board Label Socket Color
1 SODIMM1 socket, Channel B DIMM1 Black
2 SODIMM3 socket, Channel A DIMM3 Black
Memory 41
5. To remove a SODIMM, press outward on the two latches on each side of the SODIMM (1) then pull the
SODIMM out of the socket (2).
6. Slide the new SODIMM into the socket at approximately a 30° angle (1) then press the SODIMM down (2) so
that the latches lock it in place.
NOTE: A memory module can be installed in only one way. Match the notch on the module with the tab
on the memory socket.
The computer automatically recognizes the additional memory when you turn on the computer.
42 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis
Heat sink
The heat sink is secured with four captive Torx screws.
order indicated on the heat sink.
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the top cover (Top cover on page 21).
3. Remove the fan (Fan on page 37).
4. In the order indicated on the heat sink, loosen the three captive Torx screws, and then lift the heat sink out
of the computer.
CAUTION: Be sure the loosen the screws in the order indicated by the numbers stamped on the heat sink.
CAUTION: To reduce a degradation in thermal performance, be sure not to touch the thermal grease on
the surface of the processor or the heat sink.
To replace the heat sink, reverse the removal procedures.
When replacing the heat sink, be sure to install thermal pads as shown in the following image:
Heat sink 43
44 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis
Processor – Intel models
Description
Intel Core i7-6700
Intel Core i7-6700T
Intel Core i5-6600
Intel Core i5-6600T
Intel Core i5-6500
Intel Core i7-6500T
Intel Core i3-6320
Intel Core i3-6300T
Intel Core i3-6100T
Intel Pentium G4500T
Intel Pentium G4400T
Intel Pentium G4400TE (MP9 G2 models only)
Intel Celeron G3900T
Intel Pentium G3900TE (MP9 G2 models only)
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the top cover (Top cover on page 21).
3. Remove the fan (Fan on page 37).
4. Remove the heat sink (Heat sink on page 43).
5. Rotate the locking lever to its full open position (1).
6. Raise and rotate the microprocessor retainer to its fully open position (2).
Processor – Intel models 45
7. Lift the processor (3) straight up and remove it.
CAUTION: Do NOT handle the pins in the processor socket. These pins are very fragile and handling them
could cause irreparable damage. Once pins are damaged it may be necessary to replace the system board.
The heat sink must be installed within 24 hours of installing the processor to prevent damage to the
processor’s solder connections.
Reverse the removal procedure to install a new processor.
NOTE: After installing a new processor onto the system board, update the system ROM to ensure that the
latest version of the BIOS is being used on the computer. The latest system BIOS can be found on the Web at:
http://h18000.www1.hp.com/support/les.
46 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis
Speaker
A single speaker is located on the left side of the computer behind the front bezel, inside the chassis. It is
secured by a white peg that you pull out to release.
To remove the speaker:
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the top cover (Top cover on page 21).
3. Remove the hard drive (Hard drive on page 23).
4. Remove the hard drive cage (Drive cage on page 27).
5. Disconnect the speaker cable from the system board connector (1).
6. From the front of the computer, pull to remove the white peg that secures the speaker (2).
7. Lift to remove the speaker from the computer (3).
To install the speaker, reverse the removal procedures.
Speaker 47
Expansion connector board
Description
HDMI expansion connector board
Serial port expansion connector board
DisplayPort expansion connector board
An expansion board can be installed near the back of the system board that provides an additional connector on
the rear I/O panel. The board is secured with two screws and connects to the a connector on the system board.
To remove the expansion connector board:
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the top cover (Top cover on page 21).
3. Remove the heat sink (Heat sink on page 43).
4. Remove the fan (Fan on page 37).
5. Remove the two Phillips screws that secure the board to the system board.
6. Lift to disengage the board from the system board connector, and then remove the expansion connector
board from the computer.
To install the expansion connector board, reverse the removal procedures.
48 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis
System board
NOTE: All system board spare part kits include replacement thermal material.
NOTE: System board appearance may vary.
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the top cover (Top cover on page 21).
3. Remove the hard drive (Hard drive on page 23).
4. If your model is an EliteDesk 800 or MP9, remove the secondary fan (Secondary fan (EliteDesk 800 and
MP9 models only) on page 26).
5. Remove the drive cage (Drive cage on page 27).
6. Remove the fan (Fan on page 37).
7. Remove the heat sink (Heat sink on page 43).
8. Remove the power light cover (Power switch/light cover on page 38).
9. Remove the solid-state drive (M.2 PCIe solid state drive (SSD) on page 28).
10. Remove the WLAN module (WLAN module on page 30).
11. Remove the memory modules (Memory on page 39).
12. Remove the expansion connector board (Expansion connector board on page 48).
13. Remove the thermal sensor (Thermal sensor on page 36).
14. Disconnect all cables from the system board, noting their location for reinstallation.
15. Remove the four Torx screws that secure the system board to the computer.
16. Slide the system board out of the computer.
System board 49
To install the system board, reverse the removal procedures.
NOTE: When replacing the system board, you must change the chassis serial number in the BIOS.
Updating SMBIOS Information
When replacing the system board, you must reprogram the SMBIOS information on the aected computer.
Failure to reprogram the board will result in eventual failure, such as an activation failure (need to reactivate the
system) or a system recovery failure.
To update SMBIOS information in Computer Setup:
1. Turn on or restart the computer.
2. Press Esc while the “Press the ESC key for Startup Menu” message is displayed at the bottom of the screen.
NOTE: If you do not press Esc at the appropriate time, you must restart the computer and again press Esc
when the monitor light turns green to access the utility.
3. Press F10 to enter Computer Setup.
4. Go to Main > Set Machine Unique Data.
5. If necessary, press Ctrl+A to initiate edit mode.
6. Edit the elds listed. If the feature byte has data or is not editable, then it was not cleared and cannot be
edited.
System ID Setup Page
Setup Field Name Comment Label
Product Name Enter the Model name/number or marketing
name.
Flexbuild
Serial Number Enter the Serial Number of Unit. Support
SKU Number Enter the SKU or Product Number including
Localization Code.
Support
Asset Tag Enter the 18-byte identier assigned to the
computer.
Support
Feature Byte Enter the Feature Byte string. The feature
byte string is case sensitive.
The label includes spaces after every four
characters. You can enter or ignore these
spaces – their only purpose is to help with
data entry. There is a character limitation of
40 bytes per line. When you reach this limit,
go
If you make an error during data entry, the
data will not validate, and the computer
asks you to correct your data input.
Flexbuild
Build ID The Build ID of the unit. Flexbuild
50 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis
System board callouts, EliteDesk 800, ProDesk 600, and HP MP9 Retail System
Sys Bd Label Color Component Sys Bd Label Color Component
SPKR White Speaker connector HDD_FAN White Secondary hard drive
HSENSE White Hood sensor connector SATA Blue Hard drive data
connector
THERM White Thermal sensor COMM_DP White Expansion board
connector
SSD Black Solid-state module
socket
XU1 Black Processor socket
WLAN Black WLAN module socket DIMM3 Black Secondary memory
socket
BAT Black RTC battery DIMM1 Black Primary memory socket
PSWD Black/blue Password header and
jumper
CPUFAN White Fan connector
CMOS Yellow CMOS reset button
System board 51
System board callouts, EliteDesk 705
Sys Bd Label Color Component Sys Bd Label Color Component
SPKR White Speaker connector PSWD Black/blue Password header and
jumper
HSENSE White Hood sensor connector CMOS Yellow CMOS reset button
THERM White Thermal sensor SATA Blue Hard drive data
connector
SSD Black Solid-state module
socket
DIMM3 Black Secondary memory
socket
WLAN Black WLAN module socket DIMM1 Black Primary memory socket
BAT Black RTC battery CPU FAN White Fan connector
52 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis
System board callouts, ProDesk 400
Sys Bd Label Color Component Sys Bd Label Color Component
DIMM3 Black Secondary memory
socket
WLAN Black WLAN module socket
DIMM1 Black Primary memory socket BAT Black RTC battery
CPUFAN White Fan connector PSWD Black/blue Password header and
jumper
SPKR White Speaker connector CMOS Yellow CMOS reset button
HSENSE White Hood sensor connector SATA0 Blue Hard drive data
connector
THERM White Thermal sensor PROCESSOR Black Processor socket
SSD Black Solid-state module
socket
System board 53
Internal WLAN antenna cable removal/installation
The antennas route from the WLAN module to the cable connectors on the front and the rear of the computer.
To install the antennas:
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the top cover (Top cover on page 21).
3. Remove the hard drive (Hard drive on page 23).
4. If your model is an EliteDesk 800 or MP9, remove the secondary fan (Secondary fan (EliteDesk 800 and
MP9 models only) on page 26).
5. Remove the drive cage (Drive cage on page 27).
6. Remove the fan (Fan on page 37).
7. Remove the heat sink (Heat sink on page 43).
8. Remove the power switch/light cover (Power switch/light cover on page 38).
9. If applicable, remove the expansion connector board (Expansion connector board on page 48).
10. Remove the thermal sensor (Thermal sensor on page 36).
11. Disconnect the antenna cables from the WLAN module (WLAN module on page 30).
12. Remove the system board (System board on page 49).
13. Remove the antenna cables from their routing paths underneath the keyboard. Note the locations the
cables are taped to the chassis as shown in the following image.
54 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis
14. On the rear of the computer, remove the antenna cover by pressing on the tab on the top of the cover (1),
and then rotating the cover o the computer (2).
15. Antenna transceivers are connected to the front and back of the computer as shown in the following
image.
16. Remove the front transceiver from the inside of the computer by pressing the tab to disengage the
transceiver and removing the transceiver (arrow in following image points to the tabs on the inside of the
computer).
Internal WLAN antenna cable removal/installation 55
17. Remove the rear transceiver from the inside of the computer by pressing the tab to disengage the
transceiver and removing the transceiver (arrow in following image points to the tabs on the inside of the
computer).
Reverse the removal procedure to install the WLAN antennas and transceivers.
56 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis
Changing from desktop to tower conguration
The computer can be used in a tower orientation with an optional tower stand that can be purchased from HP.
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Orient the computer so that its right side is facing up and place the computer in the optional stand.
NOTE: To stabilize the computer in a tower orientation, HP recommends the use of the optional tower
stand.
3. Reconnect the AC power cord and any external devices, then turn on the computer.
NOTE: Ensure at least 10.2 centimeters (4 inches) of space on all sides of the computer remains clear and
free of obstructions.
4. Lock any security devices that were disengaged when the top cover was removed.
Changing from desktop to tower conguration 57
5 Computer Setup (F10) Utility
Computer Setup (F10) Utilities
Use Computer Setup (F10) Utility to do the following:
●Change settings from the defaults or restore the settings to default values.
●View the system conguration, including settings for processor, graphics, memory, audio, storage,
communications, and input devices.
●Modify the boot order of bootable devices such as hard drives, optical drives, or USB ash media devices.
●(Windows 7 only) Establish an Ownership Tag, the text of which is displayed each time the system is turned
on or restarted.
●Enter the Asset Tag or property identication number assigned by the company to this computer.
●Enable the power-on password prompt during system restarts (warm boots) as well as during power-on.
●Establish an administrator password that controls access to the Computer Setup (F10) Utility and the
settings described in this section.
●Establish minimum requirements for valid passwords, including length and required types of characters.
●Secure integrated I/O functionality, including the serial, USB, or audio, or embedded NIC, so that they
cannot be used until they are unsecured.
●Enable or disable dierent types of boot sources.
●Congure features such as Secure Boot, power management, virtualization support, and language and
keyboard type used in Setup and POST.
●Replicate the system setup by saving system conguration information on a USB device and restoring it on
one or more computers.
●Enable or disable DriveLock security or securely erase a hard drive (when supported by drive).
Using Computer Setup (F10) Utilities
Computer Setup can be accessed only by turning the computer on or restarting the system. To access the
Computer Setup Utilities menu, complete the following steps:
1. Turn on or restart the computer.
2. Repeatedly press F10 when the monitor light turns green to access the utility.
You can also press Esc to a menu that allows you to access dierent options available at startup, including
the Computer Setup utility.
NOTE: If you do not press F10 at the appropriate time, you must restart the computer and again
repeatedly press F10 when the monitor light turns green to access the utility.
3. A choice of four headings appears in the Computer Setup Utilities menu: Main, Security, Advanced, and UEFI
Drivers.
NOTE: Selecting UEFI Drivers restarts the computer into the 3rd party option ROM management
application. You can access this application directly by pressing F3 during startup.
58 Chapter 5 Computer Setup (F10) Utility
4. Use the arrow (left and right) keys to select the appropriate heading. Use the arrow (up and down) keys to
select the option you want, then press Enter. To return to the Computer Setup Utilities menu, press Esc.
5. To apply and save changes, select Main > Save Changes and Exit.
●If you have made changes that you do not want applied, select Ignore Changes and Exit.
●To restore settings from the Advanced and Main menus to original values, select Apply Factory
Defaults and Exit.
●To restore settings from the Advanced and Main menus to those previously saved by Save Custom
Defaults, select Apply Custom Defaults and Exit. If no custom defaults have been saved, then factory
defaults are used.
NOTE: Settings in the Security menu are not modied by Apply Defaults. Those values are reset by
Restore Security Settings to Factory Defaults at the bottom of the Security menu.
NOTE: Not all settings shown in the following sections are available for all models
CAUTION: Do NOT turn the computer power OFF while the BIOS is saving the Computer Setup (F10) changes
because the settings could become corrupted. It is safe to turn o the computer only after exiting the F10 Setup
screen.
Computer Setup (F10) Utilities 59
Computer Setup–Main
NOTE: Support for specic Computer Setup options may vary depending on the hardware conguration.
Table 5-1 Computer Setup—Main
Option Description
System Information Lists all information in following list if Advanced System Information is selected. Lists smaller subset if Basic
System Information is selected.
●Product name
●Installed memory size
●Processor type
●Processor cache size (L1/L2/L3)
●Processor speed
●MicroCode Revision
●Processor Stepping
●DIMM size (for each installed module)
●System BIOS version
●ME Firmware version (Intel only)
●Video BIOS version
●Super I/O Firmware version
●Born On Date
●Serial Number
●SKU number
●UUID (Universally Unique Identier)
●Asset Tracking Number
●Feature Byte
●Build ID
●Product Family
●System Board ID
●System Board CT
●Integrated MAC Address
System Diagnostics If the hard drive has the HP Advanced Diagnostics installed, the application will launch. If HP Advanced
Diagnostics is not installed, then a basic version built into the BIOS will provide the capability to perform the
following functions:
●Memory Test
●Hard Drive Check
●Language
Update System BIOS Lets you update the system BIOS from www.hp.com or another network server, from a removable USB drive,
or from a le located on the hard drive.
●‘Check HP.com for BIOS Updates’ or ‘Check the Network for BIOS Updates’
The string that appears here depends on the setting in ‘BIOS Update Preferences’.
60 Chapter 5 Computer Setup (F10) Utility
Table 5-1 Computer Setup—Main (continued)
Option Description
●Lock BIOS Version
If this option is checked, the system is locked to the current BIOS version and updates are not allowed.
●BIOS Update Preferences
Allows the administrator to select the source of network updates (www.hp.com or another network
server) and allows conguration of a periodic check for updates, including policies for:
■Check for updates and prompt the user to accept or reject the update at that time
■Check for updates and install all new versions
■Check for updates and install only new versions marked important
●Network Conguration Settings
●Update BIOS Using Local Media
Lets you access les on either USB storage or the hard drive. The HP BIOS Update and Recovery
application included in BIOS Softpaqs at www.hp.com will copy the BIOS le to the correct location on
the hard drive or USB device.
System IDs Lets you set the following values:
●Asset Tracking Number
●Ownership Tag
Replicated Setup Backup current settings to USB device
Saves system conguration to a formatted USB ash media device.
Restore current settings from USB device
Restores system conguration from a USB ash media device.
Save Custom Defaults Saves the current system conguration settings as the custom default set.
Apply Custom Defaults
and Exit
Applies the custom default settings to the computer after rebooting. Does not apply to options in the
Security menu.
Apply Factory Defaults and
Exit
Restores the factory system conguration settings to the computer after rebooting. Does not apply to
options in the Security menu.
Ignore Changes and Exit Exits Computer Setup without applying or saving any changes.
Save Changes and Exit Saves changes to current system conguration, exits Computer Setup, and reboots.
Computer Setup (F10) Utilities 61
Computer Setup—Security
NOTE: Support for specic Computer Setup options may vary depending on the hardware conguration.
Table 5-2 Computer Setup—Security
Option Description
Set up BIOS Administrator
Password
Lets you set and enable a BIOS administrator password, which includes the following privileges:
●Manage other BIOS users
●Full access to BIOS policy and settings
●Unlock the computer when other BIOS users fail the preboot authentication.
NOTE: Creating a BIOS user disables the Fast Boot option.
NOTE: If the password is set, it is required to change Computer Setup options, update the BIOS, and make
changes to certain plug and play settings under Windows.
Change BIOS Administrator
Password
(This selection is active
only if a BIOS
administrator password is
set.)
Lets you change the BIOS administrator password.
You must know the current password to be able to change it.
Password Policies Let you set the guidelines for a valid password. Options include:
●Password minimum length
●Requires at least one symbol
●Requires at least one number
●Requires at least one upper case character
●Requires at least one lower case character
●Allow spaces
Clear Password Jumper
Select ‘Honor’ to allow or ‘Ignore’ to not allow the absence of the password jumper to clear the passwords at
boot up. Default is ‘Honor’.
Security Conguration TPM Embedded Security
●TPM Device
Lets you set the Trusted Platform Module as available or hidden.
●TPM State
Select to enable the TPM.
●TPM Clear
Select to reset the TPM to an unowned state. After the TPM is cleared, it is also turned o. To
temporarily suspend TPM operations, turn the TPM o instead of clearing it.
CAUTION: Clearing the TPM resets it to factory defaults and turns it o. You will lose all created keys
and data protected by those keys.
BIOS Sure Start
●Verify Boot Block on every Boot
Select to check validity of boot block region each boot. If not selected, boot block region will be
validated on power cycles.
62 Chapter 5 Computer Setup (F10) Utility
Table 5-2 Computer Setup—Security (continued)
Option Description
●Data Recovery Policy
Select ‘Automatic’ or ‘Manual’ to set data recovery policy. ‘Manual’ lets you select whether or not to
execute recovery of a corrupted region if it is detected.
Set Up BIOS Power-On
Password
Lets you set and enable a BIOS power-on password. The power-on password prompt appears after a power
cycle or reboot. If the user does not enter the correct power-on password, the unit will not boot.
Change BIOS Power-On
Password
(This selection is active
only if a BIOS power-on
password is set.)
Lets you change the BIOS power-on password.
You must know the current password to be able to change it.
DriveLock Allows you to assign or modify a master or user password for hard drives. When this feature is enabled, the
user is prompted to provide one of the DriveLock passwords during POST. If neither is successfully entered,
the hard drive will remain inaccessible until one of the passwords is successfully provided during a
subsequent cold-boot sequence.
