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DELL OptiPlex 7090 Micro Form Factor Desktop Computer Owner's Manual

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OptiPlex 7090 Micro Form Factor Service Manual

Owner's Manual

specifications, disassembly, replacing hard drive, owner's manual, memory upgrade, processor upgrade, bios settings

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OptiPlex 7090 Micro Form Factor
Service Manual
Regulatory Model: D14U Regulatory Type: D14U004/D14U005 May 2021 Rev. A00

Notes, cautions, and warnings
NOTE: A NOTE indicates important information that helps you make better use of your product. CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
� 2021 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.

Contents

Chapter 1: Working inside your computer...................................................................................... 5 Safety instructions.............................................................................................................................................................. 5 Before working inside your computer.......................................................................................................................5 Safety precautions........................................................................................................................................................ 6 Electrostatic discharge--ESD protection............................................................................................................... 6 ESD field service kit ..................................................................................................................................................... 7 Transporting sensitive components.......................................................................................................................... 8 After working inside your computer..........................................................................................................................8
Chapter 2: Removing and installing components........................................................................... 9 Recommended tools........................................................................................................................................................... 9 Screw List..............................................................................................................................................................................9 Major components of your system................................................................................................................................. 11 Side cover............................................................................................................................................................................ 12 Removing the side cover............................................................................................................................................ 12 Installing the side cover.............................................................................................................................................. 14 Front bezel...........................................................................................................................................................................15 Removing the front bezel...........................................................................................................................................15 Installing the front bezel.............................................................................................................................................16 Solid-state drive................................................................................................................................................................. 17 Removing the M.2 2230 PCIe solid-state drive.................................................................................................... 17 Installing the M.2 2230 PCIe solid-state drive...................................................................................................... 18 Removing the M.2 2280 PCIe solid-state drive....................................................................................................19 Installing the M.2 2280 PCIe solid-state drive..................................................................................................... 20 WLAN card.......................................................................................................................................................................... 21 Removing the WLAN card..........................................................................................................................................21 Installing the WLAN card........................................................................................................................................... 22 Fan assembly...................................................................................................................................................................... 24 Removing the fan assembly-Discrete configuration........................................................................................... 24 Installing the fan assembly-Discrete configuration............................................................................................. 25 Coin-cell battery................................................................................................................................................................ 26 Removing the coin-cell battery................................................................................................................................26 Installing the coin-cell battery.................................................................................................................................. 27 Memory modules............................................................................................................................................................... 28 Removing the memory modules...............................................................................................................................28 Installing the memory modules.................................................................................................................................29 Speaker................................................................................................................................................................................ 30 Removing the speaker................................................................................................................................................30 Installing the speaker...................................................................................................................................................31 Processor............................................................................................................................................................................ 32 Removing the processor............................................................................................................................................32 Installing the processor.............................................................................................................................................. 33 System board..................................................................................................................................................................... 35 Removing the system board..................................................................................................................................... 35

Contents

Installing the system board....................................................................................................................................... 39 Graphics card...................................................................................................................................................................... 41
Removing the graphics card......................................................................................................................................41 Installing the graphics card....................................................................................................................................... 42
Chapter 3: Software.................................................................................................................... 44 Operating system.............................................................................................................................................................. 44 Drivers and downloads..................................................................................................................................................... 44
Chapter 4: System setup............................................................................................................. 45 BIOS overview................................................................................................................................................................... 45 Updating the BIOS in Windows .................................................................................................................................... 45 Updating BIOS on systems with BitLocker enabled............................................................................................46 Updating your system BIOS using a USB flash drive..........................................................................................46 Entering BIOS setup program.........................................................................................................................................47 Navigation keys..................................................................................................................................................................47 Boot Sequence...................................................................................................................................................................47 System setup options....................................................................................................................................................... 47 Clearing CMOS settings.................................................................................................................................................. 56 System and setup password.......................................................................................................................................... 56 Assigning a system setup password....................................................................................................................... 57 Deleting or changing an existing system setup password................................................................................. 57 Clearing BIOS (System Setup) and System passwords.......................................................................................... 58
Chapter 5: Troubleshooting.........................................................................................................59 SupportAssist diagnostics...............................................................................................................................................59 Display built-in self test................................................................................................................................................... 59 Diagnostics..........................................................................................................................................................................59 Recovering the operating system.................................................................................................................................. 61 Flashing BIOS (USB key)................................................................................................................................................. 61 Flashing the BIOS...............................................................................................................................................................61 System error messages................................................................................................................................................... 62 WiFi power cycle............................................................................................................................................................... 62 Flea power release............................................................................................................................................................ 63
Chapter 6: Getting help and contacting Dell................................................................................ 64

Contents

1
Working inside your computer

Safety instructions
Use the following safety guidelines to protect your computer from potential damage and to ensure your personal safety. Unless otherwise noted, each procedure included in this document assumes that you have read the safety information that shipped with your computer.
WARNING: Before working inside your computer, read the safety information that is shipped with your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. WARNING: Disconnect your computer from all power sources before opening the computer cover or panels. After you finish working inside the computer, replace all covers, panels, and screws before connecting your computer to an electrical outlet.
CAUTION: To avoid damaging the computer, ensure that the work surface is flat, dry, and clean.
CAUTION: To avoid damaging the components and cards, handle them by their edges, and avoid touching the pins and the contacts. CAUTION: You should only perform troubleshooting and repairs as authorized or directed by the Dell technical assistance team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. See the safety instructions that is shipped with the product or at www.dell.com/regulatory_compliance. CAUTION: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back of the computer. While you work, periodically touch an unpainted metal surface to dissipate static electricity which could harm internal components. CAUTION: When you disconnect a cable, pull it by its connector or its pull tab, not the cable itself. Some cables have connectors with locking tabs or thumbscrews that you must disengage before disconnecting the cable. When disconnecting cables, keep them evenly aligned to avoid bending the connector pins. When connecting cables, ensure that the ports and the connectors are correctly oriented and aligned.
CAUTION: Press and eject any installed card from the media-card reader.
NOTE: The color of your computer and certain components may appear differently than shown in this document.
Before working inside your computer
About this task NOTE: The images in this document may differ from your computer depending on the configuration you ordered.
Steps 1. Save and close all open files and exit all open applications. 2. Shut down your computer. Click Start > Power > Shut down.
NOTE: If you are using a different operating system, see the documentation of your operating system for shut-down instructions.

