Lenovo M800 M900 Tower Hmm User Manual Hardware Maintenance (HMM) (Tower Form Factor) Think Centre M800, Type (10FW, 10FV, 10FC, 10FD) Desktop (Think Centre) 10FG

2016-08-12

User Manual: Lenovo M800 M900 Tower Hmm Hardware Maintenance Manual (HMM) - (Tower Form Factor) ThinkCentre M800, M900 Type (10FW, 10FV, 10FC, 10FD) M900 Desktop (ThinkCentre) - Type 10FG ThinkCentre M900 (type 10FG)

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ThinkCentre M800 and M900
Hardware Maintenance Manual

Machine Types: 10FC, 10FD, 10FV, and 10FW

Note: Before using this information and the product it supports, be sure to read and understand the Chapter
1 “Read this first: Important safety information” on page 1 and Appendix F “Notices” on page 153.

Second Edition (December 2015)
© Copyright Lenovo 2015.
LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant a General Services Administration
“GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-35F-05925.

Contents
About this manual. . . . . . . . . . . . v
Chapter 1. Read this first: Important
safety information. . . . . . . . . . . . 1
Power cords and power adapters . . . .
General safety . . . . . . . . . . . .
Electrical safety . . . . . . . . . . .
Safety inspection guide . . . . . . . .
Handling electrostatic discharge-sensitive
devices . . . . . . . . . . . . . .
Grounding requirements . . . . . . . .
Safety notices (multi-lingual translations) .

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Chapter 2. Product overview . . . . .
Hardware locations . . . . . . . . . .
Front view. . . . . . . . . . . .
Rear view . . . . . . . . . . . .
Computer components . . . . . .
Major FRUs and CRUs. . . . . . .
Parts on the system board . . . . .
Machine type and model label . . . .
Features . . . . . . . . . . . . . .
Specifications . . . . . . . . . . . .
Programs . . . . . . . . . . . . . .
Accessing a program on your computer
Installing a program that is ready to be
installed . . . . . . . . . . . .
An introduction to Lenovo programs .

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Chapter 3. Using your computer . . .

Registering your computer . . . . . . . . .
Setting the computer volume . . . . . . . .
Adding an icon to the Windows notification area
Using a disc. . . . . . . . . . . . . . .
Guidelines about using the optical drive . .
Handling and storing a disc . . . . . . .
Playing and removing a disc . . . . . .
Recording a disc . . . . . . . . . . .
Connecting to a network . . . . . . . . . .
Connecting to an Ethernet LAN . . . . .
Connecting to a wireless LAN . . . . . .
Connecting to a Bluetooth-enabled device .

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Chapter 4. You and your computer . .

Arranging your workspace . . . . . . . . . .
Glare and lighting . . . . . . . . . . . .
Air circulation . . . . . . . . . . . . .

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Electrical outlet locations and cable lengths
Comfort . . . . . . . . . . . . . .
Accessibility information . . . . . . . . . .
Cleaning your computer . . . . . . . . . .
Maintenance . . . . . . . . . . . . . .
Basic maintenance tips . . . . . . . .
Good maintenance practices . . . . . .
Keeping your computer current . . . . .
Moving your computer . . . . . . . . . .

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Chapter 5. Security . . . . . . . . . .

Locking your computer . . . . . . . . .
Locking the computer cover . . . . .
Attaching a Kensington-style cable lock .
Attaching a cable lock . . . . . . . .
Viewing and changing security settings in the
Setup Utility program . . . . . . . . . .
Preventing unauthorized access to your
computer . . . . . . . . . . . . . . .
Using fingerprint authentication . . . . . .
Using and understanding firewalls . . . . .
Protecting data against viruses . . . . . .
Computrace Agent software embedded in
firmware . . . . . . . . . . . . . . .
Trusted Platform Module (TPM) . . . . . .

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Chapter 6. Advanced configuration . .

Using the Setup Utility program . . . . . . . .
Starting the Setup Utility program . . . . .
Enabling or disabling a device . . . . . . .
Enabling or disabling the Automatic Power On
features . . . . . . . . . . . . . . .
Enabling or disabling ErP LPS compliance
mode . . . . . . . . . . . . . . . .
Changing ICE Performance Mode . . . . .
Enabling or disabling the ICE Thermal Alert
feature . . . . . . . . . . . . . . . .
Enabling or disabling the Configuration
Change Detection feature . . . . . . . .
Using the cover presence switch. . . . . .
Using BIOS passwords . . . . . . . . .
Selecting a startup device . . . . . . . .
Exiting the Setup Utility program . . . . . .
Updating the BIOS . . . . . . . . . . . . .
Recovering from a BIOS update failure . . . . .

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Chapter 7. Troubleshooting,
diagnostics, and recovery . . . . . .

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Basic procedure for resolving computer
problems . . . . . . . . . . . . . .
Troubleshooting . . . . . . . . . . .
Startup problems . . . . . . . . .
Audio problems . . . . . . . . .
CD problems . . . . . . . . . .
DVD problems . . . . . . . . . .
Intermittent problems . . . . . . .
Storage drive problems . . . . . .
Networking problems . . . . . . .
Performance problems. . . . . . .
Serial connector cannot be accessed .
USB device problems . . . . . . .
Software and driver problems . . . .
Diagnostics . . . . . . . . . . . . .
Lenovo Solution Center . . . . . .
UEFI diagnostic program . . . . . .
Recovery information . . . . . . . . .
Recovery information for Windows 7 .
Recovery information for Windows 10.

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Chapter 8. Service checkout and
symptom-to-FRU index . . . . . . . .

Service checkout. . . . . . . .
Problem determination tips . .
Symptom-to-FRU index . . . . .
Hard disk drive boot error . .
Power supply problems . . .
Beep symptoms . . . . . .
POST error codes. . . . . .
Miscellaneous error conditions
Undetermined problems . . .

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Chapter 9. Installing or replacing
hardware . . . . . . . . . . . . . . .
Handling static-sensitive devices . . .
Installing or replacing hardware . . . .
Installing external options . . . .
Removing the computer cover. . .
Replacing the front bezel . . . . .
Replacing the computer handle . .
Replacing the optical drive . . . .
Replacing the storage drive . . . .
Replacing the USB assembly . . .
Replacing the card reader . . . .
Replacing the front-access storage
enclosure . . . . . . . . . . .
Replacing the front audio and USB
assembly . . . . . . . . . . .
Replacing the thermal sensor . . .
Replacing the internal speaker. . .

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ThinkCentre M800 and M900 Hardware Maintenance Manual

Replacing a memory module . . . . .
Replacing the PCI card . . . . . . .
Replacing the PCI adapter card . . . .
Replacing the Wi-Fi card . . . . . . .
Replacing the Wi-Fi antenna . . . . .
Replacing a PCI Express card . . . . .
Replacing the coin-cell battery . . . .
Replacing the heat sink and fan assembly
Replacing the microprocessor . . . . .
Replacing the system board . . . . .
Replacing the power supply assembly .
Replacing the cover presence switch . .
Replacing the rear fan assembly . . . .
Completing the parts replacement . . .

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Chapter 10. Getting information, help,
and service . . . . . . . . . . . . . 135
Information resources . . . . . . . .
Accessing the user guide in various
languages. . . . . . . . . . .
Windows help system . . . . . .
Safety and warranty . . . . . . .
Lenovo Web site . . . . . . . .
Lenovo Support Web site. . . . .
Frequently asked questions . . . .
Help and service . . . . . . . . . .
Calling for service. . . . . . . .
Using other services . . . . . .
Purchasing additional services . .

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Appendix A. Regulatory
information . . . . . . . . . . . . .
Export classification notice . . . . . . . .
Electronic emissions notices . . . . . . .
Federal Communications Commission
Declaration of Conformity . . . . . .
Eurasian compliance mark . . . . . . . .
Brazil audio notice . . . . . . . . . . .
Mexico wireless-radio compliance information
Additional regulatory information . . . . .

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Appendix B. WEEE and recycling
information . . . . . . . . . . . . .
Important WEEE information . . . . . . .
Recycling information for Japan . . . . . .
Recycling information for Brazil . . . . . .
Battery recycling information for Taiwan . . .
Battery recycling information for the European
Union . . . . . . . . . . . . . . . .

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Appendix C. Restriction of Hazardous
Substances Directive (RoHS) . . . . 147

European Union RoHS
Turkish RoHS . . . .
Ukraine RoHS . . . .
India RoHS . . . . .
China RoHS. . . . .

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Appendix D. China Energy Label . .

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Appendix E. ENERGY STAR model
information . . . . . . . . . . . . .

151

Appendix F. Notices . . . . . . . . .

153

Trademarks . . . . . . . . . . . . . . . .

154

149

iii

ThinkCentre M800 and M900 Hardware Maintenance Manual

About this manual
This manual provides service and reference information for Lenovo® computers listed on the front cover.
Use this manual along with the advanced diagnostic tests to troubleshoot problems.
Important: This manual is intended only for trained service technicians who are familiar with Lenovo
computers. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively.
Before servicing a Lenovo computer, be sure to read and understand Chapter 1 “Read this first: Important
safety information” on page 1.

ThinkCentre M800 and M900 Hardware Maintenance Manual

Chapter 1. Read this first: Important safety information
This chapter contains the safety information that you must be familiar with.

Power cords and power adapters
Use only the power cords and power adapters supplied by the product manufacturer. Do not use the ac
power cord for other devices.
The power cords shall be safety approved. For Germany, it shall be H05VV-F, 3G, 0.75 mm2, or better. For
other countries, the suitable types shall be used accordingly.
Never wrap a power cord around a power adapter or other object. Doing so can stress the cord in ways that
can cause the cord to fray, crack, or crimp. This can present a safety hazard.
Always route power cords so that they will not be walked on, tripped over, or pinched by objects.
Protect power cord and power adapters from liquids. For instance, do not leave your power cord or power
adapter near sinks, tubs, toilets, or on floors that are cleaned with liquid cleansers. Liquids can cause a
short circuit, particularly if the power cord or power adapter has been stressed by misuse. Liquids also can
cause gradual corrosion of power cord terminals and/or the connector terminals on a power adapter,
which can eventually result in overheating.
Ensure that all power cord connectors are securely and completely plugged into receptacles.
Do not use any power adapter that shows corrosion at the ac input pins or shows signs of overheating (such
as deformed plastic) at the ac input or anywhere on the power adapter.
Do not use any power cords where the electrical contacts on either end show signs of corrosion or
overheating or where the power cord appears to have been damaged in any way.