NOTE: This selection will only appear when at least one drive that supports the DriveLock feature is
attached to the system.
CAUTION: Be aware that these settings take place immediately. A save is not necessary.
CAUTION: Be sure to document the DriveLock password. Losing a DriveLock password will render a drive
permanently locked.
After you select a drive, the following options are available:
Set DriveLock Master Password. Sets the drive’s master password but does not enable DriveLock.
Enable DriveLock. Sets the drive’s user password and enables DriveLock.
Secure Erase Lets you select a hard drive to completely erase.
Once a hard drive has been erased with a program that utilizes Secure Erase rmware commands, no le
recovery program, partition recovery program, or other data recovery method will be able to extract data
from the drive.
Save/Restore MBR of the
system hard drive
NOTE: Windows 8.1 and Windows 10 systems are generally not formatted to include an MBR. Instead they
use GUID Partition Table (GPT) format, which better supports large hard drives.
Enabling this feature will save the Master Boot Record (MBR) of the system hard drive. If the MBR gets
changed, the user will be prompted to restore the MBR. Default is disabled.
The MBR contains information needed to successfully boot from a disk and to access the data stored on the
disk. Master Boot Record Security may prevent unintentional or malicious changes to the MBR, such as those
caused by some viruses or by the incorrect use of certain disk utilities. It also allows you to recover the "last
known good" MBR, should changes to the MBR be detected when the system is restarted.
NOTE: Most operating systems control access to the MBR of the current bootable disk; the BIOS cannot
prevent changes that may occur while the operating system is running.
Restores the backup Master Boot Record to the current bootable disk. Default is disabled.
Only appears if all of the following conditions are true:
●MBR security is enabled
●A backup copy of the MBR has been previously saved
●The current bootable disk is the same disk from which the backup copy was saved
CAUTION: Restoring a previously saved MBR after a disk utility or operating system has modied the MBR,
may cause the data on the disk to become inaccessible. Only restore a previously saved MBR if you are
condent that the current bootable disk's MBR has been corrupted or infected with a virus.
Computer Setup (F10) Utilities 63
Table 5-2 Computer Setup—Security (continued)
Option Description
Smart Cover Cover Lock (Lock/Unlock)
Default is ‘Unlock’.
Cover Removal Sensor (Disabled/Notify user/Administrator password)
Lets you disable the cover sensor or congure what action is taken if the computer cover was removed.
Default is ‘Disabled’.
NOTE: Notify user alerts the user with a POST error on the rst boot after the sensor detects removal of
the cover. If the password is set, Administrator Password requires that the password be entered to boot the
computer if the sensor detects that the cover has been removed.
System Management
Command
Allows authorized personnel to reset security settings during a service event. Default is enabled.
Restore Security Settings
to Default
This action resets security devices, clears BIOS passwords (not including DriveLock), and restores settings in
the Security menu to factory defaults.
Computer Setup—Advanced
NOTE: Support for specic Computer Setup options may vary depending on the hardware conguration.
Table 5-3 Computer Setup—Advanced (for advanced users)
Option Heading
Display Language Lets you select the language of the menus in F10 Setup and the keyboard layout.
Scheduled Power-On This feature wakes the system up from a powered o state at a specied date and time.
Boot Options Select the devices that the computer can boot from, as well as other options, including:
●Startup Menu Delay(sec). Enabling this feature will add a user-specied delay to the POST process. One
purpose for the delay is to provide additional time to activate hotkeys such as Esc for the Startup Menu
or F10 for Computer Setup.
●Fast Boot. Default is enabled for Windows 8.1 or later, and disabled for Windows 7 systems.
●CD-ROM Boot. Default is enabled.
●Network (PXE) Boot. Default is enabled.
●Prompt on Memory Size Change. Default is enabled.
●Prompt on Fixed Storage Change. Default is disabled.
●After Power Loss. Default is Power O.
■Power o—causes the computer to remain powered o when power is restored.
■Power on—causes the computer to power on automatically as soon as power is restored.
■Previous state—causes the computer to power on automatically as soon as power is restored, if
it was on when power was lost.
NOTE: If the system is congured to ‘Power On from Keyboard Ports’ (see Power Management
Options), then this setting is forced to ‘Power On’.
●Audio Alerts During Boot. Default is enabled. When disabled, most audible beeps from errors, warnings,
and password prompts during boot up are suppressed.
●UEFI Boot Order.
64 Chapter 5 Computer Setup (F10) Utility
Table 5-3 Computer Setup—Advanced (for advanced users) (continued)
Option Heading
Default is enabled. Specify the order in which UEFI boot sources (such as a internal hard drive, USB hard
drive, USB optical drive, or internal optical drive) are checked for a bootable operating system image.
UEFI boot sources always have precedence over legacy boot sources.
●Legacy Boot Order
Specify the order in which legacy boot sources (such as a network interface card, internal hard drive,
USB optical drive, or internal optical drive) are checked for a bootable operating system image.
Specify the order of attached hard drives. The rst hard drive in the order will have priority in the boot
sequence and will be recognized as drive C (if any devices are attached).
NOTE: To drag a device to a preferred place, press Enter.
NOTE: MS-DOS drive lettering assignments may not apply after a non-MS-DOS operating system has
started.
Shortcut to Temporarily Override Boot Order
To boot one time from a device other than the default device specied in Boot Order, restart the computer
and press Esc (to access the Startup menu) and then F9 (Boot Menu), or only F9 (skipping the Startup menu)
when the monitor light turns green. After POST is completed, a list of bootable devices is displayed. Use the
arrow keys to select the preferred bootable device and press Enter. The computer then boots from the
selected non-default device for this one time.
Secure Boot Conguration Congure Legacy Support and Secure Boot
Legacy Support – Lets you turn o all legacy support on the computer, including booting to DOS, running
legacy graphics cards, booting to legacy devices, and so on. Windows 7 for instance requires legacy support,
whereas Windows 8 does not.
Secure Boot – Lets you make sure an operating system is legitimate before booting to it, making Windows
resistant to malicious modication from preboot to full OS booting, preventing rmware attacks. UEFI and
Windows Secure Boot only allow code signed by pre-approved digital certicates to run during the rmware
and OS boot process.
Default is ‘Legacy Support Enable and Secure Boot Disable’ for Windows 7 and other non-Windows
congurations. Default is ‘Legacy Support Disable and Secure Boot Enable’ for Windows 8.1 and later
congurations.
Secure Boot Key Management
Lets you manage the custom key settings.
Clear Secure Boot Keys
Lets you delete any previously loaded custom boot keys. Clearing keys will disable secure boot. Default is
disabled.
Reset Secure Boot keys to factory defaults
Default is disabled.
Enable MS UEFI CA key
Disabling this setting alters the Secure Boot key list to further restrict the allowed software components. Set
this option to ‘disable’ to support Device Guard.
System Options Congure Storage Controller for RAID (enable/disable)
Lets you enable onboard RAID. Default is disabled.
POST Prompt for RAID Conguration (Intel only)
When disabled, the prompt for ‘RAID option ROM’ in legacy mode is suppressed.
SVM CPU Virtualization (AMD only)
Computer Setup (F10) Utilities 65
Table 5-3 Computer Setup—Advanced (for advanced users) (continued)
Option Heading
Controls the virtualization features of the processor. Changing this setting requires turning the computer o
and then back on. Default is disabled.
Virtualization Technology (VTx) (Intel only)
Controls the virtualization features of the processor. Changing this setting requires turning the computer o
and then back on. Default is disabled.
Virtualization Technology for Directed I/O (VTd) (Intel only)
Controls virtualization DMA remapping features of the chipset. Changing this setting requires turning the
computer o and then back on. Default is disabled.
PCI Express Slot x (enable/disable)
Lets you disable individual expansion slots.
Allow PCIe/PCI SERR# Interrupt (enable/disable)
Allows PCI devices to report PCI/PCIe System Error signals, such as address parity errors, data parity errors,
and critical errors other than parity. Default is enabled.
Power Button Override (disable/4 sec/15 sec)
Lets you disable or enable and select the number of seconds you have to hold down the power button for it
to force the system to power o. Default is ‘4 sec’.
Built-In Device Options Embedded LAN Controller
Select to show the device in the operating system. Default is enabled.
Wake On LAN
Lets you either disable the Wake On LAN feature, or congure where the computer boots, including the
network or hard drive. Default is Boot to Network.
Dust Filter
Select to enable the Dust Filter replacement reminder, which can be set for 15, 30, 60, 90, 120, or 180
days. The reminder will show during POST after the reminder timer has expired.
Video Memory Size
Use this option to manage graphics memory allocation. The value you choose is allocated permanently to
graphics and is unavailable to the operating system.
Audio Device
Select to show the device in the operating system. Default is enabled.
Internal Speakers (does not aect external speakers)
Clear to disable the chassis speaker or speakers. This function is applicable to normal audio playback in the
operating system and does not aect the error or warning beeps during POST. Default is enabled.
Integrated Microphone
Clear to disable the integrated microphone. This does not aect devices plugged into audio jacks. Default is
enabled.
Integrated Camera
Clear to disable the integrated webcam. Default is enabled.
Increase Idle Fan Speed(%)
Sets idle fan speed percentage. This setting only changes the minimum fan speed. The fan is still
automatically controlled.
Fingerprint Device
66 Chapter 5 Computer Setup (F10) Utility
Table 5-3 Computer Setup—Advanced (for advanced users) (continued)
Option Heading
Select to show the device in the operating system. Default is enabled.
Touch Panel
Clear to disable the display panel touch feature. Default is enabled.
Port Options Allows you to hide the following ports from the operating system:
●Serial port A
●Serial port B
●SATA0
●SATA1
●SATA2
●SATA3
●SATA5
●Front USB ports
●Rear USB ports
●USB charging port function
●Media card reader
Restrict USB Devices
Specify the following categories of USB devices to enable:
●Allow all USB devices
●Allow only keyboard and mouse
●Allow all but storage devices and hubs.
When some devices are restricted, the system will disable USB ports that do not meet the allowed
criteria. This feature is usually combined with similar policies within the operating system since USB devices
can be moved to dierent ports. The ports disabled by the BIOS will remain disabled until the system is
restarted.
Option ROM Launch Policy These policies control whether Legacy Option ROMs or UEFI drivers are loaded. Default is ‘All legacy’ for
Windows 7 and other non-Windows congurations. Default is ‘All UEFI’ for Windows 8.1 or later.
Congure Option ROM Launch Policy
●All legacy
●All UEFI
●All UEFI except video
Power Management
Options
Runtime Power Management (enable/disable)
Allows certain operating systems to reduce processor voltage and frequency when the current software load
does not require the full capabilities of the processor. Default is enabled.
Extended Idle Power States (enable/disable)
Allows certain operating systems to decrease the processors power consumption when the processor is idle.
Default is enabled.
S5 Maximum Power Savings (enable/disable)
Computer Setup (F10) Utilities 67
Table 5-3 Computer Setup—Advanced (for advanced users) (continued)
Option Heading
Enabling this feature reduces the power of the system as much as possible in the S5 state. Power is
removed from the wake up circuitry, the expansion slots, and any management features while in S5. Default
is disabled.
SATA Power Management (enable/disable)
Enables or disables SATA bus and/or device power management. Default is enabled.
PCI Express Power Management (enable/disable)
Enabling this option permits the PCI Express links to use Active Power State Management (ASPM) to enter
lower power states while not in use. Default is enabled.
Unique Sleep State Blink Rates (enable/disable)
This feature is designed to provide a visual indication of what sleep state the system is in. Each sleep state
has a unique blink pattern. Default is disabled.
NOTE: A normal shutdown goes to the S4 state for Windows 8 or later.
S0 (On) = Solid white LED.
S3 (Stand By)= 3 blinks at 1Hz (50% duty cycle) followed by a pause of 2 seconds (white LED) — repeated
cycles of 3 blinks and a pause.
S4 (Hibernation)= 4 blinks at 1Hz (50% duty cycle) followed by a pause of 2 seconds (white LED) — repeated
cycles of 4 blinks and a pause.
S5 (Soft O) = LED is o.
Power On from Keyboard Ports (enable/disable)
When enabled, this feature allows a key press to power on the system when it is o (S5 state). If using a USB
keyboard, it must be plugged into one of the rear ports labeled with the keyboard icon. Default is disabled.
Remote Management
Options
Active Management (AMT) (Intel only) (enable/disable). Default is enabled.
Allows you to discover, repair, and protect networked computing devices.
USB Key Provisioning Support (enable/disable) Default is disabled.
USB Redirection Support (enable/disable). Default is enabled.
USB redirection allows USB devices plugged into a client computer to be transparently redirected to the
guest operating system.
Uncongure AMT on next boot (Do Not Apply/Apply). Default is ‘Do Not Apply’.
SOL Terminal Emulation Mode (ANSI / VT100). Default is ANSI.
SOL terminal emulation mode is only activated during remote AMT redirection operations. The emulation
options allow administrators to select which mode works best with their console.
Show Uncongure ME Conrmation Prompt (enable/disable). Default is enabled.
Verbose Boot Messages (enable/disable). Default is enabled.
Verbose boot shows additional logging information during the boot. mainly for debugging if something goes
wrong during bootup.
Watchdog Timer (enable/disable). Default is enabled.
Allows you to set amount of time for a operating system and BIOS watchdog alert to be sent if the timers are
not deactivated. BIOS watchdog is deactivated by BIOS and would indicate that a halt occurred during
execution if the alert is sent to the management console. An operating system alert is deactivated by the
operating system image and would indicate that a hang occurred during its initialization.
●OS Watchdog Timer (min.) – (5/10/15/20/25). Default is 5 min.
●BIOS Watchdog Timer (min.) – (5/10/15/20/25). Default is 5 min.
68 Chapter 5 Computer Setup (F10) Utility
Table 5-3 Computer Setup—Advanced (for advanced users) (continued)
Option Heading
CIRA Timeout (min.) (1/2/3/4/Never)
CIRA is Customer Initiated Remote Assistance, an Intel service to help users employing Active Management
Technology (AMT).
Computer Setup (F10) Utilities 69
Recovering the Conguration Settings
This method of recovery requires that you rst perform the Save to Removable Media command with the
Computer Setup (F10) Utility before Restore is needed. (See Computer Setup–Main on page 60 in the Computer
Setup—File table.)
The Save to Removable Media option creates a le named HPSETUP.TXT on an inserted USB ash media
device. This le can be edited to change the settings on Restore. An asterisk (*) marks the selected option for a
setting.
NOTE: It is recommended that you save any modied computer conguration settings to a USB ash media
device and save the device for possible future use.
To restore the conguration, insert the USB ash media device with the saved conguration and perform the
Restore from Removable Media command with the Computer Setup (F10) Utility. (See Computer Setup–Main
on page 60 in the Computer Setup—File table.)
70 Chapter 5 Computer Setup (F10) Utility
6 Troubleshooting without diagnostics
This chapter provides information on how to identify and correct minor problems, such as USB devices, hard
drive, optical drive, graphics, audio, memory, and software problems. If you encounter problems with the
computer, refer to the tables in this chapter for probable causes and recommended solutions.
NOTE: For information on specic error messages that may appear on the screen during Power-On Self-Test
(POST) at startup, refer to POST error messages and diagnostic front panel LEDs and audible codes
on page 103.
Safety and comfort
WARNING! Misuse of the computer or failure to establish a safe and comfortable work environment may result
in discomfort or serious injury. Refer to the Safety & Comfort Guide at http://www.hp.com/ergo for more
information on choosing a workspace and creating a safe and comfortable work environment. For more
information, refer to the Safety & Regulatory Information guide.
Before you call for technical support
If you are having problems with the computer, try the appropriate solutions below to try to isolate the exact
problem before calling for technical support.
●Run the HP diagnostic tool.
●Run the hard drive self-test in Computer Setup. Refer to Computer Setup (F10) Utility on page 58 for more
information.
●Check the Power LED on the front of the computer to see if it is ashing red. The ashing lights are error
codes that will help you diagnose the problem. Refer to POST error messages and diagnostic front panel
LEDs and audible codes on page 103 for more information.
●If the screen is blank, plug the monitor into a dierent video port on the computer if one is available. Or,
replace the monitor with a monitor that you know is functioning properly.
●If you are working on a network, plug another computer with a dierent cable into the network connection.
There may be a problem with the network plug or cable.
●If you recently added new hardware, remove the hardware and see if the computer functions properly.
●If you recently installed new software, uninstall the software and see if the computer functions properly.
●Boot the computer to the Safe Mode to see if it will boot without all of the drivers loaded. When booting the
operating system, use “Last Known Conguration.”
●Refer to the comprehensive online technical support at http://www.hp.com/support.
●Refer to Helpful hints on page 72 in this guide.
To assist you in resolving problems online, HP Instant Support Professional Edition provides you with self-solve
diagnostics. If you need to contact HP support, use HP Instant Support Professional Edition's online chat feature.
Access HP Instant Support Professional Edition at: http://www.hp.com/go/ispe.
Access the Business Support Center (BSC) at http://www.hp.com/go/bizsupport for the latest online support
information, software and drivers, proactive notication, and worldwide community of peers and HP experts.
Safety and comfort 71
If it becomes necessary to call for technical assistance, be prepared to do the following to ensure that your
service call is handled properly:
●Be in front of your computer when you call.
●Write down the computer serial number, product ID number, and monitor serial number before calling.
●Spend time troubleshooting the problem with the service technician.
●Remove any hardware that was recently added to your system.
●Remove any software that was recently installed.
●Restore the system from the Recovery Disc Set that you created or restore the system to its original
factory condition in System Software Requirement Disks (SSRD).
CAUTION: Restoring the system will erase all data on the hard drive. Be sure to back up all data les before
running the restore process.
NOTE: For sales information and warranty upgrades (Care Packs), call your local authorized service provider or
dealer.
Helpful hints
If you encounter problems with the computer, monitor, or software, see the following list of general suggestions
before taking further action:
●Check that the computer and monitor are plugged into a working electrical outlet.
●Check that the voltage select switch (some models) is set to the appropriate voltage for your region (115V
or 230V).
●Check that the computer is turned on and the white power light is on.
●Check that the monitor is turned on and the green monitor light is on.
●Check the Power LED on the front of the computer to see if it is ashing red. The ashing lights are error
codes that will help you diagnose the problem. Refer to POST error messages and diagnostic front panel
LEDs and audible codes on page 103 for more information.
●Turn up the brightness and contrast controls of the monitor if the monitor is dim.
●Press and hold any key. If the system beeps, then the keyboard should be operating correctly.
●Check all cable connections for loose connections or incorrect connections.
●Wake the computer by pressing any key on the keyboard or pressing the power button. If the system
remains in suspend mode, shut down the computer by pressing and holding the power button for at least
four seconds then press the power button again to restart the computer. If the system will not shut down,
unplug the power cord, wait a few seconds, then plug it in again. The computer will restart if it is set to
power on automatically as soon as power is restored in Computer Setup. If it does not restart, press the
power button to start the computer.
●Recongure the computer after installing a non-plug and play expansion board or other option. See Solving
Hardware Installation Problems on page 90 for instructions.