Working inside your computer

3. Disconnect your computer and all attached devices from their electrical outlets. 4. Disconnect all attached network devices and peripherals, such as keyboard, mouse, and monitor from your computer.
CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from the network device.
5. Remove any media card and optical disc from your computer, if applicable.
Safety precautions
The safety precautions chapter details the primary steps to be taken before performing any disassembly instructions. Observe the following safety precautions before you perform any installation or break/fix procedures involving disassembly or reassembly: Turn off the system and all attached peripherals. Disconnect the system and all attached peripherals from AC power. Disconnect all network cables, telephone, and telecommunications lines from the system. Use an ESD field service kit when working inside any notebook to avoid electrostatic discharge (ESD) damage. After removing any system component, carefully place the removed component on an anti-static mat. Wear shoes with non-conductive rubber soles to reduce the chance of getting electrocuted.
Standby power
Dell products with standby power must be unplugged before you open the case. Systems that incorporate standby power are essentially powered while turned off. The internal power enables the system to be remotely turned on (wake on LAN) and suspended into a sleep mode and has other advanced power management features. Unplugging, pressing and holding the power button for 20 seconds should discharge residual power in the system board. Remove the battery from notebooks.
Bonding
Bonding is a method for connecting two or more grounding conductors to the same electrical potential. This is done through the use of a field service electrostatic discharge (ESD) kit. When connecting a bonding wire, ensure that it is connected to bare metal and never to a painted or non-metal surface. The wrist strap should be secure and in full contact with your skin, and ensure that you remove all jewelry such as watches, bracelets, or rings prior to bonding yourself and the equipment.
Electrostatic discharge--ESD protection
ESD is a major concern when you handle electronic components, especially sensitive components such as expansion cards, processors, memory DIMMs, and system boards. Very slight charges can damage circuits in ways that may not be obvious, such as intermittent problems or a shortened product life span. As the industry pushes for lower power requirements and increased density, ESD protection is an increasing concern. Due to the increased density of semiconductors used in recent Dell products, the sensitivity to static damage is now higher than in previous Dell products. For this reason, some previously approved methods of handling parts are no longer applicable. Two recognized types of ESD damage are catastrophic and intermittent failures. Catastrophic � Catastrophic failures represent approximately 20 percent of ESD-related failures. The damage causes
an immediate and complete loss of device functionality. An example of catastrophic failure is a memory DIMM that has received a static shock and immediately generates a "No POST/No Video" symptom with a beep code emitted for missing or nonfunctional memory. Intermittent � Intermittent failures represent approximately 80 percent of ESD-related failures. The high rate of intermittent failures means that most of the time when damage occurs, it is not immediately recognizable. The DIMM receives a static shock, but the tracing is merely weakened and does not immediately produce outward symptoms related to the damage. The weakened trace may take weeks or months to melt, and in the meantime may cause degradation of memory integrity, intermittent memory errors, etc. The more difficult type of damage to recognize and troubleshoot is the intermittent (also called latent or "walking wounded") failure.

Working inside your computer

Perform the following steps to prevent ESD damage: Use a wired ESD wrist strap that is properly grounded. The use of wireless anti-static straps is no longer allowed; they do not
provide adequate protection. Touching the chassis before handling parts does not ensure adequate ESD protection on parts with increased sensitivity to ESD damage. Handle all static-sensitive components in a static-safe area. If possible, use anti-static floor pads and workbench pads. When unpacking a static-sensitive component from its shipping carton, do not remove the component from the anti-static packing material until you are ready to install the component. Before unwrapping the anti-static packaging, ensure that you discharge static electricity from your body. Before transporting a static-sensitive component, place it in an anti-static container or packaging.
ESD field service kit
The unmonitored Field Service kit is the most commonly used service kit. Each Field Service kit includes three main components: anti-static mat, wrist strap, and bonding wire.
Components of an ESD field service kit
The components of an ESD field service kit are: Anti-Static Mat � The anti-static mat is dissipative and parts can be placed on it during service procedures. When using an
anti-static mat, your wrist strap should be snug and the bonding wire should be connected to the mat and to any bare metal on the system being worked on. Once deployed properly, service parts can be removed from the ESD bag and placed directly on the mat. ESD-sensitive items are safe in your hand, on the ESD mat, in the system, or inside a bag. Wrist Strap and Bonding Wire � The wrist strap and bonding wire can be either directly connected between your wrist and bare metal on the hardware if the ESD mat is not required, or connected to the anti-static mat to protect hardware that is temporarily placed on the mat. The physical connection of the wrist strap and bonding wire between your skin, the ESD mat, and the hardware is known as bonding. Use only Field Service kits with a wrist strap, mat, and bonding wire. Never use wireless wrist straps. Always be aware that the internal wires of a wrist strap are prone to damage from normal wear and tear, and must be checked regularly with a wrist strap tester in order to avoid accidental ESD hardware damage. It is recommended to test the wrist strap and bonding wire at least once per week. ESD Wrist Strap Tester � The wires inside of an ESD strap are prone to damage over time. When using an unmonitored kit, it is a best practice to regularly test the strap prior to each service call, and at a minimum, test once per week. A wrist strap tester is the best method for doing this test. If you do not have your own wrist strap tester, check with your regional office to find out if they have one. To perform the test, plug the wrist-strap's bonding-wire into the tester while it is strapped to your wrist and push the button to test. A green LED is lit if the test is successful; a red LED is lit and an alarm sounds if the test fails. Insulator Elements � It is critical to keep ESD sensitive devices, such as plastic heat sink casings, away from internal parts that are insulators and often highly charged. Working Environment � Before deploying the ESD Field Service kit, assess the situation at the customer location. For example, deploying the kit for a server environment is different than for a desktop or portable environment. Servers are typically installed in a rack within a data center; desktops or portables are typically placed on office desks or cubicles. Always look for a large open flat work area that is free of clutter and large enough to deploy the ESD kit with additional space to accommodate the type of system that is being repaired. The workspace should also be free of insulators that can cause an ESD event. On the work area, insulators such as Styrofoam and other plastics should always be moved at least 12 inches or 30 centimeters away from sensitive parts before physically handling any hardware components ESD Packaging � All ESD-sensitive devices must be shipped and received in static-safe packaging. Metal, static-shielded bags are preferred. However, you should always return the damaged part using the same ESD bag and packaging that the new part arrived in. The ESD bag should be folded over and taped shut and all the same foam packing material should be used in the original box that the new part arrived in. ESD-sensitive devices should be removed from packaging only at an ESD-protected work surface, and parts should never be placed on top of the ESD bag because only the inside of the bag is shielded. Always place parts in your hand, on the ESD mat, in the system, or inside an anti-static bag. Transporting Sensitive Components � When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport.
ESD protection summary
It is recommended that all field service technicians use the traditional wired ESD grounding wrist strap and protective anti-static mat at all times when servicing Dell products. In addition, it is critical that technicians keep sensitive parts separate from all insulator parts while performing service and that they use anti-static bags for transporting sensitive components.

Working inside your computer

Transporting sensitive components
When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport.
After working inside your computer
About this task CAUTION: Leaving stray or loose screws inside your computer may severely damage your computer.
Steps 1. Replace all screws and ensure that no stray screws remain inside your computer. 2. Connect any external devices, peripherals, or cables you removed before working on your computer. 3. Replace any media cards, discs, or any other parts that you removed before working on your computer. 4. Connect your computer and all attached devices to their electrical outlets. 5. Turn on your computer.

Working inside your computer

Removing and installing components

NOTE: The images in this document may differ from your computer depending on the configuration you ordered.

Recommended tools
The procedures in this document require the following tools: Phillips #0 screwdriver Phillips #1 screwdriver Flat headed screwdriver Plastic scribe

Screw List

The following table shows the screw list and the image of the screws.
NOTE: When removing screws from a component, it is recommended to note the screw type, the quantity of screws, and then place them in a screw storage box. This is to ensure that the correct number of screws and correct screw type is restored when the component is replaced.
NOTE: Some computers have magnetic surfaces. Ensure that the screws are not left attached to such surface when replacing a component.

NOTE: Screw color may vary with the configuration ordered.

Table 1. Screw list Component Side cover

Screw type #6-32

Quantity 1

Image

System board

#6-32

M2x4

Hard drive support
Fan and heat sink assembly WLAN card

#6-32
M3x25 M2x3.5

1
3 1

Removing and installing components

Table 1. Screw list (continued) Component M.2 2230/2280 Solid-state drive
Discrete graphics processing units (DGPU) bracket

Screw type M2x3.5
M3x5

Quantity 3
2

Image

Removing and installing components

Major components of your system

1. Side cover

Removing and installing components

2. System fan 3. Heat sink 4. Speaker 5. Hard-disk drive support 6. Memory module 7. System board 8. Chassis 9. Processor 10. M.2 WLAN card 11. Graphics card bracket 12. Graphics card 13. M.2 Solid-state drive 14. 2.5-inch hard-disk drive assembly
NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased. These parts are available according to warranty coverages purchased by the customer. Contact your Dell sales representative for purchase options.
Side cover
Removing the side cover
Prerequisites 1. Follow the procedure in before working inside your computer.
NOTE: Ensure that you remove the security cable from the security-cable slot (if applicable).
About this task The following images indicate the location of the side cover and provide a visual representation of the removal procedure.