General safety
Follow these rules to ensure general safety:
• Observe good housekeeping in the area of the machines during and after maintenance.
• When lifting any heavy object:
1. Ensure you can stand safely without slipping.
2. Distribute the weight of the object equally between your feet.
3. Use a slow lifting force. Never move suddenly or twist when you attempt to lift.
4. Lift by standing or by pushing up with your leg muscles; this action removes the strain from the
muscles in your back.
Attention:
Do not attempt to lift any objects that weigh more than 16 kg (35 lb) or objects that you think are
too heavy for you.
• Do not perform any action that causes hazards to the customer, or that makes the equipment unsafe.
• Before you start the machine, ensure that other service representatives and the customer's personnel are
not in a hazardous position.
© Copyright Lenovo 2015

• Place removed covers and other parts in a safe place, away from all personnel, while you are servicing
the machine.
• Keep your tool case away from walk areas so that other people will not trip over it.
• Do not wear loose clothing that can be trapped in the moving parts of a machine. Ensure that your sleeves
are fastened or rolled up above your elbows. If your hair is long, fasten it.
• Insert the ends of your necktie or scarf inside clothing or fasten it with a nonconductive clip, approximately
8 centimeters (3 inches) from the end.
• Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for your clothing.
Remember: Metal objects are good electrical conductors.
• Wear safety glasses when you are: hammering, drilling, soldering, cutting wire, attaching springs, using
solvents, or working in any other conditions that might be hazardous to your eyes.
• After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device
that is worn or defective.
• Reinstall all covers correctly before returning the machine to the customer.
CAUTION:

Hazardous moving parts. Keep fingers and other body parts away.
CAUTION:
Before you open the computer cover, turn off the computer and wait several minutes until the
computer is cool.

Electrical safety

CAUTION:
Electrical current from power, telephone, and communication cables can be hazardous. To avoid
personal injury or equipment damage, disconnect the attached power cords, telecommunication
systems, networks, and modems before you open the computer covers, unless instructed otherwise
in the installation and configuration procedures.
Observe the following rules when working on electrical equipment.
Important: Use only approved tools and test equipment. Some hand tools have handles covered with a soft
material that does not insulate you when working with live electrical currents. Many customers have, near
their equipment, rubber floor mats that contain small conductive fibers to decrease electrostatic discharges.
Do not use this type of mat to protect yourself from electrical shock.

ThinkCentre M800 and M900 Hardware Maintenance Manual

• Find the room emergency power-off (EPO) switch, disconnecting switch, or electrical outlet. If an electrical
accident occurs, you can then operate the switch or unplug the power cord quickly.
• Do not work alone under hazardous conditions or near equipment that has hazardous voltages.
• Disconnect all power before:
– Performing a mechanical inspection
– Working near power supplies
– Removing or installing Field Replaceable Units (FRUs)
• Before you start to work on the machine, unplug the power cord. If you cannot unplug it, power off the
wall box that supplies power to the machine and lock the wall box in the off position.
• If you need to work on a machine that has exposed electrical circuits, observe the following precautions:
– Ensure that another person, familiar with the power-off controls, is near you.
Remember: Another person must be there to switch off the power, if necessary.
– Use only one hand when working with powered-on electrical equipment; keep the other hand in your
pocket or behind your back.
Remember: There must be a complete circuit to cause electrical shock. By observing the above rule,
you may prevent a current from passing through your body.
– When using a tester, set the controls correctly and use the approved probe leads and accessories for
that tester.
– Stand on suitable rubber mats (obtained locally, if necessary) to insulate you from grounds such as
metal floor strips and machine frames.
Observe the special safety precautions when you work with very high voltages; these instructions are in
the safety sections of maintenance information. Use extreme care when measuring high voltages.
• Regularly inspect and maintain your electrical hand tools for safe operational condition.
• Do not use worn or broken tools and testers.
• Never assume that power has been disconnected from a circuit. First, check that it has been powered-off.
• Always look carefully for possible hazards in your work area. Examples of these hazards are moist floors,
nongrounded power extension cables, power surges, and missing safety grounds.
• Do not touch live electrical circuits with the reflective surface of a plastic dental mirror. The surface is
conductive; such touching can cause personal injury and machine damage.
• Do not service the following parts with the power on when they are removed from their normal operating
places in a machine:
– Power supply units
– Pumps
– Blowers and fans
– Motor generators
and similar units. (This practice ensures correct grounding of the units.)
• If an electrical accident occurs:
– Use caution; do not become a victim yourself.
– Switch off power.
– Send another person to get medical aid.

Chapter 1. Read this first: Important safety information

Safety inspection guide
The intent of this inspection guide is to assist you in identifying potentially unsafe conditions on these
products. Each machine, as it was designed and built, had required safety items installed to protect users
and service personnel from injury. This guide addresses only those items. However, good judgment should
be used to identify potential safety hazards due to attachment of features or options not covered by this
inspection guide.
If any unsafe conditions are present, you must determine how serious the apparent hazard could be and
whether you can continue without first correcting the problem.
Consider these conditions and the safety hazards they present:
• Electrical hazards, especially primary power (primary voltage on the frame can cause serious or fatal
electrical shock).
• Explosive hazards, such as a damaged CRT face or bulging capacitor
• Mechanical hazards, such as loose or missing hardware
The guide consists of a series of steps presented in a checklist. Begin the checks with the power off, and
the power cord disconnected.
Checklist:
1. Check exterior covers for damage (loose, broken, or sharp edges).
2. Power-off the computer. Disconnect the power cord.
3. Check the power cord for:
a. A third-wire ground connector in good condition. Use a meter to measure third-wire ground
continuity for 0.1 ohm or less between the external ground pin and frame ground.
b. The power cord should be the appropriate type as specified in the parts listings.
c. Insulation must not be frayed or worn.
4. Remove the cover.
5. Check for any obvious alterations. Use good judgment as to the safety of any alterations.
6. Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or
other liquids, or signs of fire or smoke damage.
7. Check for worn, frayed, or pinched cables.
8. Check that the power-supply cover fasteners (screws or rivets) have not been removed or tampered with.

Handling electrostatic discharge-sensitive devices
Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive to
electrostatic discharge (ESD). ESD damage can occur when there is a difference in charge between objects.
To protect against ESD damage, equalize the charge between objects. Then, the machine, the part, the
work mat, and the person handling the part are all at the same charge.
Notes:
1. Use product-specific ESD procedures when they exceed the requirements noted here.
2. Make sure that the ESD protective devices you use have been certified (ISO 9000) as fully effective.
When handling ESD-sensitive parts:
• Keep the parts in protective packages until they are inserted into the product.
• Avoid contact with other people while handling the part.
4

ThinkCentre M800 and M900 Hardware Maintenance Manual

• Wear a grounded wrist strap against your skin to eliminate static on your body.
• Prevent the part from touching your clothing. Most clothing is insulative and retains a charge even
when you are wearing a wrist strap.
• Use the black side of a grounded work mat to provide a static-free work surface. The mat is especially
useful when handling ESD-sensitive devices.
• Select a grounding system, such as those listed below, to provide protection that meets the specific
service requirement.
Note: The use of a grounding system is desirable but not required to protect against ESD damage.
– Attach the ESD ground clip to any frame ground, ground braid, or green-wire ground.
– Use an ESD common ground or reference point when working on a double-insulated or
battery-operated system. You can use coax or connector-outside shells on these systems.
– Use the round ground-prong of the ac plug on ac-operated computers.

Grounding requirements
Electrical grounding of the computer is required for operator safety and correct system function. Proper
grounding of the electrical outlet can be verified by a certified electrician.

Safety notices (multi-lingual translations)
The caution and danger safety notices in this section are provided in the following languages:
• English
• Arabic
• Brazilian/Portuguese
• Chinese (simplified)
• Chinese (traditional)
• French
• German
• Hebrew
• Italian
• Korean
• Spanish

DANGER
Electrical current from power, telephone and communication cables is hazardous.
To avoid a shock hazard:
• Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration
of this product during an electrical storm.
• Connect all power cords to a properly wired and grounded electrical outlet.
Chapter 1. Read this first: Important safety information

• Connect to properly wired outlets any equipment that will be attached to this product.
• When possible, use one hand only to connect or disconnect signal cables.
• Never turn on any equipment when there is evidence of fire, water, or structural damage.
• Disconnect the attached power cords, telecommunications systems, networks, and modems
before you open the device covers, unless instructed otherwise in the installation and configuration
procedures.
• Connect and disconnect cables as described in the following tables when installing, moving, or
opening covers on this product or attached devices.
To Connect

To Disconnect

1. Turn everything OFF.

2. First, attach all cables to devices.

2. First, remove power cords from outlet.

3. Attach signal cables to connectors.

3. Remove signal cables from connectors.

4. Attach power cords to outlet.

4. Remove all cables from devices.

5. Turn device ON.

CAUTION:
When replacing the lithium battery, use only Part Number 45C1566 or an equivalent type battery
recommended by the manufacturer. If your system has a module containing a lithium battery, replace
it only with the same module type made by the same manufacturer. The battery contains lithium and
can explode if not properly used, handled, or disposed of. Do not:
• Throw or immerse into water
• Heat to more than 100°C (212°F)
• Repair or disassemble
Dispose of the battery as required by local ordinances or regulations.

CAUTION:
When laser products (such as CD-ROMs, DVD-ROM drives, fiber optic devices, or transmitters) are
installed, note the following:
• Do not remove the covers. Removing the covers of the laser product could result in exposure to
hazardous laser radiation. There are no serviceable parts inside the device.
• Use of controls or adjustments or performance of procedures other than those specified herein
might result in hazardous radiation exposure.
DANGER
Some laser products contain an embedded Class 3A or Class 3B laser diode. Note the following:
Laser radiation when open. Do not stare into the beam, do not view directly with optical
instruments, and avoid direct exposure to the beam.

ThinkCentre M800 and M900 Hardware Maintenance Manual

≥18 kg (37 lb)

≥32 kg (70.5 lb)

≥55 kg (121.2 lb)

CAUTION:
Use safe practices when lifting.

CAUTION:
The power control button on the device and the power switch on the power supply do not turn off
the electrical current supplied to the device. The device also might have more than one power
cord. To remove all electrical current from the device, ensure that all power cords are disconnected
from the power source.

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Chapter 1. Read this first: Important safety information

ThinkCentre M800 and M900 Hardware Maintenance Manual

≥18 kg (37 lb)

≥32 kg (70.5 lb)

≥55 kg (121.2 lb)

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PERIGO
A corrente elétrica proveniente de cabos de alimentação, de telefone e de comunicações é perigosa.
Chapter 1. Read this first: Important safety information

Para evitar risco de choque elétrico:
• Não conecte nem desconecte nenhum cabo ou execute instalação, manutenção ou reconfiguração
deste produto durante uma tempestade com raios.
• Conecte todos os cabos de alimentação a tomadas elétricas corretamente instaladas e aterradas.
• Todo equipamento que for conectado a este produto deve ser conectado a tomadas corretamente
instaladas.
• Quando possível, utilize apenas uma das mãos para conectar ou desconectar cabos de sinal.
• Nunca ligue nenhum equipamento quando houver evidência de fogo, água ou danos estruturais.
• Antes de abrir tampas de dispositivos, desconecte cabos de alimentação, sistemas de telecomunicação,
redes e modems conectados, a menos que especificado de maneira diferente nos procedimentos de
instalação e configuração.
• Conecte e desconecte os cabos conforme descrito na tabela apresentada a seguir ao instalar, mover ou
abrir tampas deste produto ou de dispositivos conectados.
Para Conectar:

Para Desconectar:

1. DESLIGUE Tudo.

2. Primeiramente, conecte todos os cabos aos
dispositivos.

2. Primeiramente, remova os cabos de alimentação das
tomadas.

3. Conecte os cabos de sinal aos conectores.

3. Remova os cabos de sinal dos conectores.

4. Conecte os cabos de alimentação às tomadas.

4. Remova todos os cabos dos dispositivos.

5. LIGUE os dispositivos.

CUIDADO:
Ao substituir a bateria de lítio, utilize apenas uma bateria com Número de Peça 45C1566 ou um tipo
de bateria equivalente recomendado pelo Se o seu sistema possui um módulo com uma bateria de
lítio, substitua-o apenas por um módulo do mesmo tipo e do mesmo fabricante. A bateria contém lítio
e pode explodir se não for utilizada, manuseada ou descartada de maneira correta.
Não:
• Jogue ou coloque na água
• Aqueça a mais de 100°C (212°F)
• Conserte nem desmonte
Descarte a bateria conforme requerido pelas leis ou regulamentos locais.