●Be sure that all the needed device drivers have been installed. For example, if you are using a printer, you
need a driver for that model printer.
●Remove all bootable media (CD/DVD or USB device) from the system before turning it on.
72 Chapter 6 Troubleshooting without diagnostics
●If you have installed an operating system other than the factory-installed operating system, check to be
sure that it is supported on the system.
●If the system has multiple video sources (embedded, PCI, or PCI-Express adapters) installed (embedded
video on some models only) and a single monitor, the monitor must be plugged into the monitor connector
on the source selected as the primary VGA adapter. During boot, the other monitor connectors are disabled
and if the monitor is connected into these ports, the monitor will not function. You can select which source
will be the default VGA source in Computer Setup.
CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the
system board. You must disconnect the power cord from the power source before opening the computer to
prevent system board or component damage.
Solving general problems
You may be able to easily resolve the general problems described in this section. If a problem persists and you
are unable to resolve it yourself or if you feel uncomfortable about performing the operation, contact an
authorized dealer or reseller.
WARNING! When the computer is plugged into an AC power source, voltage is always applied to the system
board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to disconnect the
power cord from the wall outlet and allow the internal system components to cool before touching.
Cannot access the Computer Setup (F10) Utility when booting the computer.
Cause Solution
The Computer Setup (F10) Utility is set to “fast boot” causing the
F10 access screen to display too briey when booting the computer.
Before turning on the computer, press and hold F10. Turn on the
computer and continue to hold F10 until the Computer Setup (F10)
Utility is displayed.
- or –
Follow the Windows instructions for rebooting the computer into
the Computer Setup (F10) Utility.
Computer appears locked up and will not turn o when the power button is pressed.
Cause Solution
Software control of the power switch is not functional. 1. Press and hold the power button for at least four seconds
until the computer turns o.
2. Disconnect the power cord from the electrical outlet.
Computer will not respond to keyboard or mouse.
Cause Solution
Computer is in Sleep state. To resume from Sleep state, press the power button.
CAUTION: When attempting to resume from Sleep state, do not
hold down the power button for more than four seconds.
Otherwise, the computer will shut down and you will lose any
unsaved data.
System has locked up. Restart computer.
Solving general problems 73
Computer date and time display is incorrect.
Cause Solution
RTC (real-time clock) battery may need to be replaced.
NOTE: Connecting the computer to a live AC outlet prolongs the
life of the RTC battery.
Reset the date and time under Control Panel (Computer Setup can
also be used to update the RTC date and time). If the problem
persists, replace the RTC battery. See the Removal and
Replacement section for instructions on installing a new battery, or
contact an authorized dealer or reseller for RTC battery
replacement.
To access Control Panel in Windows 7, select Start, and then select
Control Panel.
To access Control Panel in Windows 8.1, from the Start screen, type
c, and then select Control Panel from the list of applications.
To access Control Panel in Windows 10, type control panel in
the taskbar search box, and then select Control Panel.
There is no sound or sound volume is too low.
Cause Solution
System volume may be set low or muted. 1. Check the Computer Setup settings to make sure the internal
system speaker is not muted (this setting does not aect the
external speakers).
2. Make sure the external speakers are properly connected and
powered on and that the speakers' volume control is set
correctly.
3. Use the system volume control available in the operating
system to make sure the speakers are not muted or to
increase the volume.
Cannot remove computer cover or access panel.
Cause Solution
Smart Cover Lock, featured on some computers, is locked. Unlock the Smart Cover Lock using Computer Setup.
In case of forgotten password, power loss, or computer
malfunction, you must manually disable the Smart Cover lock . A
key to unlock the Smart Cover Lock is not available from HP. Keys
are typically available from a hardware store.
Poor performance.
Cause Solution
Processor is too hot. 1. Make sure airow to the computer is not blocked. Leave a
10.2-cm (4-inch) clearance on all vented sides of the
computer and above the monitor to permit the required
airow.
2. Make sure fans are connected and working properly (some
fans only operate when needed).
3. Make sure the processor heat sink is installed properly.
74 Chapter 6 Troubleshooting without diagnostics
Poor performance.
Cause Solution
Hard drive is full. Transfer data from the hard drive to create more space on the hard
drive.
Low on memory. Add more memory.
Hard drive fragmented. Defragment hard drive.
Program previously accessed did not release reserved memory
back to the system.
Restart the computer.
Virus resident on the hard drive. Run virus protection program.
Too many applications running. 1. Close unnecessary applications to free up memory.
2. Add more memory.
3. Some applications run in the background and can be closed by
right-clicking on their corresponding icons in the task tray. To
prevent these applications from launching at startup:
In Windows 7:
a. Go to Start > All Programs > Accessories > Run
b. Type msconfig, and then press Enter.
c. On the Startup tab of the System Conguration Utility,
clear applications that you do not want to launch
automatically, and the click OK.
In Windows 8.1:
a. On the Start screen, right-click, and then select the All
apps icon.
b. Under Windows System, click Run.
c. Type msconfig, and then press Enter.
d. On the Startup tab of the System Conguration Utility,
clear applications that you do not want to launch
automatically, and the click OK.
In Windows 10:
a. Type msconfig in the taskbar search box, and then
select mscong.
b. On the Startup tab of the System Conguration Utility,
click Open Task Manager.
c. Select applications that you do not want to launch
automatically, and the click Disable.
Some software applications, especially games, are stressful on the
graphics subsystem.
1. Lower the display resolution for the current application or
consult the documentation that came with the application for
suggestions on how to improve performance by adjusting
parameters in the application.
2. Add more memory.
3. Upgrade the graphics solution.
Cause unknown. Restart the computer.
Solving general problems 75
Computer powered o automatically and the Power LED ashes red four times and then white two times.
Cause Solution
Processor thermal protection activated:
A fan may be blocked or not turning.
OR
The heat sink is not properly attached to the processor.
1. Ensure that the computer air vents are not blocked and the
processor cooling fan is running.
2. Open the access panel, press the power button, and see if the
processor fan (or other system fan) spins. If the fan does not
spin, make sure the fan cable is plugged onto the system
board header.
3. If fan a plugged in and not spinning, replace it.
System does not power on and the LEDs on the front of the computer are not ashing.
Cause Solution
System unable to power on. Press and hold the power button for less than 4 seconds. If the hard
drive LED turns white, then:
1. If equipped with a voltage selector, check that the voltage
selector (located on the rear of the power supply) is set to the
appropriate voltage. Proper voltage setting depends on your
region.
2. Remove the expansion cards one at a time until the 5V_aux
light on the system board turns on.
3. Replace the system board.
OR
Press and hold the power button for less than 4 seconds. If the hard
drive LED does not turn on white then:
1. Check that the unit is plugged into a working AC outlet.
2. Open the access panel and check that the power button cable
is properly connected to the system board.
3. Check that the power supply cables are properly connected to
the system board.
4. Check to see if the 5V_aux light on the system board is turned
on. If it is turned on, then replace the power button assembly.
5. If the 5V_aux light on the system board is o, then replace the
power supply.
6. Replace the system board.
76 Chapter 6 Troubleshooting without diagnostics
Solving power problems
Common causes and solutions for power problems are listed in the following table.
Power supply shuts down intermittently.
Cause Solution
If equipped with a voltage selector, voltage selector switch on rear
of computer chassis (some models) not switched to correct line
voltage (115V or 230V).
Select the proper AC voltage using the selector switch.
Power supply will not turn on because of internal power supply
fault.
Replace the power supply.
Computer powered o automatically and the Power LED ashes Red two times, once every second, followed by a two second pause, and
the computer beeps two times. (Beeps stop after fth iteration but LEDs continue ashing.)
Computer powered o automatically and the Power LED ashes red four times and then white two times.
Cause Solution
Processor thermal protection activated:
A fan may be blocked or not turning.
OR
The heat sink is not properly attached to the processor.
1. Ensure that the computer air vents are not blocked and the
processor cooling fan is running.
2. Open the access panel, press the power button, and see if the
processor fan (or other system fan) spins. If the fan does not
spin, make sure the fan cable is plugged onto the system
board header.
3. If fan a plugged in and not spinning, replace it.
Power LED ashes Red four times, once every second, followed by a two second pause, and the computer beeps four times. (Beeps stop
after fth iteration but LEDs continue ashing.)
Computer powered o automatically and the Power LED ashes red three times and then white four times.
Cause Solution
Power failure (power supply is overloaded). 1. If equipped with a voltage selector, check that the voltage
selector, located on the rear of the power supply (some
models), is set to the appropriate voltage. Proper voltage
setting depends on your region.
2. Open the access panel and ensure the power supply cable is
seated into the connector on the system board.
3. Check if a device is causing the problem by removing ALL
attached devices (such as hard drives or optical drives and
expansion cards). Power on the system. If the system enters
POST, then power o and replace one device at a time and
repeat this procedure until failure occurs. Replace the device
that is causing the failure. Continue adding devices one at a
time to ensure all devices are functioning properly.
4. Replace the power supply.
5. Replace the system board.
Solving power problems 77
Solving hard drive problems
Hard drive error occurs.
Cause Solution
Hard disk has bad sectors or has failed. 1. In Windows 7, click Start, click Computer, and right-click on a
drive. Select Properties, and then select the Tools tab. Under
Error-checking click Check Now.
In Windows 8.1, on the Start screen type e, and then select
File Explorer from the list of applications. In the left column,
expand Computer, right-click on a drive, select Properties, and
then select the Tools tab. Under Error checking click Check.
In Windows 10, type file in the taskbar search box, and
then select File Explorer from the list of applications. In the
left column, expand This PC, right-click on a drive, select
Properties, and then select the Tools tab. Under Error
checking click Check.
2. Use a utility to locate and block usage of bad sectors. If
necessary, reformat the hard disk.
Disk transaction problem.
Cause Solution
Either the directory structure is bad or there is a problem with a le. In Windows 7, click Start, expand Computer, and right-click on a
drive. Select Properties, and then select the Tools tab. Under Error-
checking click Check Now.
In Windows 8.1, on the Start screen type e, and then click File
Explorer from the list of applications. In the left column, expand
Computer, right-click on a drive, select Properties, and then select
the Tools tab. Under Error checking click Check.
In Windows 10, type file in the taskbar search box, and then
select File Explorer from the list of applications. In the left column,
expand This PC, right-click on a drive, select Properties, and then
select the Tools tab. Under Error checking click Check.
Drive not found (identied).
Cause Solution
Cable could be loose. Check cable connections.
The system may not have automatically recognized a newly
installed device.
See reconguration directions in the Solving Hardware Installation
Problems on page 90 section. If the system still does not
recognize the new device, check to see if the device is listed within
Computer Setup. If it is listed, the probable cause is a driver
problem. If it is not listed, the probable cause is a hardware
problem.
If this is a newly installed drive, run the Computer Setup utility and
try adding a POST delay under Advanced > Boot Options.
78 Chapter 6 Troubleshooting without diagnostics
Drive not found (identied).
Cause Solution
The device is attached to a SATA port that has been hidden in
Computer Setup.
Run the Computer Setup utility and ensure Device Available is
selected for the device's SATA port in Advanced > Port Options.
Drive responds slowly immediately after power-up. Run Computer Setup and increase the POST Delay in Advanced >
Boot Options.
Nonsystem disk/NTLDR missing message.
Cause Solution
The system is trying to start from the hard drive but the hard drive
may have been damaged.
▲Perform Drive Protection System (DPS) testing in system
ROM.
System les missing or not properly installed. 1. Insert bootable media and restart the computer.
2. Boot to the windows installation media and select the
recovery option. If only a restore kit is available, then select
the File Backup Program option, and then restore the system.
3. Install system les for the appropriate operating system.
Hard drive boot has been disabled in Computer Setup. Run the Computer Setup utility and enable the hard drive entry in
the Advanced > Boot Options list.
Bootable hard drive is not attached as rst in a multi-hard drive
conguration.
If attempting to boot from a hard drive, ensure it is attached to the
system board dark blue SATA connector.
Bootable hard drive is not listed rst in the Boot Order. Run the Computer Setup utility and select Advanced > Boot Options
and ensure the bootable hard drive is listed immediately under the
Hard Drive entry.
Computer will not boot from hard drive.
Cause Solution
The device is attached to a SATA port that has been hidden in
Computer Setup.
1. Check SATA cable connections.
2. Run the Computer Setup utility and ensure Device Available is
selected for the device's SATA port in Advanced > Port
Options.
Boot order is not correct. Run the Computer Setup utility and change boot sequence in
Advanced > Boot Options.
Hard drive is damaged. Observe if the front panel Power LED is blinking RED and if any
beeps are heard. See POST error messages and diagnostic front
panel LEDs and audible codes on page 103 to determine possible
causes for the blinking red and beep codes.
See the Worldwide Limited Warranty for terms and conditions.
Computer seems to be locked up.
Cause Solution
Program in use has stopped responding to commands. 1. Use the task manager to close programs that do not respond.
Solving hard drive problems 79
Computer seems to be locked up.
Cause Solution
2. Attempt the normal Windows “Shut Down” procedure. If this
fails, press the power button for four or more seconds to turn
o the power. To restart the computer, press the power
button again.
Solving media card reader problems
Media card will not work in a digital camera after formatting it in Windows.
Cause Solution
By default, Windows will format any media card with a capacity
greater than 32MB with the FAT32 format. Some digital cameras
use the FAT (FAT16 & FAT12) format and can not operate with a
FAT32 formatted card.
Either format the media card in the digital camera or select FAT le
system to format the media card in a computer with Windows.
A write-protected or locked error occurs when attempting to write to the media card.
Cause Solution
Media card is locked. Locking the media card is a safety feature that
prevents writing to and deleting from an SD/Memory Stick/PRO
card.
If using an SD card, make sure that the lock tab located on the right
of the SD card is not in the locked position. If using a Memory
Stick/PRO card, make sure that the lock tab located on the bottom
of the Memory Stick/PRO card is not in the locked position.
Can not write to the media card.
Cause Solution
The media card is a read-only memory (ROM) card. Check the manufacturer’s documentation included with your card to
see if it writable. Refer to the previous section for a list of
compatible cards.
Media card is locked. Locking the media card is a safety feature that
prevents writing to and deleting from an SD/Memory Stick/PRO
card.
If using an SD card, make sure that the lock tab located on the right
of the SD card is not in the locked position. If using a Memory
Stick/PRO card, make sure that the lock tab located on the bottom
of the Memory Stick/PRO card is not in the locked position.
Unable to access data on the media card after inserting it into a slot.
Cause Solution
The media card is not inserted properly, is inserted in the wrong
slot, or is not supported.
Ensure that the card is inserted properly with the gold contact on
the correct side. The green LED will light if inserted properly.
80 Chapter 6 Troubleshooting without diagnostics
Do not know how to remove a media card correctly.
Cause Solution
The computer’s software is used to safely eject the card. In Windows 7, click Start, select Computer, right-click on the
corresponding drive icon, and then select Eject. Pull the card out of
the slot.
In Windows 8.1, on the Start screen, type e, and then click File
Explorer from the list of applications. Expand Computer, right-click
on the corresponding drive icon, and then select Eject. Pull the card
out of the slot.
In Windows 10, type file in the taskbar search box, and then
select File Explorer from the list of applications. In the left column,
expand This PC, right-click on the corresponding drive icon, and
then select Eject. Pull the card out of the slot.
NOTE: Never remove the card when the green LED is ashing
After installing the media card reader and booting to Windows, the reader and the inserted cards are not recognized by the computer.
Cause Solution
The operating system needs time to recognize the device if the
reader was just installed into the computer and you are turning the
PC on for the rst time.
Wait a few seconds so that the operating system can recognize the
reader and the available ports, and then recognize the media
inserted in the reader.
After inserting a media card in the reader, the computer attempts to boot from the media card.
Cause Solution
The inserted media card has boot capability. 1. If you do not want to boot from the media card, remove it
during boot or do not select the option to boot from the
inserted media card during the boot process.
2. During POST (Power On Self-Test), press F9 to modify the
boot menu.
3. Change the boot sequence in F10 Computer Setup.
Solving display problems
If you encounter display problems, see the documentation that came with the monitor and to the common
causes and solutions listed in the following table.
Blank screen (no video).
Cause Solution
Monitor is not turned on and the monitor light is not on. Turn on the monitor and check that the monitor light is on.
Bad monitor. Try a dierent monitor.
The cable connections are not correct. Check the cable connection from the monitor to the computer and
to the electrical outlet.
You may have a screen blanking utility installed or energy saver
features are enabled.
Press any key or click the mouse button and type your password (if
set).
Solving display problems 81
Blank screen (no video).
Cause Solution
System ROM is corrupted; system is running in Boot Block
Emergency Recovery Mode (indicated by eight beeps).
Reash the system ROM with the latest BIOS image.
You are using a xed-sync monitor and it will not sync at the
resolution chosen.
Be sure that the monitor can accept the same horizontal scan rate
as the resolution chosen.
Computer is in Sleep state. Press the power button to resume from Sleep state.
CAUTION: When attempting to resume from Sleep state, do not
hold down the power button for more than four seconds.
Otherwise, the computer will shut down and you will lose any
unsaved data.
Monitor cable is plugged into the wrong connector. Systems may have a monitor connection on both the motherboard
or an add-in card. Try moving the monitor connection to a dierent
connector on the back of the computer
Monitor settings in the computer are not compatible with the
monitor.
1. In Control Panel, select Category from the View by list, then
under Appearance and Personalization, select Adjust screen
resolution.
To access Control Panel in Windows 7, click Start, and then
select Control Panel.
To access Control Panel in Windows 8.1, from the Start screen,
type c, and then select Control Panel from the list of
applications.
To access Control Panel in Windows 10, type control
panel in the taskbar search box, and then select Control
Panel from the list of applications.
2. Expand the Resolution box, and then use the sliding control to
reset the resolution.
Monitor is congured to use an input that is not active. Use the monitor's on-screen menu controls to select the input that
is being driven by the system. Refer to the monitor's user
documentation for more information on the on-screen controls and
settings.
Blank screen and the power LED ashes Red ve times, once every second, followed by a two second pause, and the computer beeps ve
times. (Beeps stop after fth iteration but LEDs continue ashing.)
Cause Solution
Pre-video memory error. 1. Reseat DIMMs. Power on the system.
2. Replace DIMMs one at a time to isolate the faulty module.
3. Replace third-party memory with HP memory.
4. Replace the system board.
Blank screen and the power LED ashes Red six times, once every second, followed by a two second pause, and the computer beeps six
times. (Beeps stop after fth iteration but LEDs continue ashing.)
Cause Solution
Pre-video graphics error. For systems with a graphics card:
82 Chapter 6 Troubleshooting without diagnostics
Blank screen and the power LED ashes Red six times, once every second, followed by a two second pause, and the computer beeps six
times. (Beeps stop after fth iteration but LEDs continue ashing.)
Cause Solution
1. Reseat the graphics card (if applicable). Power on the system.
2. Replace the graphics card (if applicable).
3. Replace the system board.
For systems with integrated graphics, replace the system board.
Blank screen and the power LED ashes Red seven times, once every second, followed by a two second pause, and the computer beeps
seven times. (Beeps stop after fth iteration but LEDs continue ashing.)