Removing and installing components

Steps 1. Loosen the thumbscrew (6x32) that secures the side cover to the system.

Removing and installing components

2. Slide the side cover towards the front of the system and lift the cover.
Installing the side cover
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the side cover and provides a visual representation of the installation procedure.

Removing and installing components

Steps 1. Align the side cover with the grooves on the chassis. 2. Slide the side cover towards the back of the system to install it. 3. Tighten the thumbscrew (6x32) to secure the side cover to the system.
Next steps 1. Follow the procedure in after working inside your computer.
Front bezel
Removing the front bezel
Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover.
About this task The following images indicate the location of the front bezel and provide a visual representation of the removal procedure.

Removing and installing components

Steps 1. Pry the retention tabs to release the front bezel from the system. 2. Remove the front bezel from the system.
Installing the front bezel
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following image indicates the location of the front bezel and provides a visual representation of the installation procedure.

Removing and installing components

Steps 1. Position the bezel to align the tabs with the slots on the chassis. 2. Press the bezel until the release tabs click into place.
Next steps 1. Install the side cover. 2. Follow the procedure in after working inside your computer.
Solid-state drive
Removing the M.2 2230 PCIe solid-state drive
Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. 3. Remove the graphics card.
About this task The following images indicate the location of the solid-state drive and provide a visual representation of the removal procedure.

Removing and installing components

Steps 1. Remove the screw (M2x3.5) that secures the solid-state drive to the system board. 2. Slide and lift the solid-state drive off the system board.
Installing the M.2 2230 PCIe solid-state drive
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following image indicates the location of the solid-state drive and provides a visual representation of the installation procedure.

Removing and installing components

Steps 1. Align the notch on the solid-state drive with the tab on the solid-state drive connector on the system board. 2. Insert the solid-state drive at a 45-degree angle into the solid-state drive connector. 3. Replace the screw (M2x3.5) that secures the M.2 2230 PCIe solid-state drive to the system board.
Next steps 1. Install the graphics card. 2. Install the side cover. 3. Follow the procedure in after working inside your computer.
Removing the M.2 2280 PCIe solid-state drive
Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. 3. Remove the graphics card.
About this task The following images indicate the location of the solid-state drive and provide a visual representation of the removal procedure.

Removing and installing components

Steps 1. Remove the screw (M2x3.5) that secures the solid-state drive to the system board. 2. Slide and lift the solid-state drive off the system board.
Installing the M.2 2280 PCIe solid-state drive
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following image indicates the location of the solid-state drive and provides a visual representation of the installation procedure.

Removing and installing components

Steps 1. Align the notch on the solid-state drive with the tab on the solid-state drive connector on the system board. 2. Insert the solid-state drive at a 45-degree angle into the solid-state drive connector. 3. Replace the screw (M2x3.5) that secures the M.2 2280 PCIe solid-state drive to the system board.
Next steps 1. Install the graphics card. 2. Install the side cover. 3. Follow the procedure in after working inside your computer.
WLAN card
Removing the WLAN card
Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. 3. Remove the graphics card
About this task The following images indicate the location of the wireless card and provide a visual representation of the removal procedure.

Removing and installing components

Steps 1. Using a plastic scribe pry open the WWAN card shielding cover from the sides of the WWAN card shielding cover. 2. Lift the WWAN card shielding cover away from the the computer. 3. Remove the (M2x3.5) screw that secures the WLAN card bracket to the system board. 4. Slide and lift the WLAN card bracket away from the WLAN card. 5. Disconnect the antenna cables from the WLAN card. 6. Slide and remove the WLAN card from the connector on the system board.
Installing the WLAN card
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

Removing and installing components

About this task The following image indicates the location of the wireless card and provides a visual representation of the installation procedure.

Steps 1. Connect the antenna cables to the WLAN card.
The following table provides the antenna-cable color scheme for the WLAN card of your computer.

Table 2. Antenna-cable color scheme Connectors on the wireless card Main (white triangle)

Antenna-cable color White

Auxiliary (black triangle)

Black

Removing and installing components

2. Place the WLAN card bracket to secure the antenna cables. 3. Align the notch on the WLAN card with the tab on the WLAN card slot. Insert the WLAN card into the connector on the
system board. 4. Replace the (M2x3.5) screw to secure the WLAN card bracket to the WLAN card. 5. Align and place the WWAN-card shielding cover, press to fit it firmly to cover the WWAN card.
Next steps 1. Install the graphics card. 2. Install the side cover. 3. Follow the procedure in after working inside your computer.
Fan assembly
Removing the fan assembly-Discrete configuration
Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. 3. Remove the graphics card
About this task The following images indicate the location of the fan assembly and provide a visual representation of the removal procedure.

Removing and installing components

Steps 1. Disconnect the fan cable from the connector on the system board. 2. Remove the three (M3x25)screws that secures the fan assembly to the system board. 3. Lift the fan assembly away from the system board.
Installing the fan assembly-Discrete configuration
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following images indicate the location of the fan assembly and provide a visual representation of the removal procedure.

Removing and installing components

Steps 1. Align and place the fan assembly on the system board. 2. Replace the three (M3x25) screws that secures the fan assembly to the system board. 3. Connect the fan cable to the connector on the system board.
Next steps 1. Install the graphics card. 2. Install the side cover. 3. Follow the procedure in after working inside your computer.
Coin-cell battery
Removing the coin-cell battery
Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. 3. Remove the graphics card
NOTE: Removing the coin-cell battery resets the BIOS setup program settings to default. It is recommended that you note the BIOS setup program settings before removing the coin-cell battery.

Removing and installing components

About this task The following images indicate the location of the coin-cell battery and provide a visual representation of the removal procedure.

Steps 1. Using a plastic scribe, gently pry the coin-cell battery out of the battery socket on the system board. 2. Remove the coin-cell battery out of the system.
Installing the coin-cell battery
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following image indicates the location of the coin-cell battery and provides a visual representation of the installation procedure.

Removing and installing components

Steps 1. Insert the coin cell battery with the "+" sign facing up and slide it under the securing tabs at the positive side of the
connector. 2. Press the battery into the connector until it locks into place.
Next steps 1. Install the graphics card. 2. Install the side cover. 3. Follow the procedure in after working inside your computer.
Memory modules
Removing the memory modules
Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. 3. Remove the graphics card
About this task The following images indicate the location of the memory modules and provide a visual representation of the removal procedure.
CAUTION: To prevent damage to the memory module, hold the memory module by the edges. Do not touch the components on the memory module.

Removing and installing components

Steps 1. Pull the securing clips from the memory module until the memory module pops up. 2. Slide and remove the memory module from the memory-module slot.
Installing the memory modules
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following image indicates the location of the memory modules and provides a visual representation of the installation procedure.

Removing and installing components

Steps 1. Align the notch on the memory module with the tab on the memory-module slot. 2. Slide the memory module firmly into the slot at an angle and press the memory module down until it clicks into place.
NOTE: If you do not hear the click, remove the memory module and reinstall it.
Next steps 1. Remove the graphics card 2. Install the side cover. 3. Follow the procedure in after working inside your computer.
Speaker
Removing the speaker
Prerequisites NOTE: Based on the configuration ordered the images may slightly vary from the actual system. The images are still applicable to convey the service procedures accurately.
1. Follow the procedure in before working inside your computer. 2. Remove the side cover. 3. Remove the fan assembly (This applies to 35 W and 65 W configuration systems).
About this task The following images indicate the location of the speaker and provide a visual representation of the removal procedure.