PRECAUCIÓN:
Quando produtos a laser (como unidades de CD-ROMs, unidades de DVD-ROM, dispositivos de fibra ótica
ou transmissores) estiverem instalados, observe o seguinte:
• Não remova as tampas. A remoção das tampas de um produto a laser pode resultar em exposição
prejudicial à radiação de laser. Não existem peças que podem ser consertadas no interior do dispositivo.

ThinkCentre M800 and M900 Hardware Maintenance Manual

• A utilização de controles ou ajustes ou a execução de procedimentos diferentes dos especificados aqui
pode resultar em exposição prejudicial à radiação.
PERIGO
Alguns produtos a laser contêm diodo de laser integrado da Classe 3A ou da Classe 3B. Observe o seguinte:
Radiação a laser quando aberto. Não olhe diretamente para o feixe a olho nu ou com instrumentos ópticos e
evite exposição direta ao feixe.

≥18 kg (37 lb)

≥32 kg (70.5 lb)

≥55 kg (121.2 lb)

CUIDADO:
Utilize procedimentos de segurança para levantar equipamentos.

CUIDADO:
O botão de controle de alimentação do dispositivo e o botão para ligar/desligar da fonte de alimentação
não desligam a corrente elétrica fornecida ao dispositivo. O dispositivo também pode ter mais de um cabo
de alimentação. Para remover toda a corrente elétrica do dispositivo, assegure que todos os cabos de
alimentação estejam desconectados da fonte de alimentação.

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DANGER
Le courant électrique provenant de l'alimentation, du téléphone et des câbles de transmission peut présenter
un danger.
Pour éviter tout risque de choc électrique :
• Ne manipulez aucun câble et n'effectuez aucune opération d'installation, d'entretien ou de reconfiguration
de ce produit au cours d'un orage.
• Branchez tous les cordons d'alimentation sur un socle de prise de courant correctement câblé et mis à la
terre.
• Branchez sur des socles de prise de courant correctement câblés tout équipement connecté à ce produit.
• Lorsque cela est possible, n'utilisez qu'une seule main pour connecter ou déconnecter les câbles
d'interface.
• Ne mettez jamais un équipement sous tension en cas d'incendie ou d'inondation, ou en présence de
dommages matériels.
• Avant de retirer les carters de l'unité, mettez celle-ci hors tension et déconnectez ses cordons
d'alimentation, ainsi que les câbles qui la relient aux réseaux, aux systèmes de télécommunication et aux
modems (sauf instruction contraire mentionnée dans les procédures d'installation et de configuration).
• Lorsque vous installez, que vous déplacez, ou que vous manipulez le présent produit ou des périphériques
qui lui sont raccordés, reportez-vous aux instructions ci-dessous pour connecter et déconnecter les
différents cordons.
Connexion

Déconnexion

1. Mettez les unités HORS TENSION.

2. Commencez par brancher tous les cordons sur les
unités.

2. Débranchez les cordons d'alimentation des prises.

3. Branchez les câbles d'interface sur des connecteurs.

4. Débranchez tous les câbles des unités.

3. Débranchez les câbles d'interface des connecteurs.

4. Branchez les cordons d'alimentation sur des prises.
5. Mettez les unités SOUS TENSION.

ATTENTION:
Remplacer la pile au lithium usagée par une pile de référence identique exclusivement, (référence
45C1566), ou suivre les instructions du fabricant qui en définit les équivalences. Si votre système est
doté d'un module contenant une pile au lithium, vous devez le remplacer uniquement par un module
identique, produit par le même fabricant. La pile contient du lithium et peut exploser en cas de
mauvaise utilisation, de mauvaise manipulation ou de mise au rebut inappropriée.
Ne pas :
• la jeter à l'eau,
• l'exposer à des températures supérieures à 100°C,
• chercher à la réparer ou à la démonter.
Ne pas mettre la pile à la poubelle. Pour la mise au rebut, se reporter à la réglementation en vigueur.

Chapter 1. Read this first: Important safety information

ATTENTION:
Si des produits à laser (tels que des unités de CD-ROM, de DVD-ROM, des unités à fibres optiques, ou
des émetteurs) sont installés, prenez connaissance des informations suivantes :
• Ne retirez pas le carter. En ouvrant l'unité de CD-ROM ou de DVD-ROM, vous vous exposez au
rayonnement dangereux du laser. Aucune pièce de l'unité n'est réparable.
• Pour éviter tout risque d'exposition au rayon laser, respectez les consignes de réglage et
d'utilisation des commandes, ainsi que les procédures décrites dans le présent manuel.

DANGER
Certains produits à laser contiennent une diode à laser intégrée de classe 3A ou 3B. Prenez
connaissance des informations suivantes:
Rayonnement laser lorsque le carter est ouvert. Evitez toute expositiondirecte au rayon laser. Evitez
de regarder fixement le faisceau ou del'observer à l'aide d'instruments optiques.

≥18 kg (37 lb)

≥32 kg (70.5 lb)

≥55 kg (121.2 lb)

ATTENTION:
Soulevez la machine avec précaution.

ATTENTION:
L'interrupteur de contrôle d'alimentation de l'unité et l'interrupteur dubloc d'alimentation ne coupent
pas le courant électrique alimentantl'unité. En outre, le système peut être équipé de plusieurs
cordonsd'alimentation. Pour mettre l'unité hors tension, vous devez déconnectertous les cordons
de la source d'alimentation.

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VORSICHT
An Netz-, Telefon- und Datenleitungen können gefährliche Spannungen anliegen.
Aus Sicherheitsgründen:
• Bei Gewitter an diesem Gerät keine Kabel anschließen oder lösen. Ferner keine Installations-,
Wartungs- oder Rekonfigurationsarbeiten durchführen.
• Gerät nur an eine Schutzkontaktsteckdose mit ordnungsgemäß geerdetem Schutzkontakt
anschließen.
• Alle angeschlossenen Geräte ebenfalls an Schutzkontaktsteckdosen mit ordnungsgemäß
geerdetem Schutzkontakt anschließen.
• Die Signalkabel nach Möglichkeit einhändig anschließen oder lösen, um einen Stromschlag durch
Berühren von Oberflächen mit unterschiedlichem elektrischem Potenzial zu vermeiden.
• Geräte niemals einschalten, wenn Hinweise auf Feuer, Wasser oder Gebäudeschäden vorliegen.
• Die Verbindung zu den angeschlossenen Netzkabeln, Telekommunikationssystemen, Netzwerken
und Modems ist vor dem Öffnen des Gehäuses zu unterbrechen, sofern in den Installations- und
Konfigurationsprozeduren keine anders lautenden Anweisungen enthalten sind.
• Zum Installieren, Transportieren und Öffnen der Abdeckungen des Computers oder der
angeschlossenen Einheiten die Kabel gemäß der folgenden Tabelle anschließen und abziehen.
Zum Anschließen der Kabel gehen Sie wie folgt vor

Zum Abziehen der Kabel gehen Sie wie folgt vor

1. Schalten Sie alle Einheiten AUS.

2. Schließen Sie erst alle Kabel an die Einheiten an.
3. Schließen Sie die Signalkabel an die Buchsen an.

2. Ziehen Sie zuerst alle Netzkabel aus den
Netzsteckdosen.

4. Schließen Sie die Netzkabel an die Steckdose an.

3. Ziehen Sie die Signalkabel aus den Buchsen.

5. Schalten Sie die Einheit EIN.

4. Ziehen Sie alle Kabel von den Einheiten ab.

CAUTION:
Eine verbrauchte Lithiumbatterie nur durch eine Batterie mit der Teilenummer 45C1566 oder eine
gleichwertige, vom Hersteller empfohlene Batterie ersetzen. Enthält das System ein Modul mit einer
Lithiumbatterie, dieses nur durch ein Modul desselben Typs und von demselben Hersteller ersetzen.
Die Batterie enthält Lithium und kann bei unsachgemäßer Verwendung, Handhabung oder Entsorgung
explodieren.
Die Batterie nicht:
• mit Wasser in Berührung bringen.

Chapter 1. Read this first: Important safety information

• über 100 C erhitzen.
• reparieren oder zerlegen.
Die örtlichen Bestimmungen für die Entsorgung von Sondermüll beachten.

ACHTUNG:
Bei der Installation von Lasergeräten (wie CD-ROM-Laufwerken, DVD- aufwerken, Einheiten mit
Lichtwellenleitertechnik oder Sendern) Folgendes beachten:
• Die Abdeckungen nicht entfernen. Durch Entfernen der Abdeckungen des Lasergeräts können
gefährliche Laserstrahlungen freigesetzt werden. Das Gerät enthält keine zu wartenden Teile.
• Werden Steuerelemente, Einstellungen oder Durchführungen von Prozeduren anders als hier
angegeben verwendet, kann gefährliche Laserstrahlung auftreten.

VORSICHT
Einige Lasergeräte enthalten eine Laserdiode der Klasse 3A oder 3B. Beachten Sie Folgendes:
Laserstrahlung bei geöffneter Verkleidung. Nicht in den Strahl blicken. Keine Lupen oder Spiegel
verwenden. Strahlungsbereich meiden.

≥18 kg

≥32 kg

≥55 kg

ACHTUNG:
Arbeitsschutzrichtlinien beim Anheben der Maschine beachten.

ACHTUNG:
Mit dem Netzschalter an der Einheit und am Netzteil wird die Stromversorgung für die Einheit
nicht unterbrochen. Die Einheit kann auch mit mehreren Netzkabeln ausgestattet sein. Um die
Stromversorgung für die Einheit vollständig zu unterbrechen, müssen alle zum Gerät führenden
Netzkabel vom Netz getrennt werden.