Cause Solution
System board failure (ROM detected failure prior to video). Replace the system board.
Monitor does not function properly when used with energy saver features.
Cause Solution
Monitor without energy saver capabilities is being used with energy
saver features enabled.
Disable monitor energy saver feature.
Dim characters.
Cause Solution
The brightness and contrast controls are not set properly. Adjust the monitor brightness and contrast controls.
Cables are not properly connected. Check that the graphics cable is securely connected to the graphics
card (if applicable) or video connector and the monitor.
Blurry video or requested resolution cannot be set.
Cause Solution
If the graphics controller was upgraded, the correct graphics drivers
may not be loaded.
Install the video drivers included in the upgrade kit.
Monitor is not capable of displaying requested resolution. Change requested resolution.
Graphics card is bad. Replace the graphics card.
The picture is broken up, rolls, jitters, or ashes.
Cause Solution
The monitor connections may be incomplete or the monitor may be
incorrectly adjusted.
1. Be sure the monitor cable is securely connected to the
computer.
Solving display problems 83
The picture is broken up, rolls, jitters, or ashes.
Cause Solution
2. In a two-monitor system or if another monitor is in close
proximity, be sure the monitors are not interfering with each
other’s electromagnetic eld by moving them apart.
3. Fluorescent lights or fans may be too close to the monitor.
Monitor needs to be degaussed. Degauss the monitor. Refer to the documentation that came with
the monitor for instructions.
Image is not centered.
Cause Solution
Position may need adjustment. Press the monitor's Menu button to access the OSD menu. Select
ImageControl/ Horizontal Position or Vertical Position to adjust the
horizontal or vertical position of the image.
“No Connection, Check Signal Cable” displays on screen.
Cause Solution
Monitor video cable is disconnected. Connect the video cable between the monitor and computer.
CAUTION: Ensure that the computer power is o while connecting
the video cable.
“Out of Range” displays on screen.
Cause Solution
Video resolution and refresh rate are set higher than what the
monitor supports.
Restart the computer and enter Safe Mode. Change the settings to
a supported setting then restart the computer so that the new
settings take eect.
To enter Safe Mode in Windows 7:
1. Restart the computer.
2. Press and hold the F8 key as your computer restarts, before
the Windows logo appears. If the Windows logo appears, you
must restart the computer and try again.
3. On the Advanced Boot Options screen, use the arrow keys to
highlight the safe mode option you want, and then press
Enter.
4. Log on to your computer with a user account that has
administrator rights.
When your computer is in safe mode, Safe Mode displays in
the corners of your monitor. To exit safe mode, restart your
computer and let Windows start normally.
To enter Safe Mode in Windows 8.1:
1. Press the Windows logo + l to open the Settings charm.
84 Chapter 6 Troubleshooting without diagnostics
“Out of Range” displays on screen.
Cause Solution
2. Select Change PC Settings, select General, and then under
Advanced startup, click Restart now.
3. Select Troubleshoot, select Advanced options, select Startup
Settings, and then click Restart.
4. Use the function keys or number keys to select the safe mode
option you want.
When your computer is in safe mode, Safe Mode displays in
the corners of your monitor. To exit safe mode, restart your
computer and let Windows start normally.
To enter Safe Mode in Windows 10:
1. Log into the computer using an Administrator account.
2. Type msconfig in the taskbar search box, and then select
mscong from the list of applications.
3. Click the Boot tab, select Safe boot and then click OK.
High pitched noise coming from inside a at panel monitor.
Cause Solution
Brightness and/or contrast settings are too high. Lower brightness and/or contrast settings.
Fuzzy focus; streaking, ghosting, or shadowing eects; horizontal scrolling lines; faint vertical bars; or unable to center the picture on the
screen (at panel monitors using an analog VGA input connection only).
Cause Solution
Flat panel monitor’s internal digital conversion circuits may be
unable to correctly interpret the output synchronization of the
graphics card.
1. Select the monitor’s Auto-Adjustment option in the monitor’s
on-screen display menu.
2. Manually synchronize the Clock and Clock Phase on-screen
display functions. To download a SoftPaq that will assist you
with the synchronization, go to the following Web site, select
the appropriate monitor, and download either SP32347 or
SP32202: http://www.hp.com/support
Graphics card is not seated properly or is bad (some models). 1. Reseat the graphics card.
2. Replace the graphics card.
Certain typed symbols do not appear correct.
Cause Solution
The font you are using does not support that particular symbol. Use the Character Map to locate and select the appropriate symbol.
You can copy the symbol from the Character Map into a document.
In Windows 7, click Start, select All Programs, select Accessories,
select System Tools, and then select Character Map.
Solving display problems 85
Certain typed symbols do not appear correct.
Cause Solution
In Windows 8.1, on the Start screen, type ch, and then select
Character Map from the list of applications.
In Windows 10, type ch in the taskbar search box, and then select
Character Map from the list of applications.
Solving audio problems
If the computer has audio features and you encounter audio problems, see the common causes and solutions
listed in the following table.
Sound cuts in and out.
Cause Solution
Processor resources are being used by other open applications. Shut down all open processor-intensive applications.
Sound does not come out of the speaker or headphones.
Cause Solution
Software volume control is turned down or muted. Double-click the Speaker icon on the taskbar, then make sure that
Mute is not selected and use the volume slider to adjust the
volume.
NOTE: In Windows 8.1, the taskbar is available at the bottom of
the Desktop screen.
Audio is hidden in Computer Setup. Enable the audio in Computer Setup: Advanced > Built-in Device
Options.
The external speakers are not turned on. Turn on the external speakers.
The audio device may be connected to the wrong jack. Ensure that the device is connected to the correct jack on the
computer. The rear audio jack output is the green receptacle. The
speakers should be plugged into the line-out jack and the
headphones should be plugged into the headphone jack.
External speakers plugged into the wrong audio jack on a recently
installed sound card.
See the sound card documentation for proper speaker connection.
The rear audio jack output is the green receptacle.
Headphones or devices connected to the line-out connector mute
the internal speaker.
Turn on and use headphones or external speakers, if connected, or
disconnect headphones or external speakers.
Computer is in Sleep state. Press the power button to resume from Sleep state.
CAUTION: When attempting to resume from Sleep state, do not
hold down the power button for more than four seconds.
Otherwise, the computer will shut down and you will lose any
unsaved data.
Internal speaker is disabled in Computer Setup. Enable the internal speaker in Computer Setup. Select Advanced >
Built-in Device Options.
The application is set to use a dierent audio device than speakers. Some graphics cards support audio over the DisplayPort connection
(if applicable), so multiple audio devices may be listed in Device
Manager. Make sure the correct device is being used.
86 Chapter 6 Troubleshooting without diagnostics
Sound does not come out of the speaker or headphones.
Cause Solution
To access Device Manager in Windows 7, click Start, select Control
Panel, and then select Device Manager.
To access Device Manager in Windows 8.1, from the Start screen,
type c, select Control Panel from the list of applications, and then
select Device Manager.
To access Device Manager in Windows 10, type device
manager in the taskbar search box, and then select Device
Manager from the list of applications.
Some applications can select which audio output device is used. Make sure the application has selected the correct audio device.
The operating system controls may be set to use a dierent audio
device as the default output device than what is expected.
Set the operating system to use the correct audio device.
Sound from headphones is not clear or mued.
Cause Solution
Headphones are plugged into the rear audio output connector. The
rear audio output connector is for powered audio devices and is not
designed for headphone use.
Plug the headphones into the headphone connector on the front of
the computer.
Computer appears to be locked up while recording audio.
Cause Solution
The hard disk may be full. Before recording, make sure there is enough free space on the hard
disk. You can also try recording the audio le in a compressed
format.
Line-in jack is not functioning properly.
Cause Solution
Jack has been recongured in the audio driver or application
software.
In the audio driver or application software, recongure the jack or
set the jack to its default value.
There is no sound or sound volume is too low.
Cause Solution
The application is set to use a dierent audio device than speakers. Some graphics cards support audio over the DisplayPort connection
(if applicable), so multiple audio devices may be listed in Device
Manager. Make sure the correct device is being used.
To access Device Manager in Windows 7, click Start, select Control
Panel, and then select Device Manager.
To access Device Manager in Windows 8.1, from the Start screen,
type c, select Control Panel from the list of applications, and then
select Device Manager.
Solving audio problems 87
There is no sound or sound volume is too low.
Cause Solution
To access Device Manager in Windows 10, type device
manager in the taskbar search box, and then select Device
Manager from the list of applications.
Some applications can select which audio output device is used. Make sure the application has selected the correct audio device.
The operating system controls may be set to use a dierent audio
device as the default output device than what is expected.
Set the operating system to use the correct audio device.
Solving printer problems
If you encounter printer problems, see the documentation that came with the printer and to the common causes
and solutions listed in the following table.
Printer will not print.
Cause Solution
Printer is not turned on and online. Turn the printer on and make sure it is online.
The correct printer drivers for the application are not installed. 1. Install the correct printer driver for the application.
2. Try printing using the MS-DOS command:
DIR C:\ > [printer port]
where [printer port] is the address of the printer being
used. If the printer works, reload the printer driver.
To run MS-DOS commands, press the Windows key + r, type cmd in
the Open box, and then click OK.
If you are on a network, you may not have made the connection
to the printer.
Make the proper network connections to the printer.
Printer may have failed. Run printer self-test.
Printer will not turn on.
Cause Solution
The cables may not be connected properly. Reconnect all cables and check the power cord and electrical outlet.
Printer prints garbled information.
Cause Solution
The correct printer driver for the application is not installed. Install the correct printer driver for the application.
The cables may not be connected properly. Reconnect all cables.
Printer memory may be overloaded. Reset the printer by turning it o for one minute, then turn it back
on.
88 Chapter 6 Troubleshooting without diagnostics
Printer will not print.
Cause Solution
The printer may be out of paper. Check the paper tray and rell it if it is empty.
Solving keyboard and mouse problems
If you encounter keyboard or mouse problems, see the documentation that came with the equipment and to the
common causes and solutions listed in the following table.
A wireless keyboard/mouse is not working correctly. Symptoms include lagging mouse movement, jumpy mouse/keyboard, or no function
of mouse/keyboard and external drive.
Cause Solution
If your computer is equipped with USB 3.0 ports, connected USB 3.0
devices can interfere with the wireless keyboard USB receiver.
Connect the wireless keyboard USB receiver to a USB 2.0 port that
is separated from ports with USB 3.0 devices. If you still experience
interference, you may have to place the connectors farther apart
using an external USB hub.
Keyboard commands and typing are not recognized by the computer.
Cause Solution
Keyboard connector is not properly connected. Shut down the computer, reconnect the keyboard to the back of the
computer, and then restart the computer.
Program in use has stopped responding to commands. Shut down your computer using the mouse and then restart the
computer.
Keyboard needs repairs. See the Worldwide Limited Warranty for terms and conditions.
Computer is in Sleep state. Press the power button to resume from Sleep state.
CAUTION: When attempting to resume from Sleep date, do not
hold down the power button for more than four seconds.
Otherwise, the computer will shut down and you will lose any
unsaved data.
Mouse does not respond to movement or is too slow.
Cause Solution
Mouse connector is not properly plugged into the back of the
computer.
Shut down the computer using the keyboard.
Windows 7:
1. Press the Ctrl and Esc keys at the same time (or press the
Windows logo key) to display the Start menu.
2. Use the arrow keys to select Shut Down and then press Enter.
3. After the shutdown is complete, plug the mouse connector
into the back of the computer (or the keyboard) and restart.
Windows 8.1:
1. Press the Windows logo + l to open the Settings charm.
Solving keyboard and mouse problems 89
Mouse does not respond to movement or is too slow.
Cause Solution
2. Use the arrow keys to select Power, and then press Enter.
3. Use the arrow keys to select Shut Down, and then press Enter.
4. After the shutdown is complete, plug the mouse connector
into the back of the computer (or the keyboard) and restart.
Windows 10:
1. Press the Ctrl and Esc keys at the same time (or press the
Windows logo key) to display the Start menu.
2. Use the arrow keys to scroll to and select the power icon at
the top right on the menu, and then press Enter.
3. Use the arrow keys to select Shut Down, and then press Enter.
4. After the shutdown is complete, plug the mouse connector
into the back of the computer (or the keyboard) and restart.
Program in use has stopped responding to commands. Shut down the computer using the keyboard then restart the
computer.
Mouse may need cleaning. Remove the roller ball cover on the mouse and clean the internal
components.
Mouse may need repair. See the Worldwide Limited Warranty for terms and conditions.
Computer is in Sleep state. Press the power button to resume from Sleep state.
CAUTION: When attempting to resume from Sleep state, do not
hold down the power button for more than four seconds.
Otherwise, the computer will shut down and you will lose any
unsaved data.
Mouse will only move vertically, horizontally, or movement is jerky.
Cause Solution
Mouse roller ball or the rotating encoder shafts that make contact
with the ball are dirty.
Remove roller ball cover from the bottom of the mouse and clean
the internal components with a mouse cleaning kit available from
most computer stores.
Solving Hardware Installation Problems
You may need to recongure the computer when you add or remove hardware, such as an additional drive or
expansion card. If you install a plug and play device, Windows automatically recognizes the device and
congures the computer. If you install a non-plug and play device, you must recongure the computer after
completing installation of the new hardware. In Windows, use the Add Hardware Wizard and follow the
instructions that appear on the screen.
To open the Add Hardware Wizard, open a Command Prompt and open hdwwiz.exe.
WARNING! When the computer is plugged into an AC power source, voltage is always applied to the system
board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to disconnect the
power cord from the wall outlet and allow the internal system components to cool before touching.
90 Chapter 6 Troubleshooting without diagnostics
Table 6-1 Solving Hardware Installation Problems
A new device is not recognized as part of the system.
Cause Solution
Device is not seated or connected properly. Ensure that the device is properly and securely connected and that
pins in the connector are not bent down.
Cable(s) of new external device are loose or power cables are
unplugged.
Ensure that all cables are properly and securely connected and that
pins in the cable or connector are not bent down.
Power switch of new external device is not turned on. Turn o the computer, turn on the external device, then turn on the
computer to integrate the device with the computer system.
When the system advised you of changes to the conguration, you
did not accept them.
Reboot the computer and follow the instructions for accepting the
changes.
A plug and play board may not automatically congure when
added if the default conguration conicts with other devices.
Use Windows Device Manager to deselect the automatic settings for
the board and choose a basic conguration that does not cause a
resource conict. You can also use Computer Setup to recongure
or disable devices to resolve the resource conict.
To access Device Manager in Windows 7, click Start, select Control
Panel, and then select Device Manager.
To access Device Manager in Windows 8.1, from the Start screen,
type c, select Control Panel from the list of applications, and then
select Device Manager.
To access Device Manager in Windows 10, type device
manager in the taskbar search box, and then select Device
Manager from the list of applications.
USB ports on the computer are disabled in Computer Setup. Run the Computer Setup utility and ensure that Device available is
selected for appropriate USB ports under Advanced > Port Options.
Computer will not start.
Cause Solution
Wrong memory modules were used in the upgrade or memory
modules were installed in the wrong location.
1. Review the documentation that came with the system to
determine if you are using the correct memory modules and
to verify the proper installation.
NOTE: DIMM1 or XMM1 must always be installed. DIMM1
must be installed before DIMM2, and DIMM3 must be installed
before DIMM4.
2. Observe the beeps and LED lights on the front of the
computer. Beeps and ashing LEDs are codes for specic
problems.
3. If you still cannot resolve the issue, contact Customer
Support.
Solving Hardware Installation Problems 91
Power LED ashes Red three times and then white two times.
Cause Solution
Memory is installed incorrectly or is bad. CAUTION: To avoid damage to the DIMMs or the system board,
you must unplug the computer power cord before attempting to
reseat, install, or remove a DIMM module.
1. Reseat DIMMs. Power on the system.
2. Replace DIMMs one at a time to isolate the faulty module.
NOTE: DIMM1 or XMM1 must always be installed. DIMM1
must be installed before DIMM2, and DIMM3 must be installed
before DIMM4
3. Replace third-party memory with HP memory.
4. Replace the system board.
Solving Network Problems
Some common causes and solutions for network problems are listed in the following table. These guidelines do
not discuss the process of debugging the network cabling.
Table 6-2 Solving Network Problems
Network driver does not detect network controller.
Cause Solution
Network controller is disabled. 1. Run Computer Setup and enable network controller.
2. Enable the network controller in the operating system using
Device Manager.
To access Device Manager in Windows 7, click Start, select
Control Panel, and then select Device Manager.
To access Device Manager in Windows 8.1, from the Start
screen, type c, select Control Panel from the list of
applications, and then select Device Manager.
To access Device Manager in Windows 10, type device
manager in the taskbar search box, and then select Device
Manager from the list of applications.
Incorrect network driver. Check the network controller documentation for the correct driver
or obtain the latest driver from the manufacturer’s Web site.
Network status link light never ashes.
NOTE: The network status light is supposed to ash when there is network activity.
Cause Solution
No active network is detected. Check cabling and network equipment for proper connection.
Network controller is not set up properly. Check for the device status within Windows, such as Device
Manager for driver load and the Network Connections applet within
Windows for link status.
92 Chapter 6 Troubleshooting without diagnostics
Table 6-2 Solving Network Problems (continued)
Network status link light never ashes.
NOTE: The network status light is supposed to ash when there is network activity.
Cause Solution
To access Device Manager in Windows 7, click Start, select Control
Panel, and then select Device Manager.
To access Device Manager in Windows 8.1, from the Start screen,
type c, select Control Panel from the list of applications, and then
select Device Manager.
To access Device Manager in Windows 10, type device
manager in the taskbar search box, and then select Device
Manager from the list of applications.
Network controller is disabled. 1. Run Computer Setup and enable network controller.
2. Enable the network controller in the operating system using
Device Manager.
To access Device Manager in Windows 7, click Start, select
Control Panel, and then select Device Manager.
To access Device Manager in Windows 8.1, from the Start
screen, type c, select Control Panel from the list of
applications, and then select Device Manager.
To access Device Manager in Windows 10, type device
manager in the taskbar search box, and then select Device
Manager from the list of applications.
Network driver is not properly loaded. Reinstall network drivers.
System cannot autosense the network. Disable auto-sensing capabilities and force the system into the
correct operating mode.
Diagnostics reports a failure.
Cause Solution
The cable is not securely connected. Ensure that the cable is securely attached to the network connector
and that the other end of the cable is securely attached to the
correct device.
The cable is attached to the incorrect connector. Ensure that the cable is attached to the correct connector.
There is a problem with the cable or a device at the other end of the
cable.
Ensure that the cable and device at the other end are operating
correctly.
The network controller is defective. Contact an authorized service provider.
Diagnostics passes, but the computer does not communicate with the network.
Cause Solution
Network drivers are not loaded, or driver parameters do not match
current conguration.
Make sure the network drivers are loaded and that the driver
parameters match the conguration of the network controller.
Solving Network Problems 93
Table 6-2 Solving Network Problems (continued)
Diagnostics passes, but the computer does not communicate with the network.