Removing and installing components

Steps 1. Disconnect the speaker cable from the system board. 2. Press the release tab and lift the speaker along with the cable from the system board.
Installing the speaker
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following image indicates the location of the speaker and provides a visual representation of the installation procedure.

Removing and installing components

Steps 1. Align and insert the speaker into the slot and press it until the release tab clicks. 2. Connect the speaker cable to the system board.
Next steps 1. Install the fan assembly (This applies to 35 W and 65 W configuration systems). 2. Install the side cover. 3. Follow the procedure in after working inside your computer.
Processor
Removing the processor
Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. 3. Remove the fan assembly. 4. Remove the graphics card
About this task The following images indicate the location of the processor and provide a visual representation of the removal procedure.

Removing and installing components

Steps 1. Press down and push the release lever away from the processor to release it from the securing tab. 2. Lift the lever upward to lift the processor cover.
CAUTION: When removing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket. 3. Gently lift the processor from the processor socket.
Installing the processor
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following image indicates the location of the processor and provides a visual representation of the installation procedure.

Removing and installing components

Steps 1. Align the pin-1 corner of the processor with the pin 1 corner of the processor socket, and then place the processor in the
processor socket. NOTE: The pin-1 corner of the processor has a triangle that aligns with the triangle on the pin-1 corner on the processor socket. When the processor is properly seated, all four corners are aligned at the same height. If one or more corners of the processor are higher than the others, the processor is not seated properly.
2. When the processor is fully seated in the socket, close the processor cover. 3. Press down and push the release lever under the securing tab to lock it.
Next steps 1. Install the graphics card. 2. Install the fan assembly. 3. Install the side cover. 4. Follow the procedure in after working inside your computer.

Removing and installing components

System board
Removing the system board
Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. 3. Remove the graphics card 4. Remove the solid-state drive. 5. Remove the WLAN card. 6. Remove the fan assembly. 7. Remove the memory module. 8. Remove the speaker. 9. Remove the processor.
About this task The following images indicate the location of the system board and provide a visual representation of the removal procedure. Discrete system board

1. M.2 WLAN connector 2. M.2 SSD PCIe connector 3. Coin-cell battery 4. M.2 SSD PCIe connector 5. Riser card connector 6. Processor socket 7. Memory slots 8. Intrusion switch
35 W system board

Removing and installing components

1. M.2 WLAN card connector 2. M.2 SSD PCIe connector 3. 2.5-inch hard-drive connector 4. Coin-cell battery 5. Optional video connector (VGA Port/DisplayPort 1.4 Port/HDMI 2.0b Port) 6. Optional connector (USB 3.2 Gen 2 Type-C Port) 7. Optional Keyboard and mouse serial port connector 8. Processor socket 9. CPU Fan connector 10. Internal speaker connector 11. Memory modules 12. M.2 SSD PCIe connector
65 W system board

Removing and installing components

1. M.2 WLAN card connector 2. 2.5-inch hard-drive connector 3. M.2 SSD PCIe connector 4. Coin-cell battery 5. Optional video connector (VGA Port/DisplayPort 1.4 Port/HDMI 2.0b Port) 6. Optional connector (USB 3.2 Gen 2 Type-C Port) 7. Optional Keyboard and mouse serial port connector 8. Processor socket 9. CPU Fan connector 10. Internal speaker connector 11. Memory modules 12. Intrusion switch 13. M.2 SSD PCIe connector

Removing and installing components

Steps 1. Remove the screw (6-32) that secures the hard drive support to the system board. 2. Lift the hard drive support away from the system board. 3. Remove the three (M3x4) screws and three (6-32) screws that secure the system board to the chassis. 4. Lift the system board away from the chassis.
Installing the system board
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following image indicates the location of the system board and provides a visual representation of the installation procedure.

Removing and installing components

Steps 1. Align and lower the system board into the system until the connectors at the back of the system board align with the slots
on the chassis, and the screw holes on the system board align with the standoffs on the system. 2. Replace the three (M3x4) screws and three (6-32) screws to secure the system board to the chassis. 3. Align the slot on the hard drive support with system board and place the hard drive support on the system board. 4. Replace the screw (6-32) to secure the hard drive support to the system board.
Next steps 1. Install the processor. 2. Install the speaker. 3. Install the memory module. 4. Install the fan assembly. 5. Install the WLAN card. 6. Install the solid-state drive. 7. Install the graphics card. 8. Install the side cover. 9. Follow the procedure in after working inside your computer.
Graphics card
Removing the graphics card
Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover.

Removing and installing components

About this task The following image indicates the location of the graphics card and provides a visual representation of the removal procedure.

Steps Push and hold the securing tab on the graphics-card slot and lift the graphics card assembly away from the computer.
Installing the graphics card
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following image indicates the location of the graphics card and provides a visual representation of the installation procedure.

Removing and installing components

Steps Align the graphics card on the system board and press down firmly. Ensure that the card is firmly seated.
Next steps 1. Install the side cover. 2. Follow the procedure in after working inside your computer.

Removing and installing components

3
Software
This chapter details the supported operating systems along with instructions on how to install the drivers.
Operating system
Your OptiPlex 7090 Micro supports the following operating systems: Windows 10 Home, 64-bit Windows 10 IoT Enterprise 2019 LTSC (OEM only) Windows 10 Pro, 64-bit Windows 10 Pro Education, 64-bt Kylin Linux Desktop version 10.1 (China only) Ubuntu Linux 20.04 LTS, 64-bit Windows 10 CMIT Government Edition 64-bit (China only)
Drivers and downloads
When troubleshooting, downloading or installing drivers it is recommended that you read the Dell Knowledge Based article, Drivers and Downloads FAQ SLN128938.

Software

4
System setup
CAUTION: Unless you are an expert computer user, do not change the settings in the BIOS Setup program. Certain changes can make your computer work incorrectly. NOTE: Before you change BIOS Setup program, it is recommended that you write down the BIOS Setup program screen information for future reference. Use the BIOS Setup program for the following purposes: Get information about the hardware installed in your computer, such as the amount of RAM and the size of the hard drive. Change the system configuration information. Set or change a user-selectable option, such as the user password, type of hard drive installed, and enabling or disabling base devices.
BIOS overview
The BIOS manages data flow between the computer's operating system and attached devices such as hard disk, video adapter, keyboard, mouse, and printer.
Updating the BIOS in Windows
Prerequisites It is recommended to update your BIOS (System Setup) when you replace the system board or if an update is available. For laptops, ensure that your computer battery is fully charged and connected to a power before initiating a BIOS update.
About this task NOTE: If BitLocker is enabled, it must be suspended prior to updating the system BIOS, and then re enabled after the BIOS update is completed.
Steps 1. Restart the computer. 2. Go to Dell.com/support.
Enter the Service Tag or Express Service Code and click Submit. Click Detect Product and follow the instructions on screen. 3. If you are unable to detect or find the Service Tag, click Choose from all products. 4. Choose the Products category from the list.
NOTE: Choose the appropriate category to reach the product page.
5. Select your computer model and the Product Support page of your computer appears. 6. Click Get drivers and click Drivers and Downloads.
The Drivers and Downloads section opens. 7. Click Find it myself. 8. Click BIOS to view the BIOS versions. 9. Identify the latest BIOS file and click Download. 10. Select your preferred download method in the Please select your download method below window, click Download File.
The File Download window appears. 11. Click Save to save the file on your computer.