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ThinkCentre M800 and M900 Hardware Maintenance Manual

PERICOLO
La corrente elettrica proveniente dai cavi di alimentazione, del telefono e di comunicazione può essere
pericolosa.
Per evitare il rischio di scosse elettriche:
• Non collegare o scollegare qualsiasi cavo oppure effettuare l'installazione, la manutenzione o la
riconfigurazione del prodotto durante un temporale.
• Collegare tutti i fili elettrici a una presa di alimentazione correttamente cablata e dotata di messa a
terra.
• Collegare alle prese elettriche appropriate tutte le apparecchiature che verranno utilizzate per
questo prodotto.
• Se possibile, utilizzare solo una mano per collegare o scollegare i cavi di segnale.
• Non accendere assolutamente apparecchiature in presenza di incendi, perdite d'acqua o danno
strutturale.
• Scollegare i cavi di alimentazione, i sistemi di telecomunicazione, le reti e il modem prima di
aprire i coperchi del dispositivo, salvo istruzioni contrarie relative alle procedure di installazione e
configurazione.
• Collegare e scollegare i cavi come descritto nella seguente tabella quando vengono effettuate
operazioni di installazione, spostamento o apertura dei coperchi di questo prodotto o delle unità
collegate.
Per collegarsi

Per scollegarsi

1. SPEGNERE le apparecchiature.

2. Innanzitutto, collegare tutti i cavi alle unità.
3. Collegare i cavi di segnale ai connettori.

2. Innanzitutto, rimuovere i cavi di alimentazione dalla
presa.

4. Collegare i cavi di alimentazione alla presa.

3. Rimuovere i cavi di segnale dai connettori.

5. Accendere l'unità.

4. Rimuovere tutti i cavi dalle unità.

ATTENZIONE:
Quando si sostituisce la batteria al litio, utilizzare solo il Numero parte 45C1566 o un tipo di batteria
equivalente consigliato dal produttore. Se sul sistema è presente un modulo che contiene una batteria
al litio, sostituirlo solo con un tipo di modulo dello stesso tipo della stessa casa di produzione. La
batteria contiene litio e può esplodere se usata, maneggiata o smaltita in modo non corretto.
Non:
• Gettare o immergere la batteria nell'acqua
• Riscaldarla ad una temperatura superiore ai 100 gradi C (212 gradi F)
• Smontarla, ricaricarla o tentare di ripararla
Le batterie usate vanno smaltite in accordo alla normativa in vigore (DPR 915/82 e successive
disposizioni e disposizioni locali).
Chapter 1. Read this first: Important safety information

ATTENZIONE:
Quando vengono installati prodotti laser (quali CD-ROM, unità DVD-ROM, unità a fibre ottiche o
trasmittenti), tener presente quanto segue:
• Non rimuovere gli sportelli. L'apertura di un'unità laser può determinare l'esposizione a radiazioni
laser pericolose. All'interno dell'unità non vi sono parti su cui effettuare l'assistenza tecnica.
• L'utilizzo di controlli, regolazioni o l'esecuzione di procedure non descritti nel presente manuale
possono provocare l'esposizione a radiazioni pericolose.

PERICOLO
Alcune unità laser contengono un diodo laser di Classe 3A o Classe 3B. Tener presente quanto segue:
Aprendo l'unità vengono emesse radiazioni laser. Non fissare il fascio, non guardarlo direttamente
con strumenti ottici ed evitare l'esposizione al fascio.

≥18 kg

≥32 kg

≥55 kg

ATTENZIONE:
Prestare attenzione nel sollevare l'apparecchiatura.

ATTENZIONE:
Il pulsante di controllo dell'alimentazione presente sull'unità e l'interruttore dell'alimentatore non
disattivano l'alimentazione corrente fornita all'unità. E' possibile che l'unità disponga di più cavi di
alimentazione. Per disattivare l'alimentazione dall'unità, accertarsi che tutti i cavi di alimentazione
siano scollegati dalla fonte di alimentazione.

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PELIGRO
La corriente eléctrica procedente de cables de alimentación, teléfonos y cables de comunicación puede
ser peligrosa.
Para evitar el riesgo de descarga eléctrica:
• No conecte ni desconecte los cables ni realice ninguna tarea de instalación, mantenimiento o
reconfiguración de este producto durante una tormenta eléctrica.
• Conecte todos los cables de alimentación a tomas de corriente debidamente cableadas y
conectadas a tierra.
• Cualquier equipo que se conecte a este producto también debe conectarse a tomas de corriente
debidamente cableadas.
• Siempre que sea posible, utilice una sola mano para conectar o desconectar los cables de señal.
24

ThinkCentre M800 and M900 Hardware Maintenance Manual

• No encienda nunca un equipo cuando hay señales de fuego, agua o daños estructurales.
• Desconecte los cables de alimentación, los sistemas de telecomunicaciones, las redes y los
módems conectados antes de abrir las cubiertas de los dispositivos, a menos que se indique lo
contrario en los procedimientos de instalación y configuración.
• Conecte y desconecte los cables, como se describe en la tabla siguiente, cuando instale, mueva o
abra las cubiertas de este producto o de los dispositivos conectados.
Para conectar

Para desconectar

1. APÁGUELO todo.

2. En primer lugar, conecte todos los cables a los
dispositivos.

2. En primer lugar, desenchufe los cables de alimentación
de las tomas de corriente.

3. Conecte los cables de señal a los conectores.

3. Desconecte los cables de señal de los conectores.

4. Enchufe los cables de alimentación a las tomas de
corriente.

4. Desconecte todos los cables de los dispositivos.

5. Encienda el dispositivo.

PRECAUCIÓN:
Cuando sustituya una batería de litio, utilice solamente una batería número de pieza 45C1566 u otra
de tipo equivalente recomendada por el fabricante. Si su sistema dispone de un módulo que contiene
una batería de litio, reemplácelo sólo con el mismo tipo de módulo, del mismo fabricante. La batería
contiene litio y puede explotar si no se utiliza, manipula o desecha correctamente.
No debe:
• Arrojarla al agua o sumergirla en ella
• Exponerla a temperaturas superiores a 100°C (212°F)
• Repararla o desmontarla
Deshágase de la batería según especifiquen las leyes o normas locales.

PRECAUCIÓN:
Cuando haya productos láser (como unidades de CD-ROM, unidades de DVD, dispositivos de fibra
óptica o transmisores) instalados, tenga en cuenta lo siguiente:
• No quite las cubiertas. Si quita las cubiertas del producto láser, podría quedar expuesto a radiación
láser peligrosa. Dentro del dispositivo no existe ninguna pieza que requiera servicio técnico.
• Si usa controles o ajustes o realiza procedimientos que no sean los especificados aquí, podría
exponerse a radiaciones peligrosas.

PELIGRO

Chapter 1. Read this first: Important safety information

Algunos productos láser tienen incorporado un diodo láser de clase 3A o clase 3B. Tenga en cuenta lo
siguiente:
Cuando se abre, queda expuesto a radiación láser. No mire directamente al rayo láser, ni siquiera con
instrumentos ópticos, y evite exponerse directamente al rayo láser.

≥18 kg

≥32 kg

≥55 kg

PRECAUCIÓN:
Adopte procedimientos seguros al levantar el equipo.

PRECAUCIÓN:
El botón de control de alimentación del dispositivo y el interruptor de alimentación de la fuente de
alimentación no desconectan la corriente eléctrica suministrada al dispositivo. Además, el dispositivo
podría tener más de un cable de alimentación. Para suprimir toda la corriente eléctrica del dispositivo,
asegúrese de que todos los cables de alimentación estén desconectados de la toma de corriente.

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ThinkCentre M800 and M900 Hardware Maintenance Manual

Chapter 2. Product overview
This chapter provides information about the following topics:
•

“Hardware locations” on page 27

•

“Features” on page 35

•

“Specifications” on page 39

•

“Programs” on page 39

Hardware locations
This section provides information about the locations of your computer hardware.
Note: The computer hardware might look slightly different from the illustrations.

Front view

Figure 1. Front view
1 Optical drive activity indicator

2 Optical drive eject/close button

3 Storage drive activity indicator

4 Power button

5 USB 3.0 connector

6 Headphone connector

7 Microphone connector

8 USB 3.0 connector

• Headphone connector
Used to connect headphones to your computer.

• Microphone connector
Used to connect a microphone to your computer. You can use the microphone to record sounds or use
speech-recognition software.
• Optical drive eject/close button
Used to eject the tray of the optical drive from the drive. After you insert a disc into the tray, press
the eject/close button to close the tray.
• Optical drive activity indicator
When the optical drive activity indicator is on, the optical drive is in use.
• Power button
Used to turn on your computer. You also can use the power button to turn off your computer only when
you cannot use any Microsoft® Windows® shutdown procedure to turn off your computer.
• Storage drive activity indicator
When the storage drive activity indicator is on, the storage drives are in use.
• USB 3.0 connector
Used to connect a device that requires a USB 2.0 or USB 3.0 connection, such as a keyboard, a mouse, a
scanner, a printer, or a personal digital assistant (PDA).

Rear view

Figure 2. Rear view
1 Power cord connector

2 Serial connector

3 VGA connector

4 DisplayPort® connectors (2)

5 USB 3.0 connectors (4)

ThinkCentre M800 and M900 Hardware Maintenance Manual

6 USB 2.0 connectors (2) (for M800 models) or USB 3.0
connectors (2) (for M900 models)

7 Microphone connector
9 Audio line-in connector

8 Audio line-out connector
10 PCI/PCI-Express card area (different cards provide
different connectors)

11 Padlock loop

12 Cable lock slots (2)

13 Serial connector (some models)

14 Ethernet connector

15 PS/2 keyboard and mouse connectors (some models)

16 Security-lock slot

Note: A discrete graphics card, network interface card, or audio card might be installed in the Peripheral
Component Interconnect (PCI) or PCI Express card area. If such a card is installed, ensure that you use the
connectors on the card instead of the corresponding connectors on the computer.
• Audio line-in connector
Used to receive audio signals from an external audio device, such as a stereo system. When you attach
an external audio device, a cable is connected between the audio line-out connector of the device
and the audio line-in connector of the computer.
• Audio line-out connector
Used to send audio signals from the computer to external devices, such as powered stereo speakers,
headphones, or multimedia keyboards. To attach a stereo system or other external recording device, a
cable is connected between the audio line-in connector of the device and the audio line-out connector
of the computer.
Note: If your computer has both an audio line-out connector and a headset connector or headphone
connector, always use the headset connector or headphone connector for earphones, headphones, or a
headset. However, a headphone connector does not support the microphone of a headset.
• Cable-lock slots (2)
Used to secure a cable lock. For more information, see “Attaching a cable lock” on page 58.
• DisplayPort connector
Used to connect a high-performance monitor, a direct-drive monitor, or other devices that use a
DisplayPort connector.
• Ethernet connector
Used to connect an Ethernet cable for a local area network (LAN).
Note: To operate the computer within Federal Communications Commission (FCC) Class B limits, use a
Category 5e or better Ethernet cable.
• Microphone connector
Used to connect a microphone to your computer when you want to record sound or if you use
speech-recognition software.
• Padlock loop
Used to secure a padlock. For more information, see “Locking the computer cover” on page 55.
• PCI/PCI-Express card area (different cards provide different connectors)
To improve the operating performance of your computer, you can connect PCI/PCI-Express cards into
this area. Depending on your computer model, the connectors in this area might vary.
• Power cord connector
Used to connect the power cord to your computer for power supply.
• PS/2 keyboard connector
Used to connect a keyboard that uses a Personal System/2 (PS/2) keyboard connector.