Cause Solution
Make sure the correct network client and protocol is installed.
The network controller is not congured for this computer. Select the Network and Sharing Center icon in the Control Panel and
congure the network controller.
To access Control Panel in Windows 7, click Start, and then select
Control Panel.
To access Control Panel in Windows 8.1, from the Start screen, type
c, and then select Control Panel.
To access Control Panel in Windows 10, type control panel in
the taskbar search box, and then select Control Panel from the list
of applications.
Network controller stopped working when an expansion board was added to the computer.
Cause Solution
The network controller requires drivers. Verify that the drivers were not accidentally deleted when the
drivers for a new expansion board were installed.
Network controller stops working without apparent cause.
Cause Solution
The les containing the network drivers are corrupted. Reinstall the network drivers using the Recovery Disc Set in
Windows 7 or Windows recovery tools in Windows 8.1.
If necessary, download the softpaq from the web (from a dierent
computer).
The cable is not securely connected. Ensure that the cable is securely attached to the network connector
and that the other end of the cable is securely attached to the
correct device.
The network controller is defective. Contact an authorized service provider.
New network card will not boot.
Cause Solution
New network card may be defective or may not meet industry-
standard specications.
Install a working, industry-standard NIC, or change the boot
sequence to boot from another source.
Cannot connect to network server when attempting Remote System Installation.
Cause Solution
The network controller is not congured properly. Verify Network Connectivity, that a DHCP Server is present, and that
the Remote System Installation Server contains the NIC drivers for
your NIC.
94 Chapter 6 Troubleshooting without diagnostics
System setup utility reports unprogrammed EEPROM.
Cause Solution
Unprogrammed EEPROM. Contact an authorized service provider.
Solving memory problems
If you encounter memory problems, some common causes and solutions are listed in the following table.
CAUTION: Power may still be supplied to the DIMMs when the computer is turned o (depending on the
Management Engine (ME) settings). To avoid damage to the DIMMs or the system board, you must unplug the
computer power cord before attempting to reseat, install, or remove a memory module.
For those systems that support ECC memory, HP does not support mixing ECC and non-ECC memory. Otherwise,
the computer will not boot the operating system.
NOTE: The memory count will be aected by congurations with the Management Engine (ME) enabled. The
ME uses 8MB of system memory in single channel mode or 16MB of memory in dual-channel mode to
download, decompress, and execute the ME rmware for Out-of-Band (OOB), third-party data storage, and other
management functions.
System will not boot or does not function properly after installing additional memory modules.
Cause Solution
A memory module is not installed in the DIMM1 or XMM1 socket. Ensure that a memory module is installed in the DIMM1 or XMM1
socket on the system board. This socket must be populated with a
memory module.
Memory module is not the correct type or speed grade for the
system or the new memory module is not seated properly.
Replace module with the correct industry-standard device for the
computer. On some models, ECC and non-ECC memory modules
cannot be mixed.
Out of memory error.
Cause Solution
You have run out of memory to run the application. Check the application documentation to determine the memory
requirements.
Memory count during POST is wrong.
Cause Solution
The memory modules may not be installed correctly. Check that the memory modules have been installed correctly and
that proper modules are used.
Integrated graphics may use system memory. No action required.
Solving memory problems 95
Insucient memory error during operation.
Cause Solution
Too many Terminate and Stay Resident programs (TSRs) are
installed.
Delete any TSRs that you do not need.
You have run out of memory for the application. Check the memory requirements for the application or add more
memory to the computer.
Power LED ashes Red ve times, once every second, followed by a two second pause, and the computer beeps ve times. (Beeps stop
after fth iteration but LEDs continue ashing.)
Cause Solution
Memory is installed incorrectly or is bad. 1. Reseat DIMMs. Power on the system.
2. Replace DIMMs one at a time to isolate the faulty module.
3. Replace third-party memory with HP memory.
4. Replace the system board.
Solving CD-ROM and DVD problems
If you encounter CD-ROM or DVD problems, see the common causes and solutions listed in the following table or
to the documentation that came with the optional device.
System will not boot from CD-ROM or DVD drive.
Cause Solution
The device is attached to a SATA port that has been hidden in the
Computer Setup utility.
Run the Computer Setup utility and ensure Device Available is
selected for the device's SATA port in Advanced > Port Options.
Removable Media Boot is disabled in the Computer Setup utility. Run the Computer Setup utility and enable booting to removable
media in Advanced > Boot Options.
Network Boot is enabled in Computer Setup. Run the Computer Setup utility and disable Network Boot in
Advanced > Boot Options.
Non-bootable CD in drive. Try a bootable CD in the drive.
Boot order not correct. Run the Computer Setup utility and change boot sequence in
Advanced > Boot Options.
Drive not found (identied).
Cause Solution
Cable could be loose. Check cable connections.
The system may not have automatically recognized a newly
installed device.
See reconguration directions in the Solving Hardware Installation
Problems on page 90 section. If the system still does not recognize
the new device, check to see if the device is listed within Computer
Setup. If it is listed, the probable cause is a driver problem. If it is not
listed, the probable cause is a hardware problem.
96 Chapter 6 Troubleshooting without diagnostics
Drive not found (identied).
Cause Solution
If this is a newly installed drive, run the Computer Setup utility and
try adding a POST delay under Advanced > Power-On Options.
The device is attached to a SATA port that has been hidden in
Computer Setup.
Run the Computer Setup utility and ensure Device Available is
selected for the device's SATA port in Advanced > Port Options.
Drive responds slowly immediately after power-up. Run Computer Setup and increase the POST Delay in Advanced >
Power-On Options.
CD-ROM or DVD devices are not detected or driver is not loaded.
Cause Solution
Drive is not connected properly or not properly congured. See the documentation that came with the optional device.
Movie will not play in the DVD drive.
Cause Solution
Movie may be regionalized for a dierent country. See the documentation that came with the DVD drive.
Decoder software is not installed. Install decoder software.
Damaged media. Replace media.
Movie rating locked out by parental lock. Use DVD software to remove parental lock.
Media installed upside down. Reinstall media.
Cannot eject compact disc (tray-load unit).
Cause Solution
Disc not properly seated in the drive. Turn o the computer and insert a thin metal rod into the
emergency eject hole and push rmly. Slowly pull the tray out from
the drive until the tray is fully extended, then remove the disc.
CD-ROM, CD-RW, DVD-ROM, or DVD-R/RW drive cannot read a disc or takes too long to start.
Cause Solution
Media is corrupt. Try dierent media to conrm whether media is valid.
Media has been inserted upside down. Re-insert the media with the label facing up.
The DVD-ROM drive takes longer to start because it has to
determine the type of media played, such as audio or video.
Wait at least 30 seconds to let the DVD-ROM drive determine the
type of media being played. If the disc still does not start, read the
other solutions listed for this topic.
CD or DVD disc is dirty. Clean CD or DVD with a CD cleaning kit, available from most
computer stores.
Windows does not detect the CD-ROM or DVD-ROM drive. 1. Use Device Manager to remove or uninstall the device.
Solving CD-ROM and DVD problems 97
CD-ROM, CD-RW, DVD-ROM, or DVD-R/RW drive cannot read a disc or takes too long to start.
Cause Solution
To access Device Manager in Windows 7, click Start, select
Control Panel, and then select Device Manager.
To access Device Manager in Windows 8.1, from the Start
screen, type c, select Control Panel from the list of
applications, and then select Device Manager.
To access Device Manager in Windows 10, type device
manager in the taskbar search box, and then select Device
Manager from the list of applications.
2. Restart the computer and let Windows detect the CD or DVD
driver.
Recording or copying CDs is dicult or impossible.
Cause Solution
Wrong or poor quality media type. 1. Try using a slower speed when recording.
2. Verify that you are using the correct media for the drive.
3. Try a dierent brand of media. Quality varies widely between
manufacturers.
98 Chapter 6 Troubleshooting without diagnostics
Solving USB ash drive problems
If you encounter USB ash drive problems, common causes and solutions are listed in the following table.
USB ash drive is not seen as a drive letter in Windows.
Cause Solution
The drive letter after the last physical drive is not available. Change the default drive letter for the ash drive in Windows.
USB ash drive not found (identied).
Cause Solution
The device is attached to a USB port that has been hidden in
Computer Setup.
Run the Computer Setup utility and enable USB ports in Advanced >
Port Options.
The device was not properly seated before power-up. Ensure the device is fully inserted into the USB port before applying
power to the system
System will not boot from USB ash drive.
Cause Solution
Boot order is not correct. Run the Computer Setup utility and change boot sequence in
Advanced > Boot Options.
Removable Media Boot is disabled in the Computer Setup utility. Run the Computer Setup utility and enable booting to removable
media in Advanced > Boot Options. Ensure USB is enabled in
Storage > Boot Order.
The computer boots to DOS after making a bootable ash drive.
Cause Solution
Flash drive is bootable. Install the ash drive only after the operating system boots.
Flash drive is defective. Try a dierent ash drive.
Solving USB ash drive problems 99
Solving front panel component problems
If you encounter problems with devices connected to the front panel, refer to the common causes and solutions
listed in the following table.
A USB device, headphone, or microphone is not recognized by the computer.
Cause Solution
Device is not properly connected. 1. Turn o the computer.
2. Reconnect the device to the front of the computer and restart
the computer.
The device does not have power. If the USB device requires AC power, be sure one end is connected
to the device and one end is connected to a live outlet.
The correct device driver is not installed. 1. Install the correct driver for the device.
2. You might need to reboot the computer.
The cable from the device to the computer does not work. 1. If possible, replace the cable.
2. Restart the computer.
The device is not working. 1. Replace the device.
2. Restart the computer.
USB ports on the computer are disabled in Computer Setup. Run the Computer Setup utility and ensure that the USB ports are
set to Enabled in Security > USB Security.
Solving Internet access problems
If you encounter Internet access problems, consult your Internet Service Provider (ISP) or refer to the common
causes and solutions listed in the following table.
Unable to connect to the Internet.
Cause Solution
Internet Service Provider (ISP) account is not set up properly. Verify Internet settings or contact your ISP for assistance.
Web browser is not set up properly. Verify that the Web browser is installed and set up to work with
your ISP.
Cable/DSL modem is not plugged in. Plug in cable/DSL modem. You should see a “power” LED light on
the front of the cable/DSL modem.
Cable/DSL service is not available or has been interrupted due to
bad weather.
Try connecting to the Internet at a later time or contact your ISP. (If
the cable/DSL service is connected, the “cable” LED light on the
front of the cable/DSL modem will be on.)
The CAT5 UTP cable is disconnected. Connect the CAT5 UTP cable between the cable modem and the
computers’s RJ-45 connector. (If the connection is good, the “PC”
LED light on the front of the cable/DSL modem will be on.)
IP address is not congured properly. Contact your ISP for the correct IP address.
Cookies are corrupted. (A “cookie” is a small piece of information
that a Web server can store temporarily with the Web browser. This
is useful for having the browser remember some specic
information that the Web server can later retrieve.)
Windows 7:
1. Select Start > Control Panel.
2. Click Internet Options.
100 Chapter 6 Troubleshooting without diagnostics
Unable to connect to the Internet.
Cause Solution
3. In the Browsing history section on the General tab, click the
Delete button.
4. Select the Cookies check box and click the Delete button.
Windows 8.1:
1. From the Start screen, type c, and then select Control Panel
from the list of applications.
2. Click Internet Options.
3. In the Browsing history section on the General tab, click the
Delete button.
4. Select the Cookies check box and click the Delete button.
Windows 10:
1. Type control panel in the taskbar search box, and then
select Control Panel from the list of applications.
2. Click Internet Options.
3. In the Browsing history section, click the Delete button.
4. Select the Cookies and website data check box and click the
Delete button.
Cannot automatically launch Internet programs.
Cause Solution
You must log on to your ISP before some programs will start. Log on to your ISP and launch the desired program.
Solving Internet access problems 101
Solving software problems
Most software problems occur as a result of the following:
●The application was not installed or congured correctly.
●There is insucient memory available to run the application.
●There is a conict between applications.
●Be sure that all the needed device drivers have been installed.
●If you have installed an operating system other than the factory-installed operating system, check to be
sure it is supported on the system.
If you encounter software problems, see the applicable solutions listed in the following table.
Computer will not continue and the HP logo does not display.
Cause Solution
ROM issue - POST error has occurred. Observe the beeps and LED lights on the front of the computer. See
POST error messages and diagnostic front panel LEDs and
audible codes on page 103 to determine possible causes.
See the Worldwide Limited Warranty for terms and conditions.
“Illegal Operation has Occurred” error message is displayed.
Cause Solution
Software being used is not Microsoft-certied for your version of
Windows.
Verify that the software is certied by Microsoft for your version of
Windows (see program packaging for this information).
Conguration les are corrupt. If possible, save all data, close all programs, and restart the
computer.
102 Chapter 6 Troubleshooting without diagnostics
7 POST error messages and diagnostic front
panel LEDs and audible codes
This appendix lists the error codes, error messages, and the various indicator light and audible sequences that
you may encounter during Power-On Self-Test (POST) or computer restart, the probable source of the problem,
and steps you can take to resolve the error condition.
POST Message Disabled suppresses most system messages during POST, such as memory count and non-error
text messages. If a POST error occurs, the screen will display the error message. To manually switch to the POST
Messages Enabled mode during POST, press any key (except F10, F11, or F12). The default mode is POST
Message Disabled.
The speed at which the computer loads the operating system and the extent to which it is tested are determined
by the POST mode selection.
Quick Boot is a fast startup process that does not run all of the system level tests, such as the memory test. Full
Boot runs all of the ROM-based system tests and takes longer to complete.
Full Boot may also be enabled to run every 1 to 30 days on a regularly scheduled basis. To establish the
schedule, recongure the computer to the Full Boot Every x Days mode, using Computer Setup.
NOTE: For more information on Computer Setup, see Computer Setup (F10) Utility on page 58.
POST numeric codes and text messages
This section covers those POST errors that have numeric codes associated with them. The section also includes
some text messages that may be encountered during POST.
NOTE: The computer will beep once after a POST text message is displayed on the screen.
Control panel message Description Recommended action
002-Option ROM Checksum Error System ROM or expansion board option ROM
checksum.
1. Verify the correct ROM.
2. Flash the ROM if needed.
3. If an expansion board was recently added,
remove it to see if the problem remains.
4. Clear CMOS. (See Password security and
resetting CMOS on page 110.)
5. If the message disappears, there may be a
problem with the expansion card.
6. Replace the system board.
003-System Board Failure DMA or timers. 1. Clear CMOS. (See Password security and
resetting CMOS on page 110.)
2. Remove expansion boards.
3. Replace the system board.
005-Real-Time Clock Power Loss Invalid time or date in conguration memory. Reset the date and time under Control Panel
(Computer Setup can also be used). If the
POST numeric codes and text messages 103
Control panel message Description Recommended action
RTC (real-time clock) battery may need to
be replaced.
problem persists, replace the RTC battery. See
the Removal and Replacement section for
instructions on installing a new battery.
008–Microcode Patch Error Processor is not supported by the BIOS. 1. Upgrade BIOS to proper version.
2. Change the processor.
009–PMM Allocation Error during MEBx
Download
Memory error during POST execution of the
Management Engine (ME) BIOS Extensions option
ROM.
1. Reboot the computer.
2. Unplug the power cord, re-seat the
memory modules, and reboot the
computer.
3. If the memory conguration was recently
changed, unplug the computer, restore the
original memory conguration, and reboot
the computer.
4. If the error persists, replace the system
board.
00A-Product Information Not Valid The product information programmed into the
system board is missing or invalid.
Use Computer Setup to update this information.
00B-MEBx Module did not checksum correctly Memory error during POST execution of the
Management Engine (ME) BIOS Extensions option
ROM.
1. Reboot the computer.
2. Unplug the power cord, re-seat the
memory modules, and reboot the
computer.
3. If the memory conguration was recently
changed, unplug the power cord, restore
the original memory conguration, and
reboot the computer.
4. If the error persists, replace the system
board.
00C-PMM Deallocation Error during MEBx
Cleanup
Memory error during POST execution of the
Management Engine (ME) BIOS Extensions option
ROM.
1. Reboot the computer.
2. Unplug the power cord, re-seat the
memory modules, and reboot the
computer.
3. If the memory conguration was recently
changed, unplug the power cord, restore
the original memory conguration, and
reboot the computer.
4. If the error persists, replace the system
board.
00D-Setup Error during MEBx Execution MEBx selection or exit resulted in a setup failure. 1. Reboot the computer.
2. Unplug the power cord, re-seat the
memory modules, and reboot the
computer.
3. If the memory conguration was recently
changed, unplug the power cord, restore
the original memory conguration, and
reboot the computer.
4. If the error persists, replace the system
board.
104 Chapter 7 POST error messages and diagnostic front panel LEDs and audible codes
Control panel message Description Recommended action
00E-Inventory Error during MEBx Execution BIOS information passed to the MEBx resulted in
a failure.
1. Reboot the computer.
2. If the error persists, update to the latest
BIOS version.
3. If the error still persists, replace the system
board.
00F-Interface Error during MEBx Execution MEBx operation experienced a hardware error
during communication with the ME.
1. Reboot the computer.
2. If the error persists, update to the latest
BIOS version.
3. If the error still persists, replace the system
board.
100-Front Audio Not Connected Front audio cable has been detached or
unseated from system board.
Reconnect or replace front audio cable.
2E1-MemorySize Error Memory amount has changed since the last boot
(memory added or removed).
The system memory size is dierent from the
last startup. The most common reason is the
removal of memory from the system board.
Press the F1 key to save the memory changes. If
this message persists, verify that the memory
modules are installed correctly.
2E2-Memory Error Memory module conguration failed during boot
up.
1. Ensure memory modules are correctly
installed.
2. Verify proper memory module type.
3. Remove and replace the identied faulty
memory module(s).
4. If the error persists after replacing memory
modules, replace the system board.
2E3-Incompatible Memory Module in Memory
Socket(s) X, X, ...
A memory module in memory socket identied in
the error message is missing critical SPD
information, or is incompatible with the chipset.
1. Verify proper memory module type.
2. Try another memory socket.
3. Replace with a supported module.
2E4-DIMM Conguration Warning The current memory conguration is not
optimized.
Rearrange the DIMMs so that each channel has
the same amount of memory.
2E5-ECC Memory Module Detected on
Unsupported Platform
Recently added memory module(s) support ECC
memory error correction.
1. If additional memory was recently added,
remove it to see if the problem remains.
2. Check product documentation for memory
support information.
2E6–Memory Not Congured Correctly for Proper
MEBx Execution
DIMM1 is not installed. Make sure there is a memory module in the
DIMM1 socket and that it is properly seated.
300–Conguration Change Warning The storage device conguration will be updated
as shown.
Not applicable
301-Hard Disk 1: SMART Hard Drive Detects
Imminent Failure
Hard drive is about to fail. (Some hard drives
have a hard drive rmware patch that will x an
erroneous error message.)
1. Determine if hard drive is giving correct
error message. Run the Drive Protection
System test under using F2 Diagnostics
when booting the computer.