System setup

12. Click Run to install the updated BIOS settings on your computer. Follow the instructions on the screen.
Updating BIOS on systems with BitLocker enabled
CAUTION: If BitLocker is not suspended before updating the BIOS, the next time you reboot the system it will not recognize the BitLocker key. You will then be prompted to enter the recovery key to progress and the system will ask for this on each reboot. If the recovery key is not known this can result in data loss or an unnecessary operating system re-install. For more information on this subject, see Knowledge Article: https:// www.dell.com/support/article/sln153694
Updating your system BIOS using a USB flash drive
About this task If the computer cannot load into Windows but there is still a need to update the BIOS, download the BIOS file using another computer and save it to a bootable USB flash drive.
NOTE: You must use a bootable USB flash drive. For more information, see the knowledge base article SLN143196.
Steps 1. Download the BIOS update .exe file to another computer. 2. Copy the .exe file onto the bootable USB flash drive. 3. Insert the USB flash drive into the computer that requires the BIOS update. 4. Restart the computer and press F12 when the Dell logo appears to display the One Time Boot Menu. 5. Using arrow keys, select USB Storage Device and press Enter. 6. The computer restarts to a Diag C:\> prompt. 7. Run the file by typing the complete filename and press Enter. 8. The BIOS Update Utility is displayed. Follow the on-screen instructions.

Figure 1. DOS BIOS Update Screen

System setup

Entering BIOS setup program

About this task Turn on (or restart) your computer and press F2 immediately.

Navigation keys

NOTE: For most of the System Setup options, changes that you make are recorded but do not take effect until you restart the system.

Keys
Up arrow Down arrow Enter Spacebar Tab Esc

Navigation
Moves to the previous field. Moves to the next field. Selects a value in the selected field (if applicable) or follow the link in the field. Expands or collapses a drop-down list, if applicable. Moves to the next focus area. Moves to the previous page until you view the main screen. Pressing Esc in the main screen displays a message that prompts you to save any unsaved changes and restarts the system.

Boot Sequence
Boot sequence enables you to bypass the System Setup�defined boot device order and boot directly to a specific device (for example: optical drive or hard drive). During the Power-on Self-Test (POST), when the Dell logo appears, you can: Access System Setup by pressing F2 key Bring up the one-time boot menu by pressing F12 key. The one-time boot menu displays the devices that you can boot from including the diagnostic option. The boot menu options are:
Removable Drive (if available) STXXXX Drive
NOTE: XXXX denotes the SATA drive number.
Optical Drive (if available) SATA Hard Drive (if available) Diagnostics
NOTE: Choosing Diagnostics, displays the SupportAssist screen.
The boot sequence screen also displays the option to access the System Setup screen.

System setup options

NOTE: Depending on your computer and its installed devices, the items that are listed in this section may or may not appear.

Table 3. System setup options--System information menu

Overview

OptiPlex 7090 Micro

BIOS Version

Displays the BIOS version number.

Service Tag

Displays the Service Tag of the computer.

System setup

Table 3. System setup options--System information menu (continued)

Overview

Asset Tag

Displays the Asset Tag of the computer.

Manufacture Date

Displays the manufacture date of the computer.

Ownership Date

Displays the ownership date of the computer.

Express Service Code

Displays the express service code of the computer.

Ownership Tag

Displays the Ownership Tag of the computer.

Signed Firmware Update

Displays whether the Signed Firmware Update is enabled on your computer.

Processor Information

Processor Type

Displays the processor type.

Maximum Clock Speed

Displays the maximum processor clock speed.

Minimum Clock Speed

Displays the minimum processor clock speed.

Current Clock Speed

Displays the current processor clock speed.

Core Count

Displays the number of cores on the processor.

Processor ID

Displays the processor identification code.

Processor L2 Cache

Displays the processor L2 Cache size.

Processor L3 Cache

Displays the processor L3 Cache size.

Microcode Version

Displays the microcode version.

Intel Hyper-Threading Capable

Displays whether the processor is Hyper-Threading (HT) capable.

64-Bit Technology

Displays whether 64-bit technology is used.

Memory Information

Memory Installed

Displays the total computer memory installed.

Memory Available

Displays the total computer memory available.

Memory Speed

Displays the memory speed.

Memory Channel Mode

Displays single or dual channel mode.

Memory Technology

Displays the technology that is used for the memory.

DIMM 1 Size

Displays the DIMM 1 memory size.

DIMM 2 Size

Displays the DIMM 2 memory size.

DIMM 3 Size

Displays the DIMM 3 memory size.

DIMM 4 Size

Displays the DIMM 4 memory size.

Devices Information

Video Controller

Displays the video controller type of the computer.

Video Memory

Displays the video memory information of the computer.

Wi-Fi Device

Displays the wireless device information of the computer.

Native Resolution

Displays the native resolution of the computer.

Video BIOS Version

Displays the video BIOS version of the computer.

Audio Controller

Displays the audio controller information of the computer.

Bluetooth Device

Displays the Bluetooth device information of the computer.

LOM MAC Address

Displays the LAN On Motherboard (LOM) MAC address of the computer.

dGPU Video Controller

Displays the discrete video controller type of the computer.

Slot 1

Displays the SATA hard drive information of the computer.

System setup

Table 3. System setup options--System information menu (continued)

Overview

Slot 2

Displays the SATA hard drive information of the computer.

Slot 3

Displays the SATA hard drive information of the computer.

Slot 4

Displays the SATA hard drive information of the computer.

Table 4. System setup options--Boot Configuration menu

Boot Configuration

Boot Sequence

Boot Mode: UEFI only

Displays the boot mode.

Boot Sequence

Displays the boot sequence.

Secure Digital (SD) Card Boot

Enable or disable the SD card read-only boot.

By default, the Secure Digital (SD) Card Boot option is not enabled.

Secure Boot Enable Secure Boot

Enable or disable the secure boot feature. By default, the option is not enabled.

Secure Boot Mode

Enable or disable to change the secure boot mode options. By default, the Deployed Mode is enabled.

Expert Key Management Enable Custom Mode

Enable or disable custom mode. By default, the custom mode option is not enabled.

Custom Mode Key Management

Select the custom values for expert key management.

Table 5. System setup options--Integrated Devices menu

Integrated Devices

Date/Time Audio

Displays the current date in MM/DD/YYYY format and current time in HH:MM:SS AM/PM format.

Enable Audio

Enable or disable the integrated audio controller. By default, all the options are enabled.

Serial Port

Serial Port Configuration

Enable or disable the serial port address.
By default, the COM1: Port is configured at 3F8h with IRQ4 option is enabled.

USB Configuration

Enable or disable booting from USB mass storage devices through the boot sequence or boot menu.
By default, all the options are enabled.

Front USB Configuration Rear USB Configuration Dust Filter Maintenance

Enable or disable the individual front USB ports. By default, all the options are enabled. Enable or disable the individual rear USB ports. By default, all the options are enabled. Enable or disable the dust filter maintenance.

System setup

Table 5. System setup options--Integrated Devices menu (continued) Integrated Devices
By default, the Disabled option is enabled.

Table 6. System setup options--Storage menu

Storage

SATA Operation

Enable or disable the operating mode of the integrated SATA hard drive controller.
By default, the AHCIoption is enabled.

Storage Interface Port Enablement

Enable or disable the onboard drives. By default, all the options are enabled.

SMART Reporting Enable SMART Reporting

Enable or disable Self-Monitoring, Analysis, and Reporting Technology (SMART) during computer startup.
By default, the Enable SMART Reporting option is not enabled.