Chapter 2. Product overview

• PS/2 mouse connector
Used to connect a mouse, a trackball, or other pointing devices that use a PS/2 mouse connector.
• Serial connector
Used to connect an external modem, a serial printer, or other devices that use a serial connector.
• Security-lock slot
Used to secure a Kensington-style cable lock. For more information, see “Attaching a Kensington-style
cable lock” on page 57.
• USB 2.0 connector
Used to connect a device that requires a USB 2.0 connection, such as a keyboard, a mouse, a scanner, a
printer, or a PDA.
• USB 3.0 connector
Used to connect a device that requires a USB 2.0 or USB 3.0 connection, such as a keyboard, a mouse, a
scanner, a printer, or a PDA.
• VGA connector
Used to connect a video graphics array (VGA) monitor or other devices that use a VGA connector.

Computer components
Note: Depending on your computer model, some of the following components might not be available.

Figure 3. Computer components

ThinkCentre M800 and M900 Hardware Maintenance Manual

1 Computer cover

2 Power supply assembly

3 Heat sink and fan assembly

4 Microprocessor

5 Coin-cell battery

6 Memory module

7 Computer handle

8 Optical drive

9 Optical drive, card reader and USB assembly, or
front-access storage enclosure

10 Front Wi-Fi antenna

11 Front audio and USB assembly

12 Thermal sensor

13 Internal speaker

14 Secondary storage drive bracket

15 Secondary storage drive

16 System board

17 Primary storage drive bracket

18 Primary storage drive

19 PCI adapter card

20 PCI card

21 Wi-Fi card

22 Wi-Fi adapter card

23 Rear Wi-Fi antenna

24 Cover presence switch (also called intrusion switch)

25 PCI Express card

26 Rear fan

27 Front bezel

28 Power cord

Major FRUs and CRUs
Note: Depending on your computer model, some of the following components might not be available.

Chapter 2. Product overview

Figure 4. Major FRUs and CRUs

The following table lists the major FRUs shown in the illustration above and identifies which FRUs are
also self-service CRUs or optional-service CRUs.
Notes:
• Self-service CRUs: These CRUs unplug or are secured by no more than two screws. Examples of
these types of CRUs include the keyboard, the mouse, any USB device, and the power cord. Other
self-service CRUs depending on product design might include memory modules, adapter cards, hard
disk drives, and optical drives.
• Optional-service CRUs: These CRUs are isolated parts within the computer and are concealed by an
access panel that is typically secured by more than two screws. Once the access panel is removed, the
specific CRU is visible.

ThinkCentre M800 and M900 Hardware Maintenance Manual

Number

FRU description

Self-service CRU

Optional-service CRU

Rear fan

System board

Microprocessor

Memory module

Yes

Coin-cell battery

Yes

Heat sink and fan assembly

Yes

Chassis

Power supply unit

Yes

Front-access storage enclosure

Optical drive

Yes

Card reader and USB assembly bracket

Front audio and USB assembly

USB assembly

Card reader

Computer handle

Front bezel

Yes

Front Wi-Fi antenna

Thermal sensor

Internal speaker

Primary storage drive

Yes

Power cord

Yes

Primary storage drive bracket

Yes

Secondary storage drive

Yes

Secondary storage drive bracket

Yes

PCI adapter card

Yes

PCI card

Yes

PCI Express card

Yes

Wi-Fi card

Wi-Fi adapter card

Rear Wi-Fi antenna

Cover presence switch (also called intrusion
switch)

Computer cover

Yes

For detailed FRU information, such as the FRU part numbers and supported computer models, go to:
http:/www.lenovo.com/serviceparts-lookup

Parts on the system board
Note: For the parts that are displayed on the following figure but not introduced in the following table, see
“Front view” on page 27 and “Rear view” on page 28.

Chapter 2. Product overview

Figure 5. Parts on the system board
1 PS/2 keyboard and mouse connector

2 4-pin power connector

3 Microprocessor

4 Microprocessor fan connector

5 Memory slot (DIMM1)

6 Memory slot (DIMM2)

7 Memory slot (DIMM3)

8 Memory slot (DIMM4)

9 Thermal sensor connector

10 10-pin power connector

11 Storage drive fan connector

12 SATA power connectors (2) (for connecting an optical
drive or a storage drive)

13 Front USB 3.0 connector (for connecting the USB 3.0
connectors on the front bezel)

14 eSATA connector

15 Front fan connector

16 SATA 3.0 connectors (3)

17 Front panel connector

18 Front USB connector 2 (for connecting an additional
USB device)

19 Front USB connector 1 (for connecting an additional
USB device)

20 M.2 card slot (for installing a PCI adapter card)

21 Serial connector

22 Internal speaker connector

23 Front audio connector

24 PCI Express card slot (physical link width x16;
negotiable link width x4, x1)

25 PCI Express x1 card slot

26 PCI Express x16 card slot

27 Rear fan connector

28 Cover presence switch connector (intrusion switch
connector)

29 Coin-cell battery

ThinkCentre M800 and M900 Hardware Maintenance Manual

Machine type and model label
The machine type and model label identifies your computer. When you contact Lenovo for help, the machine
type and model information helps support technicians to identify your computer and provide faster service.
The machine type and model label is attached on the side of your computer as shown.

Figure 6. Machine type and model label

Features
The computer features introduced in this section apply to various models.
Information about your computer
• To view basic information (such as microprocessor and memory information) about your computer,
do the following:
1. Click the Start button to open the Start menu.
2. Depending on your Windows version, do one of the following:
– For Windows 7: Right-click Computer, and then click Properties.
– For Windows 10: Click Settings ➙ System ➙ About.
• To view detailed information about the devices (such as the optical drive and network adapters) on your
computer, do the following:
1. Depending on your Windows version, do one of the following:

Chapter 2. Product overview

– For Windows 7: Click the Start button to open the Start menu. Right-click Computer, and then
click Properties.
– For Windows 10: Right-click the Start button to open the Start context menu.
2. Click Device Manager. Type the administrator password or provide confirmation if prompted.
Preinstalled operating system
Your computer is preinstalled with Windows 7 or Windows 10 operating system. Additional operating
systems might be identified by Lenovo as compatible with your computer. To determine if an operating
system has been certified or tested for compatibility, check the Web site of the operating system provider.
Power supply
• 400-watt automatic voltage-sensing power supply
• 250-watt automatic voltage-sensing power supply
Storage drives
Your computer supports up to three storage drives.
To view the amount of storage drive space, do the following:
1. Depending on your Windows version, do one of the following:
• For Windows 7: Click the Start button to open the Start menu. Right-click Computer, and then click
Manage.
• For Windows 10: Right-click the Start button to open the Start context menu.
2. Click Disk Management.
Video features
• The integrated graphics card supports the following display connectors on your computer:
– DisplayPort connector
– VGA connector
• The discrete graphics card, which is available on some models, provides enhanced display capability
and experience.
Audio features
• The integrated audio card supports the following audio connectors and devices on your computer:
– Audio line-in connector
– Audio line-out connector
– Headphone connector
– Internal speaker (available on some models)
– Microphone connector
• The discrete audio card, which is available on some models, provides enhanced audio capability and
experience.
Input/Output (I/O) features
• Audio connectors (audio line-in connector, audio line-out connector, headphone connector, and
microphone connector)
• Card reader slot
• Display connectors (DisplayPort connector and VGA connector)

ThinkCentre M800 and M900 Hardware Maintenance Manual

• Ethernet connector
• PS/2 keyboard connector (available on some models)
• PS/2 mouse connector (available on some models)
• Serial connector
• USB connector
Expansion
• Card reader (available on some models)
• Memory slot
• Optical drive (available on some models)
• PCI Express x1 card slot
• PCI Express card slot (physical link width x16; negotiable link width x4, x1)
• PCI Express x16 graphics card slot
• Storage drive bay
Network features
• Ethernet LAN
– The integrated network interface card supports the Ethernet connector on your computer.
– The discrete network interface card, which is available on some models, provides an additional
Ethernet connector.
• Wireless LAN (available on some models)
• Bluetooth (available on some models)
Security features
For more information, see Chapter 5 “Security” on page 55.
System management features
• Ability to store power-on self-test (POST) hardware test results
• Desktop Management Interface (DMI)
Desktop Management Interface provides a common path for users to access information about all
aspects of a computer. The information includes processor type, installation date, connected printers and
other peripherals, power sources, maintenance history, and so on.
• ErP LPS compliance mode
The energy-related products directive (ErP) lowest power state (LPS) compliance mode reduces the
consumption of electricity when your computer is in sleep or off mode. For more information, see
“Enabling or disabling ErP LPS compliance mode” on page 62.
• Intelligent Cooling Engine (ICE)
The Intelligent Cooling Engine is a system thermal management solution that enables your computer
to run with better thermal and acoustic performance. The ICE function also monitors the thermal
performance of your computer to identify thermal problems. For more information, see “Changing ICE
Performance Mode” on page 62 and “Enabling or disabling the ICE Thermal Alert feature” on page 63.
• Intel® Standard Manageability
Intel Standard Manageability is hardware- and firmware-based technology that makes computers easier
and less expensive for businesses to monitor, maintain, update, upgrade, and repair.

Chapter 2. Product overview

• Intel Active Management Technology (AMT) (available on some models)
Intel Active Management Technology is hardware- and firmware-based technology that makes computers
easier and less expensive for businesses to monitor, maintain, update, upgrade, and repair.
• Intel Matrix Storage Manager
Intel Matrix Storage Manager is a device driver that provides support for Serial Advanced Technology
Attachment (SATA) Redundant Array of Independent Disks (RAID) 5 arrays and SATA RAID 10 arrays on
specific Intel chipset system boards to enhance hard disk performance.
• Preboot Execution Environment (PXE)
Preboot Execution Environment enables computers to start through a network interface independent of
data storage drives (such as hard disk drives) or installed operating systems.
• System Management (SM) Basic Input/Output System (BIOS) and SM software
The SMBIOS specification defines data structures and access methods that can be used to read
management data stored in the BIOS of a computer.
• Wake on LAN
Wake on LAN is an Ethernet computer networking standard that allows a computer to be turned on
or woken up by a network message. The message usually is sent by a program running on another
computer on the same LAN.
• Wake on Ring
Wake on Ring, sometimes referred to as Wake on Modem, is a specification that allows supported
computers and devices to resume from sleep or hibernation mode.
• Windows Management Instrumentation (WMI)
Windows Management Instrumentation is a set of extensions to the Windows Driver Model. It provides an
operating system interface through which instrumented components provide information and notification.

ThinkCentre M800 and M900 Hardware Maintenance Manual

Specifications
This section lists the physical specifications for your computer.
Dimensions
Width: 175 mm (6.9 inches)
Height: 408 mm (16.1 inches)
Depth: 413 mm (16.3 inches)
Weight
Maximum configuration as shipped: 12.5 kg (27.6 lb)
Environment
• Air temperature:
Operating: From 10°C (50°F) to 35°C (95°F)
Storage in original shipping package: From -40°C (-40°F) to 60°C (140°F)
Storage without package: From -10°C (14°F) to 60°C (140°F)
• Humidity:
Operating: 20%–80% (non-condensing)
Storage: 20%–90% (non-condensing)
• Altitude:
Operating: From -15.2 m (-50 ft) to 3048 m (10 000 ft)
Storage: From -15.2 m (-50 ft) to 10 668 m (35 000 ft)
Electrical input
Input voltage: From 100 V ac to 240 V ac
Input frequency: 50/60 Hz

Programs
This section provides information about the programs on your computer.