2. Apply hard drive rmware patch
if applicable. (Available at
http://www.hp.com/support.)
3. Back up contents and replace hard drive.
POST numeric codes and text messages 105
Control panel message Description Recommended action
302-Hard Disk 2: SMART Hard Drive Detects
Imminent Failure
Hard drive is about to fail. (Some hard drives
have a hard drive rmware patch that will x an
erroneous error message.)
1. Determine if hard drive is giving correct
error message. Run the Drive Protection
System test under using F2 Diagnostics
when booting the computer.
2. Apply hard drive rmware patch
if applicable. (Available at
http://www.hp.com/support.)
3. Back up contents and replace hard drive.
309 – 30C: Hard Disk 3–6: SMART Hard Drive
Detects Imminent Failure
Hard drive is about to fail. (Some hard drives
have a hard drive rmware patch that will x an
erroneous error message.)
1. Determine if hard drive is giving correct
error message. Run the Drive Protection
System test under using F2 Diagnostics
when booting the computer.
2. Apply hard drive rmware patch
if applicable. (Available at
http://www.hp.com/support.)
3. Back up contents and replace hard drive.
3F0–Boot Device Not Found Boot device not found. Insert boot device or load operating system.
3F1–Hard Disk 1 Error Hard disk 1 error. 1. Check and/or replace cables.
2. Clear CMOS. (See Password security and
resetting CMOS on page 110.)
3. Replace the hard disk drive.
3F2–Hard Disk 2 Error Hard disk 2 error. 1. Check and/or replace cables.
2. Clear CMOS. (See Password security and
resetting CMOS on page 110.)
3. Replace the hard disk drive.
400-Serial Port A Address Conict Detected Both external and internal serial ports are
assigned to the same resources.
1. Remove any serial port expansion cards.
2. Clear CMOS. (See Password security and
resetting CMOS on page 110.)
3. Recongure card resources and/or run
Computer Setup or Windows utilities.
401-Serial Port B Address Conict Detected Both external and internal serial ports are
assigned to the same resources.
1. Remove any serial port expansion cards.
2. Clear CMOS. (See Password security and
resetting CMOS on page 110.)
3. Recongure card resources and/or run
Computer Setup or Windows utilities.
402-Serial Port C Address Conict Detected Both external and internal serial ports are
assigned to the same resources.
1. Remove any serial port expansion cards.
2. Clear CMOS. (See Password security and
resetting CMOS on page 110.)
3. Recongure card resources and/or run
Computer Setup or Windows utilities.
403-Serial Port D Address Conict Detected Both external and internal serial ports are
assigned to the same resources.
1. Remove any serial port expansion cards.
2. Clear CMOS. (See Password security and
resetting CMOS on page 110.)
3. Recongure card resources and/or run
Computer Setup or Windows utilities.
106 Chapter 7 POST error messages and diagnostic front panel LEDs and audible codes
Control panel message Description Recommended action
419-Out of Memory Space for Option ROMs Recently added PCI expansion card contains an
option ROM too large to download during POST.
▲If a PCI expansion card was recently added,
remove it to see if the problem remains.
41A-Front USB1/USB2 Not Connected Front USB cable has been detached or unseated
from system board.
Reconnect or replace front USB cable.
41B-Device in PCI Express Slot Failed To Initialize There is an incompatibility or problem with a
PCIe device and the system or PCIe link could not
be congured to a valid bus width or speed.
Try rebooting the system. If the error reoccurs,
the device may not work with this system
43A-USB Type-C I2C Not Connected Cable is required between I2C on card and USB-C
on the system board.
Install cable between I2C on card and USB-C on
the system board.
43B-More Than One USB type-C Cards Are
Installed
More than one USB type-C card is installed. Remove USB type-C card so only one is installed.
500–BIOS Recovery A system BIOS recovery has occurred. Not applicable.
70x-Wireless Mode Not Supported The system has detected a wireless module
installed in the system that is not supported and
has been disabled.
Replace with a supported module.
800-Keyboard Error Keyboard failure. 1. Reconnect keyboard with computer turned
o.
2. Check connector for bent or missing pins.
3. Ensure that none of the keys are
depressed.
4. Replace keyboard.
801-Keyboard or System Unit Error Keyboard failure. 1. Reconnect the keyboard with computer
turned o.
2. Ensure that none of the keys are
depressed.
3. Replace the keyboard.
4. Replace the system board.
900-CPU Fan Not Detected CPU fan is not connected or may have
malfunctioned.
1. Reseat CPU fan.
2. Reseat fan cable.
3. Replace CPU fan.
901-Chassis, Rear Chassis, or Front Chassis Fan
not Detected
Chassis, rear chassis, or front chassis fan is not
connected or may have malfunctioned.
1. Reseat chassis, rear chassis, or front
chassis fan.
2. Reseat fan cable.
3. Replace chassis, rear chassis, or front
chassis fan.
903-Computer Cover Has Been Removed Since
Last System Startup
N/A
904-SATA Cabling Error One or more SATA devices are improperly
attached. For optimal performance, the SATA 0
and SATA 1 ports should be used for hard drives
before other ports.
Ensure SATA connectors are used in ascending
order. For one device, use SATA 0. For two
devices, use SATA 0 and SATA 1. For three
devices, use SATA 0, SATA 1, and SATA 2.
90B-Fan Failure The system has detected that a cooling fan is not
operating correctly.
1. Reseat fan.
2. Reseat fan cable.
POST numeric codes and text messages 107
Control panel message Description Recommended action
3. Replace fan.
90D-System Temperature Thermal shutdown occurred. The system BIOS
has detected your machine was previously shut
down to avoid overheating. Overheating may
occur if the cooling vents are blocked or the
operating temperature exceeds the system
specications. The machine should return to
normal operation once the situation is resolved.
Make sure system has proper airow.
90E-Power Supply Fan Not detected Power supply fan is not connected or may have
malfunctioned.
1. Reseat power supply fan.
2. Reseat fan cable.
3. Replace power supply fan.
910–Filter Warning Airow lter is dirty. Replace the airow lter.
Interpreting system validation diagnostic front panel LEDs and
audible codes
During the system validation phase that occurs at system startup, the BIOS validates the functionality of the
following subsystems and conditions:
●AC adapter
●System board power
●Processor failure
●BIOS corruption
●Memory failure
●Graphics failure
●System board failure
●BIOS authentication failure
If an error is detected, specic patterns of long and short blinks, accompanied by long and short beeps (where
applicable) are used to identify the error. These patterns will make up a two part code:
●Major – the category of the error
●Minor – the specic error within the category
NOTE: Single beep/blink codes are not used.
Number of long beeps/blinks Error category
1 Not used
2 BIOS
3 Hardware
4 Thermal
5 System board
108 Chapter 7 POST error messages and diagnostic front panel LEDs and audible codes
Patterns of blink/beep codes are determined by using the following parameters:
●1 second pause occurs after the last major blink.
●2 second pause occurs after the last minor blink.
●Beep error code sequences occur for the rst 5 iterations of the pattern and then stop.
●Blink error code sequences continue until the computer is unplugged or the power button is pressed.
NOTE: Not all diagnostic lights and audible codes are available on all models.
The red LED blinks to represent the major error category (long blinks). The white LED blinks to represent the
minor error category (short blinks). For example, ‘3.5’ indicates 3 long red blinks and 5 short white blinks to
communicate the processor is not detected.
Category Major/minor code Description
BIOS 2.2 The main area (DXE) of BIOS has become corrupted and there is no recovery
binary image available.
2.3 The embedded controller policy requires the user to enter a key sequence.
2.4 The embedded controller is checking or recovering the boot block.
Hardware 3.2 The embedded controller has timed out waiting for BIOS to return from
memory initialization.
3.3 The embedded controller has timed out waiting for BIOS to return from
graphics initialization.
3.4 The system board displays a power failure (crowbar).*
3.5 The processor is not detected.*
3.6 The processor does not support an enabled feature.
Thermal 4.2 A processor over temperature condition has been detected.*
4.3 An ambient temperature over temperature condition has been detected.
4.4 An MXM over temperature condition has been detected.
System board 5.2 The embedded controller cannot nd valid rmware.
5.3 The embedded controller has timed out waiting for the BIOS.
5.4 The embedded controller has timed out waiting for BIOS to return from system
board initialization.
5.5 The embedded controller rebooted the system after a possible lockup condition
had been detected through the use of a System Health Timer, Automated
System Recovery Timer, or other mechanism.
* Indicates hardware triggered event; all other events are controlled by the BIOS.
Interpreting system validation diagnostic front panel LEDs and audible codes 109
8 Password security and resetting CMOS
This computer supports security password features, which can be established through the Computer Setup
Utilities menu.
This computer supports two security password features that are established through the Computer Setup
Utilities menu: administrator password and power-on password. When you establish only an administrator
password, any user can access all the information on the computer except Computer Setup. When you establish
only a power-on password, the power-on password is required to access Computer Setup and any other
information on the computer. When you establish both passwords, only the administrator password will give you
access to Computer Setup.
When both passwords are set, the administrator password can also be used in place of the power-on password
as an override to log in to the computer. This is a useful feature for a network administrator.
If you forget one or both passwords, you can clear all passwords by powering o the system, opening the cover,
temporarily removing the PSWD jumper, and booting once. This will erase the administrator and power-on
passwords. You must restore the jumper to create new passwords.
CAUTION: Pushing the CMOS button with power removed will reset the BIOS settings to factory defaults. It may
be useful to back up the BIOS settings or save them as custom defaults before resetting them in case they are
needed later. Back up can be performed in Computer Setup or using the BiosCongUtility tool available from
www.hp.com. See Computer Setup (F10) Utility on page 58 for information on backing up the BIOS settings.
Resetting the password jumper
CAUTION: Stringent security is a mode where there is no physical bypass of the password function. If enabled,
removing the password jumper will be ignored. To enable this mode, change the security setting Clear Password
Jumper in Password Policies to Ignore.
If you lose or forget the password when in stringent security mode, the system can only be reset by System
Management Command. This is a way for HP Service and Support to provide a secure method to access the BIOS
and command a password reset for a specically identied unit under the direction of the owner. This scenario
may not be covered under warranty.
To prevent needing a customer service event to restore access to the system, record your congured
administrator and power-on passwords in a safe place away from your computer.
To disable the power-on or administrator password features, or to clear the power-on or administrator
passwords, complete the following steps:
110 Chapter 8 Password security and resetting CMOS
1. Shut down the operating system properly, then turn o the computer and any external devices, and
disconnect the power cord from the power outlet.
2. With the power cord disconnected, press the power button again to drain the system of any residual power.
WARNING! To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to
disconnect the power cord from the wall outlet, and allow the internal system components to cool before
touching.
CAUTION: When the computer is plugged in, the power supply always has voltage applied to the system
board even when the unit is turned o. Failure to disconnect the power cord can result in damage to the
system.
Static electricity can damage the electronic components of the computer or optional equipment. Before
beginning these procedures, ensure that you are discharged of static electricity by briey touching a
grounded metal object. See the Safety & Regulatory Information guide for more information.
3. Remove the access panel.
4. Locate the header and jumper.
NOTE: The password jumper is green so that it can be easily identied. For assistance locating the
password jumper and other system board components, see the system board components image at
System board on page 49.
5. Remove the jumper from pins 1 and 2.
6. Place the jumper on either pin 1 or 2, but not both, so that it does not get lost.
7. Replace the access panel and reconnect the external equipment.
8. Plug in the computer and turn on power. Allow the operating system to start. This clears the current
passwords and disables the password features.
9. Shut down the computer, unplug the power, and disconnect the external equipment.
10. Remove the access panel.
11. Place the jumper on pins 1 and 2.
12. Replace the access panel.
13. Reconnect the external equipment and plug in the computer.
Resetting the password jumper 111
Clearing and resetting the BIOS
The CMOS button resets BIOS settings to default, but does not clear the passwords or aect any of the other
Security settings. On Intel systems with advanced manageability features, the CMOS button will also partially
unprovision AMT.
1. Turn o the computer and any external devices, and disconnect the power cord from the power outlet.
2. Disconnect the keyboard, monitor, and any other external equipment connected to the computer.
WARNING! To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to
disconnect the power cord from the wall outlet, and allow the internal system components to cool before
touching.
CAUTION: When the computer is plugged in, the power supply always has voltage applied to the system
board even when the unit is turned o. Failure to disconnect the power cord can result in damage to the
system.
Static electricity can damage the electronic components of the computer or optional equipment. Before
beginning these procedures, ensure that you are discharged of static electricity by briey touching a
grounded metal object. See the Safety & Regulatory Information guide for more information.
3. Remove the access panel.
CAUTION: Pushing the CMOS button will reset CMOS values to factory defaults. It is important to back up
the computer CMOS settings before resetting them in case they are needed later. Back up is easily done
through Computer Setup. See Computer Setup (F10) Utility on page 58 for information on backing up the
CMOS settings.
4. Locate, press, and hold the CMOS button in for ve seconds.
NOTE: Make sure you have disconnected the AC power cord from the wall outlet. The CMOS button will
not clear CMOS if the power cord is connected.
NOTE: For assistance locating the CMOS button and other system board components, see the system
board components image at System board on page 49.
5. Replace the access panel.
6. Reconnect the external devices.
7. Plug in the computer and turn on power.
112 Chapter 8 Password security and resetting CMOS
NOTE: You will receive POST error messages after clearing CMOS and rebooting advising you that
conguration changes have occurred. Use Computer Setup to reset any special system setups along with
the date and time.
For instructions on Computer Setup, see Computer Setup (F10) Utility on page 58.
Clearing and resetting the BIOS 113
9 Using HP PC Hardware Diagnostics (UEFI)HP PC
Hardware Diagnostics
HP PC Hardware Diagnostics is a Unied Extensible Firmware Interface (UEFI) that allows you to run diagnostic
tests to determine whether the computer hardware is functioning properly. The tool runs outside the operating
system so that it can isolate hardware failures from issues that are caused by the operating system or other
software components.
When HP PC Hardware Diagnostics (UEFI) detects a failure that requires hardware replacement, a 24-digit Failure
ID is generated. This ID can then be provided to support to help determine how to correct the problem.
To start HP PC Hardware Diagnostics (UEFI), follow these steps:
1. Turn on or restart the computer, and quickly press esc
2. Press F2.
The BIOS searches three places for the diagnostic tools, in the following order:
a. Connected USB drive
NOTE: To download the HP PC Hardware Diagnostics (UEFI) tool to a USB drive, see Downloading HP
PC Hardware Diagnostics (UEFI) to a USB device on page 114.
b. Hard drive
c. BIOS
3. When the diagnostic tool opens, select the type of diagnostic test you want to run, and then follow the on-
screen instructions.
NOTE: If you need to stop a diagnostic test, press esc.
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device
NOTE: The HP PC Hardware Diagnostics (UEFI) download instructions are provided in English only, and you
must use a Windows computer to download and create the HP UEFI support environment because only .exe les
are oered.
There are two options to download HP PC Hardward Diagnostics to USB device.
Download the latest UEFI version
1. Go to http://www.hp.com/go/techcenter/pcdiags. The HP PC Diagnostics home page is displayed.
2. In the HP PC Hardware Diagnostics section, click the Dowload link, and then select Run.
Download any version of UEFI for a specic product
1. Go to http://www.hp.com/support, and then select your country. The HP Support page is displayed. .
2. Click Drivers & Downloads.
3. Use the categories listed to nd your product.
– or –
114 Chapter 9 Using HP PC Hardware Diagnostics (UEFI)HP PC Hardware Diagnostics
Click Find Now to let HP automatically detect your product.
4. Select your computer, and then select your operating system.
5. In the Diagnostic section, follow the on-screen instructions to select and download the UEFI version you
want.
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device 115
10 System backup and recovery
Backing up, restoring, and recovering in Windows 10
This section provides information about the following processes. The information in the section is standard
procedure for most products.
●Creating recovery media and backups
●Restoring and recovering your system
For additional information, refer to Help and Support.
▲Type help in the taskbar search box, and then select Help and Support.
Creating recovery media and backups
The following methods of creating recovery media and backups are available on select products only. Choose
the available method according to your computer model.
●Use HP Recovery Manager to create HP Recovery media after you successfully set up the computer. This
step creates a backup of the HP Recovery partition on the computer. The backup can be used to reinstall
the original operating system in cases where the hard drive is corrupted or has been replaced. For
information on creating recovery media, see Creating HP Recovery media (select products only)
on page 116. For information on the recovery options that are available using the recovery media, see
What you need to know before you get started on page 118.
●Use Windows tools to create system restore points and create backups of personal information.
For more information, see Using Windows tools on page 118.
NOTE: If storage is 32 GB or less, Microsoft System Restore is disabled by default.
Creating HP Recovery media (select products only)
If possible, check for the presence of the Recovery partition and the Windows partition. From the Start menu,
select File Explorer.
●If your computer does not list the Windows partition and the Recovery partition, you can obtain recovery
media for your system from support. See the Worldwide Telephone Numbers booklet included with the
computer. You can also nd contact information on the HP website. Go to http://www.hp.com/support,
select your country or region, and follow the on-screen instructions.
You can use Windows tools to create system restore points and create backups of personal information,
see Using Windows tools on page 118.
●If your computer does list the Recovery partition and the Windows partition, you can use HP Recovery
Manager to create recovery media after you successfully set up the computer. HP Recovery media can be
used to perform system recovery if the hard drive becomes corrupted. System recovery reinstalls the
original operating system and software programs that were installed at the factory and then congures the
settings for the programs. HP Recovery media can also be used to customize the system or restore the
factory image if you replace the hard drive.
116 Chapter 10 System backup and recovery
○Only one set of recovery media can be created. Handle these recovery tools carefully, and keep them
in a safe place.
○HP Recovery Manager examines the computer and determines the required storage capacity for the
media that will be required.
○To create recovery discs, your computer must have an optical drive with DVD writer capability, and
you must use only high-quality blank DVD-R, DVD+R, DVD-R DL, or DVD+R DL discs. Do not use
rewritable discs such as CD±RW, DVD±RW, double-layer DVD±RW, or BD-RE (rewritable Blu-ray) discs;
they are not compatible with HP Recovery Manager software. Or, instead, you can use a high-quality
blank USB ash drive.
○If your computer does not include an integrated optical drive with DVD writer capability, but you
would like to create DVD recovery media, you can use an external optical drive (purchased separately)
to create recovery discs. If you use an external optical drive, it must be connected directly to a USB
port on the computer; the drive cannot be connected to a USB port on an external device, such as a
USB hub. If you cannot create DVD media yourself, you can obtain recovery discs for your computer
from HP. See the Worldwide Telephone Numbers booklet included with the computer. You can also nd
contact information on the HP website. Go to http://www.hp.com/support, select your country or
region, and follow the on-screen instructions.
○Be sure that the computer is connected to AC power before you begin creating the recovery media.
○The creation process can take an hour or more. Do not interrupt the creation process.
○If necessary, you can exit the program before you have nished creating all of the recovery DVDs. HP
Recovery Manager will nish burning the current DVD. The next time you start HP Recovery Manager,
you will be prompted to continue.