Drive Information SATA-0 Type Device SATA-1 Type Device SATA-2 Type Device SATA-3 Type Device M.2 PCIe SSD-0 Type Device Enable MediaCard Secure Digital (SD) Card

Displays the SATA HDD type information of the computer. Displays the SATA HDD device information of the computer.
Displays the SATA HDD type information of the computer. Displays the SATA HDD device information of the computer.
Displays the SATA HDD type information of the computer. Displays the SATA HDD device information of the computer.
Displays the SATA HDD type information of the computer. Displays the SATA HDD device information of the computer.
Displays the M.2 PCIe SSD-0 type information of the computer. Displays the M.2 PCIe SSD-0 device information of the computer.
Enable or disable the SD card. By default, the Secure Digital (SD) Card option is enabled.

Secure Digital (SD) Card Read-Only Mode Enable or disable the SD card read-only mode.
By default, the Secure Digital (SD) Card Read-Only Mode option is not enabled.

Table 7. System setup options--Display menu

Display

Multi-Display

Enable Multi-Display

Enable or disable the Enable Multi-Display buttons on the computer.

System setup

Table 7. System setup options--Display menu (continued)

Display

By default, the option is enabled.

Primary Display Video Primary Display

Determines the primary display when multiple controllers are available on the computer
By default, the Auto option is enabled.

Full Screen Logo

Enable or disable full screen logo. By default, the option is not enabled.

Table 8. System setup options--Connection menu

Connection

Network Controller Configuration Integrated NIC

Controls the on-board LAN controller. By default, the Enabled with PXE option is enabled.

Wireless Device Enable WLAN

Enable or disable the internal WLAN device By default, the option enabled.

Bluetooth

Enable or disable the internal Bluetooth device By default, the option enabled.

Enable UEFI Network Stack

Enable or disable UEFI Network Stack and controls the on-board LAN Controller.
By default, the option is enabled.

HTTPs Boot Feature HTTPs Boot

Enable or disable the HTTPs Boot feature. By default, the HTTPs Boot option is enabled.

HTTPs Boot Mode

With Auto Mode, the HTTPs Boot extracts Boot URL from the DHCP. With Manual Mode, the HTTPs Boot reads Boot URL from the user-provided data.
By default, the Auto Mode option is enabled.

Table 9. System setup options--Power menu

Power

USB PowerShare Enable USB PowerShare

Enable or disable the USB PowerShare. By default, the Enable USB PowerShare option is enabled

USB Wake Support Enable USB Wake Support

When enabled, you can use the USB devices like a mouse or keyboard to wake your computer from standby.
By default, the option is enabled.

AC Behavior AC Recovery

Enables the system to turn on automatically, when AC is inserted. By default, the Power Off option is enabled.

System setup

Table 9. System setup options--Power menu (continued)

Power Active State Power Management Aspm

Enables or disables the Active State Power Management (ASPM) level By default, the Auto option is enabled.

Block Sleep

Enables to block entering sleep (S3) mode in the operating system. By default, the Block Sleep option is disabled.

Deep Sleep Control

Enable or disable the Deep Sleep mode support. By default, the Disabled option is enabled.

Fan Control Override

Enable or disable the fan control override feature. By default, the option is disabled.

Intel Speed Shift Technology

Enable or disable the Intel speed shift technology support. By default, the Intel Speed Shift Technology option is enabled.

Table 10. System setup options--Security menu

Security

TPM 2.0 Security TPM 2.0 Security On

Enable or disable TPM 2.0 security options. By default, the TPM 2.0 Security On option is enabled.

Attestation Enable

Enables to control whether the Trusted Platform Module (TPM) Endorsement Hierarchy is available to the operating system.
By default, the Attestation Enable option is enabled.

Key Storage Enable

Enables to control whether the Trusted Platform Module (TPM) Storage Hierarchy is available to the operating system.
By default, the Key Storage Enable option is enabled.

SHA-256

BIOS and the TPM will use the SHA-256 hash algorithm to extend measurements into the TPM PCRs during BIOS boot.
By default, the SHA-256 option is enabled.

Clear

Enables to clear the TPM owner information and returns the TPM to the default state.
By default, the Clear option is disabled.

PPI ByPass for Clear Commands

Controls the TPM Physical Presence Interface (PPI). By default, the PPI ByPass for clear Commands option is disabled.

Chassis intrusion

Controls the chassis intrusion feature. By default, the option is disabled.

SMM Security Mitigation

Enable or disable SMM Security Mitigation. By default, the option is enabled.

Data Wipe on Next Boot Start Data Wipe

Enable or disable the data wipe on next boot. By default, the option is disabled.

Absolute

Enable or disable or permanently disable the BIOS module interface of the optional Absolute Persistence Module service from Absolute software.

System setup

Table 10. System setup options--Security menu (continued)

Security

By default, the Enable Absolute option is enabled.

UEFI Boot Path Security

Controls whether or not the computer will prompt the user to enter the admin password (if set) when booting to a UEFI boot device from the F12 boot menu.
By default, the Always Except Internal HDD option is enabled.

Table 11. System setup options--Passwords menu

Passwords

Admin Password

Set, change, or delete the administrator password.

System Password

Set, change, or delete the computer password.

Internal HDD-0 Password

Set, change, or delete the Internal HDD-0 password.

NVMe SSD0

Set, change, or delete the NVMe SSD0 password.

Password Configuration

Upper Case Letter

Reinforces password must have at least one upper case letter.

By default, the option is disabled.

Lower Case Letter

Reinforces password must have at least one lower case letter. By default, the option is disabled.

Digit

Reinforces password must have at least one digit. By default, the option is disabled.

Special Character

Reinforces password must have at least one special character. By default, the option is disabled.

Minimum Characters Password Bypass

Set the minimum characters allowed for password.
When enabled, this always prompts for computer and internal hard drive passwords when powered on from the off state.
By default, the Disabled option is enabled.

Password Changes Enable Non-Admin Password Changes

Enable or disable to change computer and hard drive password without the need for admin password.
By default, the option is enabled.

Admin Setup Lockout Enable Admin Setup Lockout

Enables administrators control over how their users can or cannot access BIOS setup.
By default, the option is disabled.

Master Password Lockout Enable Master Password Lockout

When enabled, this will disable the master password support. By default, the option is disabled.

Allow Non-Admin PSID Revert Enable Allow Non-Admin PSID Revert

Controls access to the Physical Security ID (PSID) revert of NVMe hard-drives from the Dell Security Manager prompt.
By default, the option is disabled.

System setup

Table 12. System setup options--Update, Recovery menu

Update, Recovery UEFI Capsule Firmware Updates

Enable or disable BIOS updates through UEFI capsule update packages. By default, the option is enabled.

BIOS Recovery from Hard Drive

Enables the user to recover from certain corrupted BIOS conditions from a recovery file on the user primary hard drive or an external USB key.
By default, the option is enabled.

BIOS Downgrade Allow BIOS Downgrade

Enable or disable the flashing of the computer firmware to previous revision is blocked.
By default, the option is enabled.

SupportAssist OS Recovery

Enable or disable the boot flow for SupportAssist OS Recovery tool in the event of certain computer errors.
By default, the option is enabled.

BIOSConnect

Enable or disable cloud Service OS recovery if the main operating system fails to boot with the number of failures equal to or greater than the value specified by the Auto OS Recovery Threshold setup option and local Service OS does not boot or is not installed.
By default, the option is enabled.

Dell Auto OS Recovery Threshold

Controls the automatic boot flow for SupportAssist System Resolution Console and for Dell OS Recovery Tool.
By default, the threshold value is set to 2.

Table 13. System setup options--System Management menu

System Management Service Tag Asset Tag Wake on LAN/WLAN

Display the Service Tag of the computer. Create a computer Asset Tag. Enable or disable the computer to power on by special LAN signals when it receives a wakeup signal from the WLAN. By default, the Disabled option is selected.