Accessing a program on your computer
Note: For Windows 7, depending on your computer model, some of the Lenovo programs might be ready to
be installed, so you need to install them manually. Then, you can access and use these programs.
To access a program on your computer, do one of the following:
• From Windows Search:
1. Depending on your Windows version, do one of the following:
– For Windows 7: Click the Start button to open the Start menu, and then type the program name
into the search box.
– For Windows 10: Type the program name into the search box next to the Start button.
2. In the search results, click the name of the desired program to launch the program.
• From the Start menu or Control Panel:
1. Click the Start button to open the Start menu. Then, click the name of the desired program to
launch the program.

Chapter 2. Product overview

2. If the program name is not displayed, click All Programs for Windows 7 or All apps for Windows
10 to display the program list. From the list or a folder in the list, click the name of the desired
program to launch the program.
3. If the program name is not displayed on the Start menu, access the program from Control Panel.
a. Depending on your Windows version, do one of the following:
– For Windows 7: Click Control Panel on the Start menu.
– For Windows 10: Right-click the Start button to open the Start context menu, and then click
Control Panel.
b. View Control Panel using Large icons or Small icons, and then click the name of the desired
program to launch the program.

Installing a program that is ready to be installed
To install a program that is ready to be installed, do the following:
1. Open the Lenovo ThinkVantage® Tools program. See “Accessing a program on your computer” on
page 39.
2. View the program icons using Tiles.
3. Follow the instructions under greyed-out icons to locate the icon for the desired program. Then,
double-click the icon to install the program.

An introduction to Lenovo programs
This section provides information about the major Lenovo programs available on your operating system.
Note: Depending on your computer model, some of the following programs might not be available.
• For Windows 7 only:
– Create Recovery Media
The Create Recovery Media program enables you to restore only the C drive or the entire storage
drive to the factory-default settings.
– Fingerprint Manager Pro or ThinkVantage Fingerprint Software
The Fingerprint Manager Pro or ThinkVantage Fingerprint Software program enables you to use a
fingerprint reader. The integrated fingerprint reader provided on some keyboards enables you to enroll
your fingerprint and associate it with your power-on password, hard disk password, and Windows
password. As a result, fingerprint authentication can replace passwords and enable simple and secure
user access.
– Lenovo PowerENGAGE
The Lenovo PowerENGAGE program enables you to register your computer with Lenovo.
– Password Manager
The Password Manager program automatically captures and fills in authentication information for
Windows programs and Web sites.
– Rescue and Recovery®
The Rescue and Recovery program is a one-button recovery and restore solution. It includes a set
of self-recovery tools to help you diagnose computer problems, get help, and recover from system
crashes, even if you cannot start the Windows operating system.

ThinkCentre M800 and M900 Hardware Maintenance Manual

– System Update
The System Update program provides regular access to the system updates for your computer, such
as device driver updates, software updates, and BIOS updates. The program gathers information from
the Lenovo Help Center about new updates for your computer, then sorts and displays the updates for
download and installation. You have complete control of which updates to download and install.
• For Windows 10 only:
– Lenovo Companion
Your computer’s best features and capabilities should be easy to access and understand. With Lenovo
Companion, they are. Use Lenovo Companion to do the following:
– Optimize your computer’s performance, monitor your computer’s health, and manage updates.
– Access your user guide, check warranty status, and view accessories customized for your computer.
– Read how-to articles, explore Lenovo forums, and stay up-to-date on technology news with articles
and blogs from trusted sources.
Lenovo Companion is filled with exclusive Lenovo content to help you learn more about what you
can do with your computer.
– Lenovo ID
The Lenovo ID program enables you to create your Lenovo ID and access all supported Lenovo
programs and web portals with single sign-on.
• For Windows 7 and Windows 10:
– Lenovo Bluetooth Lock
The Lenovo Bluetooth Lock program enables you to use a Bluetooth device (such as your smartphone)
as a proximity-based unit for locking or unlocking your computer automatically. By detecting the
distance between your computer and the predefined Bluetooth device that you are carrying, the Lenovo
Bluetooth Lock program automatically locks your computer when you walk away and unlocks your
computer when you come back. This is a simple way to protect your computer against unauthorized
access in case that you forget to lock your computer.
– Lenovo Device Experience or Lenovo PC Experience
The Lenovo Device Experience or Lenovo PC Experience program helps you work more easily and
securely. The program provides easy access to Lenovo ThinkVantage Tools or Lenovo Tools, important
settings and information about your computer, the Lenovo Support Web site, and so on.
– Lenovo Solution Center
The Lenovo Solution Center program enables you to troubleshoot and resolve computer problems. It
combines diagnostic tests, system information collection, security status, and support information,
along with hints and tips for maximum system performance.
– Power Manager
The Power Manager program provides convenient, flexible, and complete power management for
your computer. It enables you to adjust your computer power settings to achieve the best balance
between performance and power saving.

Chapter 2. Product overview

ThinkCentre M800 and M900 Hardware Maintenance Manual

Chapter 3. Using your computer
This chapter contains the following topics:
•

“Registering your computer” on page 43

•

“Setting the computer volume” on page 43

•

“Adding an icon to the Windows notification area” on page 43

•

“Using a disc” on page 43

•

“Connecting to a network” on page 45

Registering your computer
When you register your computer with Lenovo, you enter required information into a Lenovo database. The
information enables Lenovo to contact you when there is a recall or other severe problem and provide
quicker service when you call Lenovo for help. In addition, some locations offer extended privileges and
services to registered users.
To register your computer with Lenovo, ensure that your computer is connected to the Internet. Then, go to
http://www.lenovo.com/register and follow the instructions on the screen.

Setting the computer volume
To set the computer volume, do the following:
1. Click the volume icon in the Windows notification area on the taskbar.
Note: If the volume icon is not displayed in the Windows notification area, add the icon to the
notification area. See “Adding an icon to the Windows notification area” on page 43.
2. Follow the instructions on the screen to adjust the volume. Click the speaker icon to mute the audio.

Adding an icon to the Windows notification area
To add an icon to the Windows notification area, do the following:
1. Click the arrow next to the notification area to view hidden icons. Then, click the desired icon and
drag it to the notification area.
2. If the icon is not displayed, turn on the icon.
a. Click the Start button to open the Start menu.
b. Depending on your Windows version, do one of the following:
• For Windows 7: Click Control Panel. View Control Panel using Large icons or Small icons, and
then click Notification Area Icons ➙ Turn system icons on or off.
• For Windows 10: Click Settings ➙ System ➙ Notifications & actions ➙ Turn system icons
on or off.
c. Turn on the desired icon.
3. If the icon is still not displayed in the Windows notification area, repeat step 1.

Using a disc
This section provides information about using a disc and the optical drive.

Guidelines about using the optical drive
When using the optical drive, follow these guidelines:
• Do not place the computer in a location where the drive is exposed to any of the following conditions:
– High temperature
– High humidity
– Excessive dust
– Excessive vibration or sudden shock
– An inclined surface
– Direct sunlight
• Do not insert any object other than a disc into the drive.
• Do not insert damaged discs into the drive. Warped, scratched, or dirty discs can damage the drive.
• Before moving the computer, remove the disc from the drive.

Handling and storing a disc
When handling and storing a disc, follow these guidelines:
• Hold the disc by its edges. Do not touch the surface of the side that is not labeled.
• To remove dust or fingerprints, wipe the disc with a clean, soft cloth from the center to the outside. Wiping
the disc in a circular direction might cause loss of data.
• Do not write or stick paper on the disc.
• Do not scratch or mark the disc.
• Do not place or store the disc in direct sunlight.
• Do not use benzene, thinners, or other cleaners to clean the disc.
• Do not drop or bend the disc.

Playing and removing a disc
To play a disc, do the following:
1. With the computer on, press the eject/close button on the front of the optical drive. The tray slides
out of the drive.
2. Insert a disc into the tray. Some optical drive has a snap hub in the center of the tray. If your drive has a
snap hub, support the tray with one hand and then push center of the disc until it snaps into place.
3. Press the eject/close button again or gently push the tray forward to close the tray. The disc player
program starts automatically. For more information, refer to the help system of the disc player program.
To remove a disc from the optical drive, do the following:
1. With the computer on, press the eject/close button on the front of the optical drive. The tray slides
out of the drive.
2. Carefully remove the disc from the tray.
3. Press the eject/close button again or gently push the tray forward to close the tray.
Note: If the tray does not slide out of the drive when you press the eject/close button, turn off your computer.
Then, insert a straightened paper clip into the emergency-eject hole adjacent to the eject/close button.
Use the emergency eject only in an emergency.

ThinkCentre M800 and M900 Hardware Maintenance Manual

Recording a disc
If your optical drive supports recording, you can record a disc.

Recording a disc using Windows tools
To record a disc using Windows tools, do one of the following:
• Burn a disc using the AutoPlay window.
1. Ensure that the disc is played automatically.
a. Click the Start button to open the Start menu.
b. Depending on your Windows version, do one of the following:
– For Windows 7: Click Control Panel. View Control Panel using Large icons or Small icons,
and then click AutoPlay.
– For Windows 10: Click Settings ➙ Devices ➙ AutoPlay.
c. Select or turn on Use AutoPlay for all media and devices.
2. Insert a recordable disc into the optical drive that supports recording. The AutoPlay window opens.
3. Follow the instructions on the screen.
• Burn a disc using Windows Media® Player.
1. Insert a recordable disc into the optical drive that supports recording.
2. Open Windows Media Player. See “Accessing a program on your computer” on page 39.
3. Follow the instructions on the screen.
• Burn a disc from an ISO file.
1. Insert a recordable disc into the optical drive that supports recording.
2. Double-click the ISO file.
3. Follow the instructions on the screen.

Recording a disc using preinstalled programs
To record a disc using preinstalled programs, do the following:
1. Insert a recordable disc into the optical drive that supports recording.
2. Open the PowerDVD Create, PowerProducer, or Power2Go program. See “Accessing a program on
your computer” on page 39.
3. Follow the instructions on the screen.

Connecting to a network
This section provides information about connecting to a network. If you cannot connect your computer to a
network, see “Networking problems” on page 73.

Connecting to an Ethernet LAN
You can connect your computer to an Ethernet LAN by connecting an Ethernet cable to the Ethernet
connector.
DANGER
To avoid the risk of electrical shock, do not connect the telephone cable to the Ethernet connector.