To create HP Recovery media:
1. Type recovery in the taskbar search box, and then select HP Recovery Manager.
2. Select Create recovery media, and then follow the on-screen instructions.
If you ever need to recover the system, see Recovering using HP Recovery Manager on page 118.
Backing up, restoring, and recovering in Windows 10 117
Using Windows tools
You can create recovery media, system restore points, and backups of personal information using Windows
tools.
NOTE: If storage is 32 GB or less, Microsoft System Restore is disabled by default.
For more information and steps, see Help and Support.
▲Type help in the taskbar search box, and then select Help and Support.
Restore and recovery
There are several options for recovering your system. Choose the method that best matches your situation and
level of expertise:
IMPORTANT: Not all methods are available on all products.
●Windows oers several options for restoring from backup, refreshing the computer, and resetting the
computer to its original state. For more information see Help and Support.
▲Type help in the taskbar search box, and then select Help and Support.
●If you need to correct a problem with a preinstalled application or driver, use the Reinstall drivers and/ or
applications option (select products only) of HP Recovery Manager to reinstall the individual application or
driver.
▲Type recovery in the taskbar search box, select HP Recovery Manager, select Reinstall drivers
and/or applications, and then follow the on-screen instructions.
●If you want to recover the Windows partition to original factory content, you can choose the System
Recovery option from the HP Recovery partition (select products only) or use the HP Recovery media. For
more information, see Recovering using HP Recovery Manager on page 118. If you have not already
created recovery media, see Creating HP Recovery media (select products only) on page 116.
●On select products, if you want to recover the computer's original factory partition and content, or if you
have replaced the hard drive, you can use the Factory Reset option of HP Recovery media. For more
information, see Recovering using HP Recovery Manager on page 118.
●On select products, if you want to remove the recovery partition to reclaim hard drive space, HP Recovery
Manager oers the Remove Recovery Partition option.
For more information, see Removing the HP Recovery partition (select products only) on page 120.
Recovering using HP Recovery Manager
HP Recovery Manager software allows you to recover the computer to its original factory state by using the HP
Recovery media that you either created or that you obtained from HP, or by using the HP Recovery partition
(select products only). If you have not already created recovery media, see Creating HP Recovery media (select
products only) on page 116.
What you need to know before you get started
●HP Recovery Manager recovers only software that was installed at the factory. For software not provided
with this computer, you must either download the software from the manufacturer's website or reinstall
the software from the media provided by the manufacturer.
118 Chapter 10 System backup and recovery
IMPORTANT: Recovery through HP Recovery Manager should be used as a nal attempt to correct
computer issues.
●HP Recovery media must be used if the computer hard drive fails. If you have not already created recovery
media, see Creating HP Recovery media (select products only) on page 116.
●To use the Factory Reset option (select products only), you must use HP Recovery media. If you have not
already created recovery media, see Creating HP Recovery media (select products only) on page 116.
●If your computer does not allow the creation of HP Recovery media or if the HP Recovery media does not
work, you can obtain recovery media for your system from support. See the Worldwide Telephone Numbers
booklet included with the computer. You can also nd contact information from the HP website. Go to
http://www.hp.com/support, select your country or region, and follow the on-screen instructions.
IMPORTANT: HP Recovery Manager does not automatically provide backups of your personal data. Before
beginning recovery, back up any personal data you want to retain.
Using HP Recovery media, you can choose from one of the following recovery options:
NOTE: Only the options available for your computer display when you start the recovery process.
●System Recovery—Reinstalls the original operating system, and then congures the settings for the
programs that were installed at the factory.
●Factory Reset—Restores the computer to its original factory state by deleting all information from the hard
drive and re-creating the partitions. Then it reinstalls the operating system and the software that was
installed at the factory.
The HP Recovery partition (select products only) allows System Recovery only.
Using the HP Recovery partition (select products only)
The HP Recovery partition allows you to perform a system recovery without the need for recovery discs or a
recovery USB ash drive. This type of recovery can be used only if the hard drive is still working.
To start HP Recovery Manager from the HP Recovery partition:
1. Type recovery in the taskbar search box, select Recovery Manager, and then select HP Recovery
Environment.
- or -
Press f11 while the computer boots, or press and hold f11 as you press the power button.
2. Select Troubleshoot from the boot options menu.
3. Select Recovery Manager, and then follow the on-screen instructions.
Using HP Recovery media to recover
You can use HP Recovery media to recover the original system. This method can be used if your system does not
have an HP Recovery partition or if the hard drive is not working properly.
1. If possible, back up all personal les.
2. Insert the HP Recovery media, and then restart the computer.
NOTE: If the computer does not automatically restart in HP Recovery Manager, change the computer boot
order. See Changing the computer boot order on page 120.
3. Follow the on-screen instructions.
Backing up, restoring, and recovering in Windows 10 119
Changing the computer boot order
If your computer does not restart in HP Recovery Manager, you can change the computer boot order, which is
the order of devices listed in BIOS where the computer looks for startup information. You can change the
selection to an optical drive or a USB ash drive.
To change the boot order:
1. Insert the HP Recovery media.
2. Access BIOS.
Restart the computer, quickly press esc, and then press f9 for boot options.
3. Select the optical drive or USB ash drive from which you want to boot.
4. Follow the on-screen instructions.
Removing the HP Recovery partition (select products only)
HP Recovery Manager software allows you to remove the HP Recovery partition to free up hard drive space.
IMPORTANT: After you remove the HP Recovery partition, you will not be able to perform System Recovery or
create HP recovery media from the HP Recovery partition. So before you remove the Recovery partition, create
HP Recovery media; see Creating HP Recovery media (select products only) on page 116.
NOTE: The Remove Recovery Partition option is only available on products that support this function.
Follow these steps to remove the HP Recovery partition:
1. Type recovery in the taskbar search box, and then select HP Recovery Manager.
2. Select Remove Recovery Partition, and then follow the on-screen instructions.
Backing up, restoring, and recovering in Windows 8.1 or Windows 8
Your computer includes tools provided by HP and Windows to help you safeguard your information and retrieve
it if you ever need to. These tools will help you return your computer to a proper working state or even back to
the original factory state, all with simple steps.
This section provides information about the following processes:
●Creating recovery media and backups
●Restoring and recovering your system
NOTE: This section describes an overview of backing up, restoring, and recovering options. For more details
about the tools provided, see Help and Support. From the Start screen, type help, and then select Help and
Support.
Creating recovery media and backups
Recovery after a system failure is only as good as your most recent backup.
1. After you successfully set up the computer, create recovery media. This step creates a backup of the
recovery partition on the computer. The backup can be used to reinstall the original operating system in
cases where the hard drive is corrupted or has been replaced.
You will use a USB ash drive to create a bootable recovery drive that can be used to troubleshoot a
computer that is unable to start. The USB ash drive can be used to reinstall the original operating system
and the programs that were installed at the factory.
120 Chapter 10 System backup and recovery
NOTE: Any information on the USB ash drive will be erased before the recovery media is created.
●To create the Windows 8.1 recovery media, from the Start screen, type recovery drive, then
click on Create a recovery drive. Follow the on-screen instructions to continue.
●To create the Windows 8 recovery media, from the Start screen, type recovery drive, and then
click on Settings, then click on Create a recovery drive. Follow the on-screen instructions to continue.
2. Use the Windows tools to create system restore points and create backups of personal information. For
more information and steps, see Help and Support. From the Start screen, type help, and then select Help
and Support.
Restoring and recovering using Windows tools
Windows oers several options for restoring from backup, refreshing the computer, and resetting the computer
to its original state. For more information and steps, see Help and Support. From the Start screen, type help,
and then select Help and Support.
Using Reset when the system is not responding
NOTE: You may be prompted by User Account Control for your permission or password when you perform
certain tasks. To continue a task, select the appropriate option. For information about User Account Control, see
Help and Support. From the Start screen, type help, and then select Help and Support.
IMPORTANT: Reset does not provide backups of your information. Before using Reset, back up any personal
information you wish to retain.
If Windows recovery steps are not working and the system is not responding, use these steps to start Reset:
1. If possible, back up all personal les.
2. If possible, check for the presence of the HP Recovery partition:
●For Windows 8.1, from the Start screen, type pc, and then select This PC.
●For Windows 8, from the Start screen, type c, and then select Computer.
NOTE: If the HP Recovery partition is not listed, or you cannot check for its presence, you must recover
using the recovery media you created; see Recovery using the Windows recovery USB ash drive
on page 121. Or you must use the Windows operating system media and the Driver Recovery media
(purchased separately); see Recovery using Windows operating system media (purchased separately)
on page 122.
3. If the HP Recovery partition is listed, restart the computer, and then press esc while the HP logo is
displayed. The computer Startup Menu displays.
4. Press f11 to select the System Recovery option.
5. Choose your keyboard layout.
6. Select Troubleshoot.
7. Select Reset.
8. Follow the on-screen instructions to continue.
Recovery using the Windows recovery USB ash drive
To recover your system using the recovery USB ash drive you previously created:
Backing up, restoring, and recovering in Windows 8.1 or Windows 8 121
NOTE: If you did not create a recovery USB ash drive or the one you created does not work, see Recovery
using Windows operating system media (purchased separately) on page 122.
1. If possible, back up all personal les.
2. Insert the recovery USB ash drive you created into a USB port on your computer.
3. Restart the computer and as soon as you see the HP logo screen, press f9 to display a list of boot devices.
Use the arrow keys to select your USB ash drive from the UEFI Boot Sources list. Press Enter to boot from
that device.
4. Choose your keyboard layout.
5. Select Troubleshoot.
6. Select Refresh your PC.
7. Follow the on-screen instructions.
Recovery using Windows operating system media (purchased separately)
To order a Windows operating system DVD, contact support. Go to http://www.hp.com/support, select your
country or region, and follow the on-screen instructions.
CAUTION: Using Windows operating system media completely erases the hard drive contents and reformats
the hard drive. All les that you have created and any software that you have installed on the computer are
permanently removed. When reformatting is complete, the recovery process helps you restore the operating
system, as well as drivers, software, and utilities.
To initiate recovery using Windows operating system media:
NOTE: This process takes several minutes.
1. If possible, back up all personal les.
2. Restart the computer, and then follow the instructions provided with the Windows operating system media
to install the operating system.
3. When prompted, press any keyboard key.
4. Follow the on-screen instructions.
After the repair is completed and the Windows desktop appears:
1. Remove the Windows operating system media, and then insert the Driver Recovery media.
2. Install the Hardware Enabling Drivers rst, and then install Recommended Applications.
Backing up, restoring, and recovering in Windows 7
Your computer includes tools provided by HP and Windows to help you safeguard your information and retrieve
it if you ever need to. These tools will help you return your computer to a proper working state or even back to
the original factory state, all with simple steps.
This section provides information about the following processes:
●Creating recovery media and backups
●Restoring and recovering your system
122 Chapter 10 System backup and recovery
NOTE: This section describes an overview of backing up, restoring, and recovering options. For more details
about the Windows Backup and Restore tools provided, see Help and Support. To access Help and Support,
select Start > Help and Support.
Recovery after a system failure is only as good as your most recent backup.
1. After you successfully set up the computer, create recovery media. This media can be used to reinstall the
original operating system in cases where the hard drive is corrupted or has been replaced. See Creating
recovery media on page 123.
2. As you add hardware and software programs, create system restore points. A system restore point is a
snapshot of certain hard drive contents saved by Windows System Restore at a specic time. A system
restore point contains information that Windows uses, such as registry settings. Windows creates a system
restore point for you automatically during a Windows update and during other system maintenance (such
as a software update, security scanning, or system diagnostics). You can also manually create a system
restore point at any time. For more information and steps for creating specic system restore points, see
Help and Support. To access Help and Support, select Start > Help and Support.
3. As you add photos, video, music, and other personal les, create a backup of your personal information. If
les are accidentally deleted from the hard drive and they can no longer be restored from the Recycle Bin,
or if les become corrupted, you can restore the les that you backed up. In case of system failure, you can
use the backup les to restore the contents of your computer. See Backing up your information
on page 125.
NOTE: HP recommends that you print the recovery procedures and save them for later use, in case of system
instability.
Creating recovery media
After you successfully set up the computer, create recovery media. The media can be used to reinstall the
original operating system in cases where the hard drive is corrupted or has been replaced.
There are two types of recovery media. To determine which steps to follow for your computer:
1. Click the Start button.
2. Click All Programs.
●If Security and Protection is listed, continue with the steps in Creating recovery media using HP
Recovery Manager (select models only) on page 123.
●If Productivity and Tools is listed, continue with the steps in Creating recovery discs with HP Recovery
Disc Creator (select models only) on page 124.
Creating recovery media using HP Recovery Manager (select models only)
●To create recovery discs, your computer must have a DVD writer. Use DVD+R or DVD-R discs (purchased
separately). The discs you use will depend on the type of optical drive you are using.
NOTE: DVD+R DL, DVD-R DL, or DVD±RW disc are not supported.
●You have the option of creating a recovery USB ash drive instead, using a high-quality USB drive.
●If you are creating recovery discs, be sure to use high-quality discs. It is normal for the system to reject
defective discs. You will be prompted to insert a new blank disc to try again.
●The number of discs in the recovery-disc set depends on your computer model (typically 3 to 6 DVDs). The
Recovery Media Creation program tells you the specic number of blank discs needed to make the set. If
Backing up, restoring, and recovering in Windows 7 123
you are using a USB ash drive, the program will tell you the size of the drive required to store all the data
(minimum of 8 GB).
NOTE: The process of creating recovery media is lengthy. You can quit the process at any time. The next
time you initiate the process, it resumes where it left o.
NOTE: Do not use media cards for creating recovery media. The system may not be able to boot up from a
media card and you may not be able to run system recovery.
To create recovery discs:
1. Close all open programs.
2. Click the Start button, click All Programs, click Security and Protection, click Recovery Manager, and then
click HP Recovery Media Creation. If prompted, click Yes to allow the program to continue.
3. Click Create recovery media using blank DVD(s), and then click Next.
4. Follow the on-screen instructions. Label each disc after you make it (for example, Recovery 1, Recovery 2),
and then store the discs in a secure place.
To create a recovery USB ash drive:
NOTE: You must use a USB ash drive with a capacity of at least 8 GB.
NOTE: Recovery Media Creation formats the USB ash drive, deleting any les on it.
1. Close all open programs.
2. Insert the USB ash drive into a USB port on the computer.
3. Click the Start button, click All Programs, click Security and Protection, click Recovery Manager, and then
click Recovery Media Creation.
4. Click Create recovery media with a USB ash drive, and then click Next.
5. Select the USB ash drive from the list of media. The program will let you know how much storage is
required to create the recovery drive. If the USB ash drive does not have enough storage capacity, it will
appear grayed out, and you must replace it with a larger USB ash drive. Click Next.
6. Follow the on-screen instructions. When the process is complete, label the USB ash drive and store it in a
secure place.
Creating recovery discs with HP Recovery Disc Creator (select models only)
HP Recovery Disc Creator is a software program that oers an alternative way to create recovery discs on select
models. After you successfully set up the computer, you can create recovery discs using HP Recovery Disc
Creator. The recovery discs allow you to reinstall your original operating system as well as select drivers and
applications if the hard drive becomes corrupted. HP Recovery Disc Creator creates two kinds of recovery discs:
●Windows 7 operating system DVD—Installs the operating system without additional drivers or
applications.
●Driver Recovery DVD—Installs specic drivers and applications only, in the same way that the HP Software
Setup utility installs drivers and applications.
To create recovery discs, your computer must have a DVD writer. Use any of the following types of discs
(purchased separately): DVD+R, DVD+R DL, DVD-R, DVD-R DL, or DVD±RW. The discs you use will depend on the
type of optical drive you are using.
124 Chapter 10 System backup and recovery
Creating recovery discs
NOTE: The Windows 7 operating system DVD can be created only once. The option to create that media will not
be available after you create a Windows DVD.
To create the Windows DVD:
1. Select Start > All Programs > Productivity and Tools > HP Recovery Disc Creator.
2. Select Windows disk.
3. From the drop-down menu, select the drive for burning the recovery media.
4. Click the Create button to start the burning process. Label the disc after you create it, and store it in a
secure place.
After the Windows 7 operating system DVD has been created, create the Driver Recovery DVD:
1. Select Start > All Programs > Productivity and Tools > HP Recovery Disc Creator.
2. Select Driver disk.
3. From the drop-down menu, select the drive for burning the recovery media.
4. Click the Create button to start the burning process. Label the disc after you create it, and store it in a
secure place.
Backing up your information
You should create your initial backup immediately after initial system setup. As you add new software and data
les, you should continue to back up your system on a regular basis to maintain a reasonably current backup.
Your initial and subsequent backups allow you to restore your data and settings if a failure occurs.
You can back up your information to an optional external hard drive, a network drive, or discs.
Note the following when backing up:
●Store personal les in the Documents library, and back it up regularly.
●Back up templates that are stored in their associated directories.
●Save customized settings that appear in a window, toolbar, or menu bar by taking a screen shot of your
settings. The screen shot can be a time-saver if you have to reset your preferences.
●When backing up to discs, number each disc after removing it from the drive.
NOTE: For detailed instructions on various backup and restore options, perform a search for these topics in
Help and Support. To access Help and Support, select Start > Help and Support.
NOTE: You may be prompted by User Account Control for your permission or password when you perform
certain tasks. To continue a task, select the appropriate option. For information about User Account Control, see
Help and Support: Select Start > Help and Support.
To create a backup using Windows Backup and Restore:
NOTE: The backup process may take over an hour, depending on le size and the speed of the computer.
1. Select Start > All Programs > Maintenance > Backup and Restore.
2. Follow the on-screen instructions to set up your backup.
Backing up, restoring, and recovering in Windows 7 125
System Restore
If you have a problem that might be due to software that you installed on your computer, or if you want to
restore the system to a previous state without losing any personal information, use System Restore to return
the computer to a previous restore point.
NOTE: Always use this System Restore procedure before you use the System Recovery feature.
To start System Restore:
1. Close all open programs.
2. Click the Start button, right-click Computer, and then click Properties.
3. Click System protection, System Restore, click Next, and then follow the on-screen instructions.
System Recovery
WARNING! This procedure will delete all user information. To prevent loss of information, be sure to back up all
user information so you can restore it after recovery.
System Recovery completely erases and reformats the hard disk drive, deleting all data les that you have
created, and then reinstalls the operating system, programs, and drivers. However, you must reinstall any
software that was not installed on the computer at the factory. This includes software that came on media
included in the computer accessory box, and any software programs you installed after purchase. Any personal
les must be restored from backups you made.
If you were not able to create system recovery DVDs or USB ash drive, you can order a recovery disc set from
support. Go to http://www.hp.com/support, select your country or region, and follow the on-screen instructions.
NOTE: Always use the System Restore procedure before you use the System Recovery program. See System
Restore on page 126.
You must choose one of the following methods to perform a System Recovery:
●Recovery image — Run System Recovery from a recovery image stored on your hard disk drive. The
recovery image is a le that contains a copy of the original factory-shipped software. To perform a System
Recovery from a recovery image, see System Recovery when Windows is responding on page 126 or
System Recovery when Windows is not responding on page 127.