Auto on Time

Enable to set the computer to turn on automatically every day or on a preselected date and time. This option can be configured only if the Auto On Time is set to Everyday, Weekdays, or Selected Days.
By default, the option is disabled.

Intel AMT Capability Enable Intel AMT Capability

Enable or disable the Intel AMT capabilty. By default, the Restrict MEBx Access option is enabled.

MEBx Hotkey

Enable or disable MEBx hotkey. By default, the option is disabled.

USB Provision Enable USB Provision

Enable or disable the Intel AMT provisioning using the local provisioning file through a USB storage device.
By default, the option is disabled.

SERR Messages

Enable or disable SERR messages.

System setup

Table 13. System setup options--System Management menu (continued) System Management
By default, the option is enabled.

Table 14. System setup options--Keyboard menu

Keyboard

Keyboard Errors Enable Keyboard Error Detection

Enable or disable the keyboard error detection. By default, the option is enabled.

Numlock LED Enable Numlock LED

Enable or disable Numlock LED. By default, the option is enabled.

Device Configuration Hotkey Access Device Configuration Hotkey Access

Enable or disable users to access device configuration by using hotkeys. By default, the option is enabled.

Table 15. System setup options--Pre-boot Behavior menu

Pre-boot Behavior

Warning and Errors

Enable or disable the action to be done when a warning or error is encountered. By default, the Prompt on Warnings and Errors option is enabled.

Fastboot

Enable to set the speed of the boot process. By default, the Thorough option is enabled.

Extend BIOS POST Time

Set the BIOS POST time. By default, the 0 seconds option is enabled.

Table 16. System setup options--Virtualization menu

Virtualization

Intel Virtualization Technology

Enable Intel Virtualization Technology (VT)

Specify whether a Virtual Machine Monitor (VMM) can utilize the additional hardware capabilities that are provided by Intel Virtualization Technology.

By default, the option is enabled.

VT for Direct I/O

Specify whether a Virtual Machine Monitor (VMM) can utilize the additional hardware capabilities that are provided by Intel Virtualization Technology for Direct I/O.
By default, the option is enabled.

Intel Trusted Execution Technology (TXT)
Enable Intel Trusted Execution Technology (TXT)

Specifies whether a measured Virtual Machine Monitor (MVMM) can utilize the additional hardware capabilities that are provided by Intel Trusted Execution Technology.
By default, the option is disabled.

System setup

Table 17. System setup options--Performance menu

Performance

Multi Core Support

Active Cores

Enables to change the number of CPU cores available to the operating system. By default, the All Cores options are enabled.

Intel SpeedStep

Enable Intel SpeedStep Technology

Enables the computer to dynamically adjust processor voltage and core frequency, decreasing average power consumption and heat production.
By default, the option is enabled.

C-States Control

Enable C-State Control

Enable or disable additional processor sleep states. By default, the option is enabled.

Intel Turbo Boost Technology

Enable Intel Turbo Boost Technology

Enable or disable Intel TurboBoost mode of the processor. By default, the option is enabled.

Intel Hyper-Threading Technology

Enable Intel Hyper-Threading Technology Enable or disable Hyper-Threading in the processor. By default, the option is enabled.

Table 18. System setup options--System Logs menu

System Logs

BIOS Event Log

Clear BIOS Event Log

Display BIOS events.

By default, the Keep option is enabled.

Clearing CMOS settings

About this task CAUTION: Clearing CMOS settings will reset the BIOS settings on your computer.

Steps 1. Turn off your computer. 2. Press and hold the power button for 30 seconds to reset the coin-cell battery. 3. Turn on your computer.

System and setup password

Table 19. System and setup password Password type System password Setup password

Description Password that you must enter to log on to your system.
Password that you must enter to access and make changes to the BIOS settings of your computer.

System setup

You can create a system password and a setup password to secure your computer.
CAUTION: The password features provide a basic level of security for the data on your computer.
CAUTION: Anyone can access the data stored on your computer if it is not locked and left unattended.
NOTE: System and setup password feature is disabled.
Assigning a system setup password
Prerequisites You can assign a new System or Admin Password only when the status is in Not Set.
About this task To enter the system setup, press F2 immediately after a power-on or reboot.
Steps 1. In the System BIOS or System Setup screen, select Security and press Enter.
The Security screen is displayed. 2. Select System/Admin Password and create a password in the Enter the new password field.
Use the following guidelines to assign the system password: A password can have up to 32 characters. The password can contain the numbers 0 through 9. Only lower case letters are valid, upper case letters are not allowed. Only the following special characters are allowed: space, ("), (+), (,), (-), (.), (/), (;), ([), (\), (]), (`). 3. Type the system password that you entered earlier in the Confirm new password field and click OK. 4. Press Esc and a message prompts you to save the changes. 5. Press Y to save the changes. The computer reboots.
Deleting or changing an existing system setup password
Prerequisites Ensure that the Password Status is Unlocked (in the System Setup) before attempting to delete or change the existing System and Setup password. You cannot delete or change an existing System or Setup password, if the Password Status is Locked.
About this task To enter the System Setup, press F2 immediately after a power-on or reboot.
Steps 1. In the System BIOS or System Setup screen, select System Security and press Enter.
The System Security screen is displayed. 2. In the System Security screen, verify that Password Status is Unlocked. 3. Select System Password, alter or delete the existing system password and press Enter or Tab. 4. Select Setup Password, alter or delete the existing setup password and press Enter or Tab.
NOTE: If you change the System and/or Setup password, re enter the new password when prompted. If you delete the System and Setup password, confirm the deletion when prompted.
5. Press Esc and a message prompts you to save the changes. 6. Press Y to save the changes and exit from System Setup.
The computer restarts.

System setup

Clearing BIOS (System Setup) and System passwords
About this task To clear the system or BIOS passwords, contact Dell technical support as described at www.dell.com/contactdell.
NOTE: For information on how to reset Windows or application passwords, refer to the documentation accompanying Windows or your application.

System setup

5
Troubleshooting

SupportAssist diagnostics
About this task The SupportAssist diagnostics (previously known as ePSA diagnostics) performs a complete check of your hardware. The SupportAssist diagnostics is embedded in the BIOS and is launched by it internally. The SupportAssist diagnostics provides a set of options for particular devices or device groups. It allows you to: Run tests automatically or in an interactive mode. Repeat tests Display or save test results Run thorough tests to introduce additional test options and provide extra information about the failed device(s) View status messages that indicate if the tests are completed successfully View error messages that indicate if problems were encountered during the test
NOTE: Some tests are meant for specific devices and require user interaction. Ensure that you are present in front of the computer when the diagnostic tests are performed. For more information, see SupportAssist Pre-Boot System Performance Check.
Display built-in self test
About this task The following procedure provides the instructions on how to run the built-in self test for the display:
Steps 1. Turn off your computer. 2. Press and hold the display built-in self test button. 3. Press and hold the power button. 4. Release the power button. 5. Hold the display built-in self test button until the test starts.
Diagnostics
Power status indicator light: Indicates the power status. Solid amber--The system is unable to boot to the operating system. This indicates that the power supply or another device in the system is failing. Blinking white--The system is unable to boot to the operating system. This indicates that the power supply is normal but another device in the system is failing or not installed properly.
NOTE: See the light patterns to determine if the device that is failing.
Off--System is in hibernation or turned off. The power status indicator blinks amber along with beep codes indicating failures. For example, the power status indicator blinks amber two times followed by a pause, and then blinks white three times followed by a pause. This 2,3 pattern continues until the system is turned off indicating the Recovery image is not found.