Chapter 3. Using your computer

Connecting to a wireless LAN
You can connect your computer to a wireless LAN without the use of an Ethernet cable but by means of
radio waves only.
Note: The wireless LAN feature is supported only on some models.
To establish a wireless-LAN connection, do the following:
1. Ensure that a wireless LAN is available and the wireless LAN feature on your computer is working.
2. Click the wireless-network-connection-status icon in the Windows notification area to display available
wireless networks.
Note: If the wireless-network-connection-status icon is not displayed in the Windows notification area,
add the icon to the notification area. See “Adding an icon to the Windows notification area” on page 43.
3. Click a wireless LAN, and then click Connect to connect your computer to it. Provide required
information if needed.

Connecting to a Bluetooth-enabled device
Bluetooth is a short-range wireless communications technology. Use Bluetooth to establish a wireless
connection between your computer and another Bluetooth-enabled device within a distance of about 10
m (32.8 ft).
Note: The Bluetooth feature is supported only on some models.
To connect to a Bluetooth-enabled device, do the following:
1. Ensure that the Bluetooth feature on your computer is working and the Bluetooth-enabled device is
located within a distance of about 10 m (32.8 ft) from your computer.
2. Click the Bluetooth icon in the Windows notification area on the taskbar. Then, click Add a Device and
follow the instructions on the screen.
Note: If the Bluetooth icon is not displayed in the Windows notification area, add the icon to the
notification area. See “Adding an icon to the Windows notification area” on page 43.

ThinkCentre M800 and M900 Hardware Maintenance Manual

Chapter 4. You and your computer
This chapter contains the following topics:
•

“Arranging your workspace” on page 47

•

“Accessibility information” on page 48

•

“Cleaning your computer” on page 51

•

“Maintenance” on page 51

•

“Moving your computer” on page 53

Arranging your workspace
Arrange your workspace to suit your needs and the kind of work you do. This section provides information
about the factors that affect the way you arrange your workspace.

Glare and lighting
Position the monitor to minimize glare and reflections from overhead lights, windows, and other light sources.
Reflected light from shiny surfaces can cause annoying reflections on your screen. When possible, place
the monitor at right angles to windows and other light sources. If necessary, reduce overhead lighting
by turning off lights or using lower wattage bulbs. If you install the monitor near a window, use curtains
or blinds to block the sunlight. You can adjust the brightness and contrast controls on the monitor as the
room lighting changes throughout the day.
Where it is impossible to avoid reflections or to adjust the lighting, an antiglare filter placed over the screen
might be helpful. However, these filters might affect the clarity of the image on the screen; try them only after
you have exhausted other methods of reducing glare.

Air circulation
Your computer produces heat. The computer has a fan that pulls in fresh air and forces out hot air through
the air vents. Blocking the air vents can cause overheating, which might result in a malfunction or damage.
Position the computer so that nothing blocks the air vents; usually, 51 mm (2 inches) of air space is sufficient.
Ensure that the vented air is not blowing on people.

Electrical outlet locations and cable lengths
The following factors might determine the final placement of your computer:
• Locations of electrical outlets
• Length of power cords or power adapters
• Length of the cables that are connected to other devices
For more information about power cords or power adapters, see “Power cords and power adapters” on
page 1.

Comfort
Although no single working position is ideal for everyone, here are a few guidelines to help you find a position
that suits you best. The following figure sets an example for your reference.

• Screen position: Keep the screen at a comfortable viewing distance, usually 51-61 cm (20-24 inches).
Then, adjust the screen so that the top of the screen is at or slightly below eye level and you can view it
without twisting your body.
• Chair position: Use a chair that gives you good back support and seat height adjustment. Use chair
adjustments to best suit your desired posture.
• Head position: Keep your head and neck in a comfortable and neutral (vertical or upright) position.
• Arm and hand positions: Keep your forearms, wrists, and hands in a relaxed and neutral (horizontal)
position. Type with a soft touch without pounding the keys.
• Leg position: Keep your thighs parallel to the floor and your feet flat on the floor or on a footrest.
Make minor modifications in your working posture to deter the onset of discomfort caused by long periods of
working in the same position. Frequent, short breaks from your work also help to prevent minor discomfort
associated with your working posture.

Accessibility information
Lenovo is committed to providing users who have hearing, vision, and mobility limitations with greater
access to information and technology. This section provides information about the ways these users can get
the most out of their computer experience. You also can get the most up-to-date accessibility information
from the following Web site:
http://www.lenovo.com/accessibility
Keyboard shortcuts
The following table contains keyboard shortcuts that can help make your computer easier to use.
Note: Depending on your keyboard, some of the following keyboard shortcuts might not be available.
Keyboard shortcut

Function

Windows logo key + U

Open Ease of Access Center

Right Shift for eight seconds

Turn on or turn off Filter Keys

Shift five times

Turn on or turn off Sticky Keys

Num Lock for five seconds

Turn on or turn off Toggle Keys

Left Alt+Left Shift+Num Lock

Turn on or turn off Mouse Keys

Left Alt+Left Shift+PrtScn (or PrtSc)

Turn on or turn off High Contrast

For more information, go to http://windows.microsoft.com/, and then perform a search using any of the
following keywords: keyboard shortcuts, key combinations, shortcut keys.

ThinkCentre M800 and M900 Hardware Maintenance Manual

Ease of Access Center
Ease of Access Center on the Windows operating system enables users to configure their computers to
suit their physical and cognitive needs.
To use Ease of Access Center, do the following:
1. Click the Start button to open the Start menu.
2. Depending on your Windows version, do one of the following:
• For Windows 7: Click Control Panel. View Control Panel using Large icons or Small icons, and
then click Ease of Access Center.
• For Windows 10: Click Settings ➙ Ease of Access.
3. Choose the appropriate tool by following the instructions on the screen.
Ease of Access Center mainly includes the following tools:
• Magnifier
Magnifier is a useful utility that enlarges the entire screen or part of the screen so that you can see
the items better.
• Narrator
Narrator is a screen reader that reads aloud what is displayed on the screen and describes events such as
error messages.
• On-Screen Keyboard
If you prefer to type or enter data into your computer using a mouse, joystick, or other pointing device
instead of a physical keyboard, you can use On-Screen Keyboard. On-Screen Keyboard displays a visual
keyboard with all the standard keys.
• High Contrast
High Contrast is a feature that heightens the color contrast of some text and images on your screen. As a
result, those items are more distinct and easier to identify.
• Personalized keyboard
Adjust keyboard settings to make your keyboard easier to use. For example, you can use your keyboard
to control the pointer and type certain key combinations easier.
• Personalized mouse
Adjust mouse settings to make your mouse easier to use. For example, you can change the pointer
appearance and make it easier to manage windows with the mouse.
Speech Recognition
Speech Recognition enables you to control your computer by voice.
Using only your voice, you can start programs, open menus, click objects on the screen, dictate text into
documents, and write and send e-mails. Everything you do with the keyboard and mouse can be done with
only your voice.
To use Speech Recognition, do the following:
1. Depending on your Windows version, do one of the following:
• For Windows 7: Click the Start button to open the Start menu.
• For Windows 10: Right-click the Start button to open the Start context menu.
2. Click Control Panel. View Control Panel using Large icons or Small icons, and then click Speech
Recognition.

Chapter 4. You and your computer

3. Follow the instructions on the screen.
Screen-reader technologies
Screen-reader technologies are primarily focused on software program interfaces, help information systems,
and various online documents. For additional information about screen readers, see the following:
• Using PDFs with screen readers:
http://www.adobe.com/accessibility.html?promoid=DJGVE
• Using the JAWS screen reader:
http://www.freedomscientific.com/jaws-hq.asp
• Using the NVDA screen reader:
http://www.nvaccess.org/
Screen resolution
You can make the text and images on your screen easier to read by adjusting the screen resolution of your
computer.
To adjust the screen resolution, do the following:
1. Right-click a blank area on the desktop.
2. Depending on your Windows version, do one of the following:
• For Windows 7: Click Screen resolution.
• For Windows 10: Click Display settings. On the Display tab, click Advanced display settings.
3. Follow the instructions on the screen.
Note: Setting the resolution too low might prevent some items from fitting on the screen.
Customizable item size
You can make the items on your screen easier to read by changing the item size.
• To change the item size temporarily, use the Magnifier tool in Ease of Access Center. See “Ease of
Access Center” on page 49.
• To change the item size permanently, do the following:
– Change the size of all the items on your screen.
1. Right-click a blank area on the desktop.
2. Depending on your Windows version, do one of the following:
– For Windows 7: Click Screen resolution ➙ Make text and other items larger or smaller.
– For Windows 10: Click Display settings.
3. Change the item size by following the instructions on the screen.
4. Click Apply. This change will take effect the next time you log in to the operating system.
– Change the size of the items on a Web page.
Press and hold Ctrl, and then press the plus-sign key (+) to enlarge or the minus-sign key (-) to
reduce the text size.
– Change the size of the items on the desktop or a window.
Note: This function might not work on some windows.
If your mouse has a wheel, press and hold Ctrl, and then scroll the wheel to change the item size.

ThinkCentre M800 and M900 Hardware Maintenance Manual

Industry-standard connectors
Your computer provides industry-standard connectors that enable you to connect assistive devices.
For more information about the location and function of the connectors, see “Hardware locations” on
page 27.
TTY/TDD conversion modem
Your computer supports the use of a text telephone (TTY) or the telecommunications device for the deaf
(TDD) conversion modem. The modem must be connected between your computer and a TTY/TDD
telephone. Then, you can type a message on your computer and send it to the telephone.
Documentation in accessible formats
Lenovo provides electronic documentation in accessible formats, such as properly tagged PDF files or
HyperText Markup Language (HTML) files. Lenovo electronic documentation is developed to ensure
that visually impaired users can read the documentation through a screen reader. Each image in the
documentation also includes adequate alternative text so that visually impaired users can understand the
image when they use a screen reader.

Cleaning your computer
CAUTION:
Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected
to the computer.
It is a good practice to clean your computer periodically to protect the surfaces and ensure trouble-free
operation. Use only mild cleaning solutions and a damp cloth to clean the painted surfaces of the computer.
Dust buildup compounds problems associated with glare, so remember to clean the screen periodically.
Wipe the screen surface gently with a soft, dry cloth, or blow on the screen to remove grit and other loose
particles. Depending on the type of the screen, moisten a soft, lint-free cloth with an LCD cleaner or liquid
glass cleaner and then wipe the screen surface.

Maintenance
With appropriate care and maintenance, your computer will serve you reliably. This section provides
information about maintaining your computer so that it can keep working in top order.

Basic maintenance tips
Here are some basic points about keeping your computer functioning properly:
• Keep your computer in a clean, dry environment. Ensure that the computer rests on a flat, steady surface.
• Do not cover any of air vents. These air vents provide airflow to keep your computer from overheating.
• Keep food and drinks away from all parts of your computer. Food particles and spills might make the
keyboard and mouse stick and unusable.
• Do not get the power switches or other controls wet. Moisture can damage these parts and cause an
electrical hazard.
• Always disconnect a power cord by grasping the plug instead of the cord.