●Recovery media — Run System Recovery from recovery media that you have created from les stored on
your hard disk drive or purchased separately. See System Recovery using recovery media (select models
only) on page 127.
System Recovery when Windows is responding
CAUTION: System Recovery deletes all data and programs you created or installed. Before you begin, back up
any important data to a CD or DVD or to a USB ash drive.
NOTE: In some cases, you must use recovery media for this procedure. If you have not already created this
media, follow the instructions in Creating recovery media on page 123.
If the computer is working and Windows 7 is responding, use these steps to perform a System Recovery:
1. Turn o the computer.
2. Disconnect all peripheral devices from the computer except the monitor, keyboard, and mouse.
3. Turn on the computer.
4. When Windows has loaded, click the Start button, and then click All Programs.
126 Chapter 10 System backup and recovery
●If Security and Protection is listed, continue with step 5.
●If Productivity and Tools is listed, follow the steps in System Recovery when Windows is not
responding on page 127.
5. Click Security and Protection, click Recovery Manager, and then click Recovery Manager. If prompted, click
Yes to allow the program to continue.
6. Under I need help immediately, click System Recovery.
7. Select Yes, and then click Next. Your computer restarts.
8. When the computer restarts, you will see the Recovery Manager welcome screen again. Under I need help
immediately, click System Recovery. If you are prompted to back up your les, and you have not done so,
select Back up your les rst (recommended), and then click Next. Otherwise, select Recover without
backing up your les, and then click Next.
9. System Recovery begins. After System Recovery is complete, click Finish to restart the computer.
10. When Windows has loaded, shut down the computer, reconnect all peripheral devices, and then turn the
computer back on.
System Recovery when Windows is not responding
CAUTION: System Recovery deletes all data and programs you created or installed.
If Windows is not responding, but the computer is working, follow these steps to perform a System Recovery.
1. Turn o the computer. If necessary, press and hold the power button until the computer turns o.
2. Disconnect all peripheral devices from the computer, except the monitor, keyboard, and mouse.
3. Press the power button to turn on the computer.
4. As soon as you see the HP logo screen, repeatedly press the F11 key on your keyboard until the Windows is
Loading Files… message appears on the screen.
5. At the HP Recovery Manager screen, follow the on-screen instructions to continue.
6. When Windows has loaded, shut down the computer, reconnect all peripheral devices, and then turn the
computer back on.
System Recovery using recovery media (select models only)
Use the steps provided in this section if you created recovery media using Creating recovery media using HP
Recovery Manager (select models only) on page 123. If you used HP Recovery Disc Creator to create a Windows
7 operating system DVD and a Driver Recovery DVD, use the steps in Using HP Recovery Disc operating system
discs (select models only) on page 128.
CAUTION: System Recovery deletes all data and programs you have created or installed. Back up any
important data to a CD or DVD or to a USB ash drive.
To perform a System Recovery using recovery media:
1. If you are using a set of DVDs, insert the rst recovery disc into the DVD drive tray, and close the tray. If you
are using a recovery USB ash drive, insert it into a USB port.
2. Click the Start button, and then click Shut Down.
or
If the computer is not responding, press and hold the power button for approximately 5 seconds or until
the computer turns o.
Backing up, restoring, and recovering in Windows 7 127
3. Disconnect all peripheral devices from the computer except the monitor, keyboard, and mouse.
4. Press the power button to turn on the computer, and press Esc as the computer is powering on to display
the startup menu.
5. Use the arrow keys to select the boot menu, and press Enter. Use the arrow keys to select the location
where the recovery media is inserted (USB or DVD). Press Enter to boot from that device.
6. If Recovery Manager asks if you want to run System Recovery from Media or Hard Drive, select Media. On
the Welcome screen, under I need help immediately, click Factory Reset.
7. If you are prompted to back up your les, and you have not done so, select Back up your les rst
(recommended), and then click Next. Otherwise, select Recover without backing up your les, and then click
Next.
8. If you are prompted to insert the next recovery disc, do so.
9. When Recovery Manager is nished, remove the recovery disc or the recovery USB ash drive from the
system.
10. Click Finish to restart the computer.
Using HP Recovery Disc operating system discs (select models only)
Use the steps provided in this section if you used HP Recovery Disc Creator to create a Windows 7 operating
system DVD and a Driver Recovery DVD. If you created recovery media using Creating recovery media using HP
Recovery Manager (select models only) on page 123. use the steps in System Recovery using recovery media
(select models only) on page 127.
If you cannot use the recovery discs you previously created using the HP Recovery Disc Creator (select models
only), you must purchase a Windows 7 operating system DVD to reboot the computer and repair the operating
system.
To order a Windows 7 operating system DVD, contact support. Go to http://www.hp.com/support, select your
country or region, and follow the on-screen instructions.
CAUTION: Using a Windows 7 operating system DVD completely erases the hard drive contents and reformats
the hard drive. All les that you have created and any software that you have installed on the computer are
permanently removed. When reformatting is complete, the recovery process helps you restore the operating
system, as well as drivers, software, and utilities.
To initiate recovery using a Windows 7 operating system DVD:
NOTE: This process takes several minutes.
1. If possible, back up all personal les.
2. Restart the computer, and then insert the Windows 7 operating system DVD into the optical drive before
the Windows operating system loads.
NOTE: If the computer does not boot to the DVD, restart the computer and press Esc as the computer is
powering on to see the startup menu. Use the arrow keys to select the boot menu and press Enter. Use the
arrow keys to select the location where the recovery DVD is inserted. Press Enter to boot from that device.
3. When prompted, press any keyboard key.
4. Follow the on-screen instructions.
5. Click Next.
128 Chapter 10 System backup and recovery
6. Select Install now.
7. Follow the on-screen instructions.
After the repair is completed:
1. Eject the Windows 7 operating system DVD and then insert the Driver Recovery DVD.
2. Follow the on-screen instructions to install the Hardware Enabling Drivers rst, and then install
Recommended Applications.
Backing up, restoring, and recovering in Windows 7 129
A Power Cord Set Requirements
The power supplies on some computers have external power switches. The voltage select switch feature on the
computer permits it to operate from any line voltage between 100-120 or 220-240 volts AC. Power supplies on
those computers that do not have external power switches are equipped with internal switches that sense the
incoming voltage and automatically switch to the proper voltage.
The power cord set received with the computer meets the requirements for use in the country where you
purchased the equipment.
Power cord sets for use in other countries must meet the requirements of the country where you use the
computer.
General Requirements
The requirements listed below are applicable to all countries:
1. The power cord must be approved by an acceptable accredited agency responsible for evaluation in the
country where the power cord set will be installed.
2. The power cord set must have a minimum current capacity of 10A (7A Japan only) and a nominal voltage
rating of 125 or 250 volts AC, as required by each country’s power system.
3. The diameter of the wire must be a minimum of 0.75 mm2 or 18AWG, and the length of the cord must be
between 1.8 m (6 feet) and 3.6 m (12 feet).
The power cord should be routed so that it is not likely to be walked on or pinched by items placed upon it or
against it. Particular attention should be paid to the plug, electrical outlet, and the point where the cord exits
from the product.
WARNING! Do not operate this product with a damaged power cord set. If the power cord set is damaged in any
manner, replace it immediately.
Japanese Power Cord Requirements
For use in Japan, use only the power cord received with this product.
CAUTION: Do not use the power cord received with this product on any other products.
130 Appendix A Power Cord Set Requirements
Country-Specic Requirements
Additional requirements specic to a country are shown in parentheses and explained below.
Country Accrediting Agency Country Accrediting Agency
Australia (1)
Austria (1)
Belgium (1)
Canada (2)
EANSW
OVE
CEBC
CSA
Italy (1)
Japan (3)
Norway (1)
Sweden (1)
IMQ
METI
NEMKO
SEMKO
Denmark (1)
Finland (1)
France (1)
Germany (1)
DEMKO
SETI
UTE
VDE
Switzerland (1)
United Kingdom (1)
United States (2)
SEV
BSI
UL
1. The exible cord must be Type HO5VV-F, 3-conductor, 0.75mm2 conductor size. Power cord set ttings (appliance coupler and wall
plug) must bear the certication mark of the agency responsible for evaluation in the country where it will be used.
2. The exible cord must be Type SVT or equivalent, No. 18 AWG, 3-conductor. The wall plug must be a two-pole grounding type with a
NEMA 5-15P (15A, 125V) or NEMA 6-15P (15A, 250V) conguration.
3. Appliance coupler, exible cord, and wall plug must bear a “T” mark and registration number in accordance with the Japanese
Dentori Law. Flexible cord must be Type VCT or VCTF, 3-conductor, 0.75 mm2 conductor size. Wall plug must be a two-pole
grounding type with a Japanese Industrial Standard C8303 (7A, 125V) conguration.
Country-Specic Requirements 131
B Statement of Volatility
HP conrms that HP commercial desktop systems contain DDR3 or DDR4 volatile memory (memory amount
depends on the customer conguration). In addition, the motherboard in the condition originally shipped without
subsequent modication or the addition or installation of any applications, features, or functionality, contains the
following nonvolatile memory: Real Time Clock battery backed-up conguration memory (256 Bytes), DIMM
Serial Presence Detect (SPD) conguration data (256 Bytes per module, 128 Bytes programmable), Serial
Peripheral Interface (SPI) ROM for System BIOS (EliteOne800 16M Bytes, EliteOne705 8M Bytes, ProOne600 16M
Bytes, ProOne600 16M Bytes, HP MP9 16M Bytes) and Serial Peripheral Interface (SPI) ROM for System FireBird
(Sure Start) (EliteOne800 8M Bytes, EliteOne705 8M Bytes)) and Super I/O’s: masked keyboard ROM (overall 2K
Bytes). In addition, these units contain a Trusted Platform Module (TPM) that contains 16K Bytes of non-volatile
memory for user data. The volatile memory will not hold any user data once power has been removed for 30
seconds or longer.
To restore the Non-Volatile memory:
1. Download the latest BIOS (system ROM) from the HP website.
2. Follow the instructions to ash the BIOS that are found on the website.
3. Turn on the system, and while system is powering on, and after the HP splash screen, press the F10 key to
enter BIOS setup screen.
4. Select Security > Restore Security Settings to Factory Defaults. Select Yes to conrm. The system will
reboot. This action will reset the settings in the Security menu to their defaults, reset the TPM and
embedded Fingerprint reader (if present), and clear the passwords.
NOTE: Although the TPM security keys will be cleared, data in the non-volatile memory indices may not
be. Data stored in these indices should not contain security sensitive information. If an application locks
down and secures the non-volatile indices, these indices cannot be cleared.
5. Re-enter the F10 setup utility.
6. Select Advanced > Secure Boot Conguration.
7. Select Reset Secure Boot Keys to factory defaults.
8. Press the F10, and the select Yes to save changes.
9. Re-enter the F10 setup utility.
10. Select Apply Factory Defaults and Exit, and the select Yes to conrm.
11. Re-enter the F10 Setup Utility and select Save Custom Defaults to erase any custom values previously
saved.
If Absolute Persistence Module is enabled on the computer, see the service provider for instructions to disable
the feature.
132 Appendix B Statement of Volatility
CSpecications
Unit Value Value
Dimensions (with stand)
Height
Width
Depth
6.9 in
7.0 in
1.3 in
175 mm
177 mm
34 mm
Approximate Weight 2.9 lb 1.3 kg
Temperature Range
Operating
Nonoperating
50° to 95°F
-22° to 140°F
10° to 35°C
-30° to 60°C
NOTE: Operating temperature is derated 1.0° C per 300 m (1000 ft) to 3000 m (10,000 ft) above sea level; no direct sustained
sunlight. Maximum rate of change is 10° C/Hr. The upper limit may be limited by the type and number of options installed.
Relative Humidity (noncondensing)
Operating
Nonoperating (38.7°C max wet bulb)
10-90%
5-95%
10-90%
5-95%
Maximum Altitude (unpressurized)
Operating
Nonoperating
16,404 ft
50,000 ft
5000 m
15.240 m
Power Supply
Operating Voltage Range
Rated Voltage Range
Rated Line Frequency
Operating Line Frequency
90-264 VAC
100-240 VAC
50-60 Hz
47-63 Hz
Standard eciency 90W, 89% ecient
65W, 89% ecient
DC Output +19.5V
1This system utilizes an active power factor corrected power supply. This allows the system to pass the CE mark requirements for use in
the countries of the European Union. The active power factor corrected power supply also has the added benet of not requiring an input
voltage range select switch.
133
Index
A
access panel
locked 74
administrator password 110
antenna (external)
removal and replacement 32
audible codes 108
audio problems 86
B
backup and recovery, Windows 7
122
Backup and Restore, Windows 7 125
backups
creating Windows 7 123, 125
battery
disposal 17
removal and replacement 34
battery replacement 34
beep codes 108
bezel
illustrated 6
BIOS
clearing and resetting 112
booting options
Full Boot 103
Quick Boot 103
C
cable management 19
cable pinouts, SATA data 18
cautions
AC power 12
cables 17
electrostatic discharge 12
keyboard cleaning 15
keyboard keys 16
CD-ROM or DVD problems 96
cleaning
computer 15
mouse 16
safety precautions 15
CMOS
backing up 110
computer
specications 133
computer cleaning 15
Computer Setup
access problem 73
country power cord set
requirements 131
Customer Support 71
D
disassembly preparation 20
DisplayPort option board
illustrated 9
drive cage
removal and replacement 27
Driver Recovery DVD,
creating 124
using for restore 128
Driver Recovery media, Windows
122
Driver Recovery media, Windows 8.1
122
E
electrostatic discharge (ESD) 12
preventing damage 13
error
codes 103, 108
messages 103
expansion connector board
removal and replacement 48
external antenna
removal and replacement 32
F
F10 Setup
access problem 73
f11 recovery, Windows 8 121
f11 recovery, Windows 8.1 121
fan
illustrated 9
removal and replacement 26, 37
ash drive problems 99
ashing LEDs 108
front bezel
removal and replacement 22
front panel components
EliteDesk 705 2
EliteDesk 800 1
MP9 1
ProDesk 600 1
front panel problems 100
G
general problems 73
grounding methods 13
H
hard drive
installation 23
proper handling 17
removal 23
removal and replacement 23, 28
SATA characteristics 17
hard drive problems 78
hard drive recovery
Windows 121
Windows 7 126
Windows 8.1 121
hardware installation problems 90
HDMI option board
illustrated 9
heat sink
illustrated 9
removal and replacement 43, 45
Help and Support
Windows 7 123
helpful hints 72
hood sensor assembly 9
HP PC Hardware Diagnostics (UEFI)
downloading 114
HP Recovery Disc Creator, using 124
HP Ultraslim Keyed Cable Lock 9
I
installing
battery 34
hard drive 23
134 Index
memory 39
solid state drive 28
Internet access problems 100
K
keyboard
cleaning 15
keyboard problems 89
M
media card reader
problems 80
memory
installation 39
maximum 39
problems 95
removal and replacement 41
slots 39
socket population 40
SODIMMs specications 39
specications 39
memory modules
illustrated 7, 39
monitor problems 81
mouse
cleaning 16
problems 89
N
network problems 92
numeric error codes 103
O
operating guidelines 14
operating system media, Windows 8
122
operating system media, Windows
8.1 122
optical drive
problems 96
option board, DisplayPort
illustrated 9
option board, HDMI
illustrated 9
option board, serial port
illustrated 9
overheating, prevention 14
P
password
administrator 110
clearing 110
power-on 110
POST error messages 103
power cord set requirements
country specic 131
power problems 77
power supply
illustrated 6
operating voltage range 133
power switch/light cover
illustrated 9
removal and replacement 38
power-on password 110
printer problems 88
problems
audio 86
CD-ROM or DVD 96
Computer Setup 73
F10 Setup 73
ash drive 99
front panel 100
general 73
hard drive 78
hardware installation 90
Internet access 100
keyboard 89
Media Card Reader 80
memory 95
monitor 81
mouse 89
network 92
power 77
printer 88
software 102
product ID location 5
R
rear panel components
EliteDesk 705 3
EliteDesk 800 3
MP9 3
ProDesk 400 4
ProDesk 600 3
recovery discs, steps for creating
Windows 7 124
recovery discs, using for restore 128
recovery media, creating 124
recovery media, creating Windows 7
123
recovery partition, Windows 8 121
recovery partition, Windows 8.1 121
recovery USB ash drive, steps for
creating Windows 7 124
recovery using Windows 8 operating
system media 122
recovery using Windows 8.1 operating
system media 122
removal and replacement
antenna (external) 32
battery 34
drive cage 27
expansion connector board 48
external antenna 32
fan 26, 37
front bezel 22
hard drive 23, 28
heat sink 43, 45
memory 41
power switch/light cover 38
speaker 47
system board 49
thermal sensor 36
top cover 21
WLAN antennas 54
WLAN module 30
removing
battery 34
hard drive 23
solid state drive 28
resetting
CMOS 110
password jumper 110
restoring the hard drive, Windows
121
restoring the hard drive, Windows
8.1 121
S
safety and comfort 71
safety precautions
cleaning 15
SATA
connectors on system board 17
data cable pinouts 18
hard drive characteristics 17
SATA cable
illustrated 8
screws, correct size 16
secondary hard drive fan
illustrated 9
Index 135
serial number location 5
serial port option board
illustrated 9
service considerations 16
SODIMM
specications 39
software
problems 102
servicing computer 16
solid state drive
installation 28
removal 28
speaker
illustrated 9
removal and replacement 47
specications
computer 133
specications, memory 39
static electricity 12
system board
illustrated 6
removal and replacement 49
SATA connectors 17
System Recovery using Windows 7
recovery media 127
System Recovery, Windows 7 126
system restore points, creating
Windows 7 123
System Restore, Windows 7 126
T
tamper-proof screws
tool 16
temperature control 14
thermal sensor
illustrated 9
removal and replacement 36
tools, servicing 16
top cover
illustrated 6
removal and replacement 21
Torx T15 screwdriver 16
tower conversion 57
V
ventilation, proper 14
W
Windows 10
backup and restore 116
Windows 7
backing up information 125
backup and recovery 122
Backup and Restore 125
creating backups 123
creating recovery media 123
creating system restore points
123
hard drive recovery 126
Help and Support 123
steps for creating recovery discs
124
steps for creating recovery
media 123
steps for creating recovery USB
ash drive 124
System Recovery 126
System Recovery using recovery
media 127
System Restore 126
Windows 7 operating system discs
using for restore 128
Windows 7 operating system DVD
creating 124
using for restore 128
Windows 7 operating system media
creating 124
Windows 8
backup and restore 120
Driver Recovery media 122
f11 recovery 121
hard drive recovery 121
operating system DVD 122
recovery partition 121
restoring the hard drive 121
Windows 8.1
backup and restore 120
Driver Recovery media 122
f11 recovery 121
hard drive recovery 121
operating system DVD 122
recovery partition 121
restoring the hard drive 121
WLAN antennas
removal and replacement 54
WLAN module
removal and replacement 30
136 Index