Troubleshooting

The following table shows different light patterns and what they indicate:

Table 20. Diagnostic LED behavior

Blinking pattern

Amber

White

Problem description

Suggested resolution

MBIST: TPM Detection Failure
MBIST:SPI flash, Unrecoverable SPI flash failure

Replace the system board. Replace the system board.

i-Fuse: Failure EC unable to program i-Fuse Replace the system board.

EC internal: Failure Generic catch-all for

Disconnect all power source (AC,

ungraceful EC code flow errors

battery, coin-cell) and press and hold

the power button to drain flea power.

Processor failure

Run the Intel CPU diagnostics tools. If problem continues, replace the system board.

System board: BIOS or ROM (Read-Only Flash the latest BIOS version. If problem

Memory) failure

continues, replace the system board.

No memory or RAM (Random-Access

Check and confirm that the memory

Memory) detected

module is installed properly. If problem

continues, replace the memory module.

Memory or RAM (Random-Access Memory) Reset the memory module. If problem

failure

continues, replace the memory module.

Invalid memory installed

Reset the memory module. If problem continues, replace the memory module.

System-board or chipset error

Flash the latest BIOS version. If problem

continues, replace the system board.

Display failure

Flash the latest BIOS version. If problem continues, replace the LCD module.

LCD power rail failure

Replace the system board.

CMOS battery failure

Reset the CMOS battery connection. If problem continues, replace the RTS battery.

PCI, video card/chip failure

Replace the system board.

Recovery image not found

Flash the latest BIOS version. If problem continues, replace the system board.

Recovery image found but invalid

Flash the latest BIOS version. If problem

continues, replace the system board.

Power-rail failure

EC ran into power sequencing failure. If problem continues, replace the system board.

System BIOS Flash incomplete

Flash corruption detected by BIOS. If

problem continues, replace the system

board.

Management Engine (ME) error Memory DIMM power rail failure

Timeout error displayed while waiting on ME to reply to HECI message. If problem continues, replace the system board.
Replace the system board.

CPU power cable connection issue

Initiate PSU BIST. If problem persists,

replace the system board.

Troubleshooting

Recovering the operating system
When your computer is unable to boot to the operating system even after repeated attempts, it automatically starts Dell SupportAssist OS Recovery. Dell SupportAssist OS Recovery is a standalone tool that is preinstalled in all Dell computers installed with Windows 10 operating system. It consists of tools to diagnose and troubleshoot issues that may occur before your computer boots to the operating system. It enables you to diagnose hardware issues, repair your computer, back up your files, or restore your computer to its factory state. You can also download it from the Dell Support website to troubleshoot and fix your computer when it fails to boot into their primary operating system due to software or hardware failures. For more information about the Dell SupportAssist OS Recovery, see Dell SupportAssist OS Recovery User's Guide at www.dell.com/support.
Flashing BIOS (USB key)
Steps 1. Follow the procedure from step 1 to step 7 in "Flashing the BIOS" to download the latest BIOS setup program file. 2. Create a bootable USB drive. For more information see the knowledge base article 000145519 at www.dell.com/support. 3. Copy the BIOS setup program file to the bootable USB drive. 4. Connect the bootable USB drive to the computer that needs the BIOS update. 5. Restart the computer and press F12 when the Dell logo is displayed on the screen. 6. Boot to the USB drive from the One Time Boot Menu. 7. Type the BIOS setup program filename and press Enter. 8. The BIOS Update Utility appears. Follow the instructions on the screen to complete the BIOS update.
Flashing the BIOS
About this task You may need to flash (update) the BIOS when an update is available or when you replace the system board. Follow these steps to flash the BIOS:
Steps 1. Turn on your computer. 2. Go to www.dell.com/support. 3. Click Product support, enter the Service Tag of your computer, and then click Search.
NOTE: If you do not have the Service Tag, use the product ID or manually browse for your computer model.
4. Click Drivers & downloads > Find drivers. 5. Select the operating system installed on your computer. 6. Scroll down the page and expand BIOS. 7. Click Download to download the latest version of the BIOS for your computer. 8. After the download is complete, navigate to the folder where you saved the BIOS update file. 9. Double-click the BIOS update file icon and follow the instructions on the screen.

Troubleshooting

System error messages

Table 21. System error messages

System message

Description

Alert! Previous attempts at booting this system have failed at checkpoint [nnnn]. For help in resolving this problem, please note this checkpoint and contact Dell Technical Support

The computer failed to complete the boot routine three consecutive times for the same error.

CMOS checksum error

RTC is reset, BIOS Setup default has been loaded.

CPU fan failure

CPU fan has failed.

System fan failure

System fan has failed.

Hard-disk drive failure

Possible hard disk drive failure during POST.

Keyboard failure

Keyboard failure or loose cable. If reseating the cable does not solve the problem, replace the keyboard.

No boot device available

No bootable partition on hard disk drive, the hard disk drive cable is loose, or no bootable device exists.
If the hard drive is your boot device, ensure that the cables are connected and that the drive is installed properly and partitioned as a boot device.
Enter system setup and ensure that the boot sequence information is correct.

No timer tick interrupt

A chip on the system board might be malfunctioning or motherboard failure.

NOTICE - Hard Drive SELF MONITORING SYSTEM has reported that a parameter has exceeded its normal operating range. Dell recommends that you back up your data regularly. A parameter out of range may or may not indicate a potential hard drive problem

S.M.A.R.T error, possible hard disk drive failure.

WiFi power cycle
About this task If your computer is unable to access the internet due to WiFi connectivity issues a WiFi power cycle procedure may be performed. The following procedure provides the instructions on how to conduct a WiFi power cycle:
NOTE: Some ISPs (Internet Service Providers) provide a modem/router combo device.
Steps 1. Turn off your computer. 2. Turn off the modem. 3. Turn off the wireless router. 4. Wait for 30 seconds. 5. Turn on the wireless router. 6. Turn on the modem. 7. Turn on your computer.

Troubleshooting

Flea power release
About this task Flea power is the residual static electricity that remains on the computer even after it has been powered off and the battery has been removed. The following procedure provides the instructions on how to conduct flea power release:
Steps 1. Turn off your computer. 2. Disconnect the power adapter from your computer. 3. Press and hold the power button for 15 seconds to drain the flea power. 4. Connect the power adapter to your computer. 5. Turn on your computer.

Troubleshooting

Getting help and contacting Dell

Self-help resources

You can get information and help on Dell products and services using these self-help resources:

Table 22. Self-help resources Self-help resources Information about Dell products and services

Resource location www.dell.com

My Dell

Tips

Contact Support Online help for operating system

In Windows search, type Contact Support, and press Enter.
www.dell.com/support/windows www.dell.com/support/linux

Access top solutions, diagnostics, drivers and downloads, and learn more about your computer through videos, manuals and documents.

Your Dell computer is uniquely identified by a Service Tag or Express Service Code. To view relevant support resources for your Dell computer, enter the Service Tag or Express Service Code at www.dell.com/support.
For more information on how to find the Service Tag for your computer, see Locate the Service Tag on your computer.

Dell knowledge base articles for a variety of computer concerns

1. Go to www.dell.com/support.
2. On the menu bar at the top of the Support page, select Support > Knowledge Base.
3. In the Search field on the Knowledge Base page, type the keyword, topic, or model number, and then click or tap the search icon to view the related articles.

Contacting Dell
To contact Dell for sales, technical support, or customer service issues, see www.dell.com/contactdell. NOTE: Availability varies by country/region and product, and some services may not be available in your country/region.
NOTE: If you do not have an active Internet connection, you can find contact information about your purchase invoice, packing slip, bill, or Dell product catalog.

Getting help and contacting Dell