Chapter 4. You and your computer

Good maintenance practices
By performing a few good maintenance practices, you can maintain good computer performance, protect
your data, and be prepared in case of a computer failure.
• Keep your computer software, device drivers, and operating system up-to-date. See “Keeping your
computer current” on page 52.
• Empty your recycle bin on a regular basis.
• Clean out your Inbox, Sent Items, and Deleted Items folders in your e-mail application on a regular basis.
• Clean up files and free up storage drive space and memory space occasionally to prevent performance
problems. See “Performance problems” on page 75.
• Keep a log book. Entries might include major software or hardware changes, device-driver updates,
intermittent problems and what you did to resolve them, and other issues you might have experienced.
The cause of a problem might be change in hardware, change in software, or any other actions that might
have taken place. A log book can help you or a Lenovo technician determine the cause of a problem.
• Back up your data on the storage drive regularly. You can restore the storage drive from a backup.
To back up your data, do one of the following:
– For Windows 7: Open the Rescue and Recovery program. See “Accessing a program on your
computer” on page 39. For more information about backing up your data, refer to the help system
of the program.
– For Windows 10: Right-click the Start button to open the Start context menu, and then click Control
Panel. View Control Panel using Large icons or Small icons, and then click File History. Follow the
instructions on the screen.
• Create a recovery medium as early as possible. You can use the recovery medium to recover your
operating system even if Windows fails to start up.
To create a recovery medium, do one of the following:
– For Windows 7: Open the Create Recovery Media program. See “Accessing a program on your
computer” on page 39. For more information about creating a recovery medium, refer to the help
system of the program.
– For Windows 10: Right-click the Start button to open the Start context menu, and then click Control
Panel. View Control Panel using Large icons or Small icons, and then click Recovery. Follow the
instructions on the screen.
• For Windows 7, create a rescue medium as early as possible. You can use the rescue medium to
recover from failures that prevent you from gaining access to the Rescue and Recovery workspace
on your storage drive.
To create a rescue medium, open the Rescue and Recovery program. See “Accessing a program on your
computer” on page 39. For more information about creating a rescue medium, refer to the help system
of the program.

Keeping your computer current
In most cases, it is a good practice to have the most up-to-date operating system update patches, software
programs, and device drivers. This section provides information about how to get the latest updates for your
computer.

Getting the latest device drivers
Attention: Reinstalling device drivers will change the current configuration of your computer.
To get the latest device drivers for your computer, do one of the following:
• Download the device drivers that are preinstalled on your computer. Go to http://www.lenovo.com/drivers.

ThinkCentre M800 and M900 Hardware Maintenance Manual

• Use the Lenovo program or Windows Update. See “Getting the latest system updates” on page 53.
Note: The device drivers provided by Windows Update might not be tested by Lenovo. It is recommended
that you get device drivers from Lenovo.

Getting the latest system updates
To get the latest system updates for your computer, ensure that your computer is connected to the Internet
and do one of the following:
• Use one of the following Lenovo programs to get the system updates, such as device driver updates,
software updates, and BIOS updates:
– For Windows 7: Use the System Update program.
– For Windows 10: Use the Lenovo Companion program.
To open the System Update or Lenovo Companion program, see “Accessing a program on your computer”
on page 39. For more information about using the program, refer to the help system of the program.
• Use Windows Update to get the system updates, such as security fixes, new versions of Windows
components, and device driver updates.
1. Click the Start button to open the Start menu.
2. Depending on your Windows version, do one of the following:
– For Windows 7: Click Control Panel. View Control Panel using Large icons or Small icons, and
then click Windows Update.
– For Windows 10: Click Settings ➙ Update & security ➙ Windows Update.
3. Follow the instructions on the screen.

Moving your computer
Before moving your computer, take the following precautions:
1. Back up your data on the storage drive. See “Good maintenance practices” on page 52.
2. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
3. If you saved the original shipping cartons and packing materials, use them to pack the units. If you are
using different cartons, cushion the units to avoid damage.
Moving your computer to another country or region
When you move your computer to another country or region, you must take local electrical standards into
consideration. If the local electrical outlet style is different from the type you are currently using, contact the
Lenovo Customer Support Center to purchase either an electrical plug adapter or a new power cord. For a
list of Lenovo Support phone numbers, go to http://www.lenovo.com/support/phone. If you cannot find the
support telephone number for your country or region, contact your Lenovo reseller.

Chapter 4. You and your computer

ThinkCentre M800 and M900 Hardware Maintenance Manual

Chapter 5. Security
This chapter contains the following topics:
•

“Locking your computer” on page 55

•

“Viewing and changing security settings in the Setup Utility program” on page 58

•

“Preventing unauthorized access to your computer” on page 58

•

“Using fingerprint authentication” on page 59

•

“Using the cover presence switch” on page 63

•

“Using and understanding firewalls” on page 59

•

“Protecting data against viruses” on page 59

•

“Computrace Agent software embedded in firmware” on page 60

•

“Trusted Platform Module (TPM)” on page 60

Locking your computer
This section provides information about locking your computer with the locking devices to keep your
computer safe.

Locking the computer cover
Locking the computer cover helps prevent unauthorized people from gaining access to the inside of your
computer. Your computer comes with a padlock loop so that the computer cover cannot be removed
when a padlock is installed.

Figure 7. Installing a padlock

ThinkCentre M800 and M900 Hardware Maintenance Manual

Attaching a Kensington-style cable lock
You can use a Kensington-style cable lock to secure your computer to a desk, table, or other non-permanent
fixture. The cable lock connects to the security-lock slot at the rear of your computer. Depending on the type
selected, the cable lock can be operated with a key or combination. The cable lock also locks the buttons
used to open the computer cover. This is the same type of lock used with many notebook computers. You
can order such a cable lock directly from Lenovo by searching for Kensington at:
http://www.lenovo.com/support

Figure 8. Kensington-style cable lock

Chapter 5. Security

Attaching a cable lock
A cable lock can be used to secure devices, such as the keyboard and the mouse, by locking the device
cables to your computer. The cable lock connects to the cable-lock slots on the rear of your computer.
To install a cable lock, do the following:
1. Insert the clip 1 into the cable-lock slot 4 .
2. Pull the cables you want to lock through the dents in the cable lock.
3. Press the clip 2 into the cable-lock slot 3 until it snaps into position.

Figure 9. Installing a cable lock

Viewing and changing security settings in the Setup Utility program
To view and change security settings in the Setup Utility program, do the following:
1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 61.
2. Select Security.
3. Follow the instructions on the right side of the screen to view and change security settings. You can
refer to “Using the Setup Utility program” on page 61 to get basic information about some major
security settings.
4. Exit the Setup Utility program. See “Exiting the Setup Utility program” on page 66.

Preventing unauthorized access to your computer
You can use BIOS passwords and Windows accounts to prevent unauthorized access to your computer and
data.

ThinkCentre M800 and M900 Hardware Maintenance Manual

• To use BIOS passwords, see “Using BIOS passwords” on page 64.
• To use Windows accounts, do the following:
1. Click the Start button to open the Start menu.
2. Depending on your Windows version, do one of the following:
– For Windows 7: Click Control Panel ➙ User Accounts.
– For Windows 10: Click Settings ➙ Accounts.
3. Follow the instructions on the screen.

Using fingerprint authentication
If your keyboard has a fingerprint reader, you can use fingerprint authentication to replace passwords for
simple and secure user access. To use fingerprint authentication, first enroll your fingerprints and associate
them with your passwords (such as the power-on password, hard disk password, and Windows password).
Use the fingerprint reader and the fingerprint program to complete this procedure.
To use fingerprint authentication, do one of the following:
• For Windows 7: Use the Fingerprint Manager Pro or ThinkVantage Fingerprint Software program provided
by Lenovo. To open the program, see “Accessing a program on your computer” on page 39. For more
information about using the program, refer to the help system of the program.
• For Windows 10: Use the fingerprint tool provided by Windows. Click the Start button to open the Start
menu, and then click Settings ➙ Accounts ➙ Sign-in options. Follow the instructions on the screen.
To use the fingerprint reader, refer to the documentation shipped with the fingerprint keyboard or located on
the Lenovo Support Web site at http://www.lenovo.com/support/keyboards.

Using and understanding firewalls
A firewall can be hardware, software, or a combination of both depending on the level of security required.
Firewalls work on a set of rules to determine which inbound and outbound connections are authorized. If
your computer is preinstalled with a firewall program, it helps protect against computer Internet security
threats, unauthorized access, intrusions, and Internet attacks. It also protects your privacy. For more
information about how to use the firewall program, refer to the help system of your firewall program.
To use Windows Firewall, do the following
1. Depending on your Windows version, do one of the following:
• For Windows 7: Click the Start button to open the Start menu.
• For Windows 10: Right-click the Start button to open the Start context menu.
2. Click Control Panel. View Control Panel using Large icons or Small icons, and then click Windows
Firewall.
3. Follow the instructions on the screen.

Protecting data against viruses
Your computer is preinstalled with an antivirus program to help you guard against, detect, and eliminate
viruses.
Lenovo provides a full version of antivirus software on your computer with a free 30-day subscription. After
30 days, you must renew the license to continue receiving the antivirus software updates.

Chapter 5. Security

Note: Virus definition files must be kept up-to-date to guard against new viruses.
For more information about how to use your antivirus software, refer to the help system of your antivirus
software.

Computrace Agent software embedded in firmware
The Computrace Agent software is an IT asset management and computer theft recovery solution. The
software detects if changes have been made on the computer, such as hardware, software, or the computer
call-in location. You might have to purchase a subscription to activate the Computrace Agent software.

Trusted Platform Module (TPM)
TPM is a secure cryptoprocessor that can store cryptographic keys that protect information stored in your
computer.

ThinkCentre M800 and M900 Hardware Maintenance Manual

Chapter 6. Advanced configuration
This chapter contains the following topics:
•

“Using the Setup Utility program” on page 61

•

“Updating the BIOS” on page 66

Using the Setup Utility program
The Setup Utility program is used to view and change the configuration settings of your computer. This
section provides information about only the major configuration settings available in the program.
Note: The operating system settings might override any similar settings in the Setup Utility program.

Starting the Setup Utility program
To start the Setup Utility program, do the following:
1. Turn on or restart your computer.
2. Before Windows starts up, repeatedly press and release the F1 key until the Setup Utility program
opens. If a BIOS password has been set, the Setup Utility program will not open until you enter the
correct password. For more information, see “Using BIOS passwords” on page 64.
Note: For some keyboards, you might need to press Fn+F1 to open the Setup Utility program.
To view and change the configuration settings, follow the instructions on the right side of the screen. The
keys used to perform various tasks are displayed at the bottom of the screen.

Enabling or disabling a device
This section provides information about how to enable or disable user access to hardware devices (such
as USB connectors or storage drives).
To enable or disable a device, do the following:
1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 61.
2. Select Devices.
3. Select the device you want to enable or disable and press Enter.
4. Select the desired setting and press Enter.
5. Exit the Setup Utility program. See “Exiting the Setup Utility program” on page 66.

Enabling or disabling the Automatic Power On features
If you enable the Automatic Power On features, your computer will start up automatically.
To enable or disable the Automatic Power On features, do the following:
1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 61.
2. Select Power ➙ Automatic Power On and press Enter.
3. Select the feature you want to enable or disable and press Enter.
4. Select the desired setting and press Enter.
5. Exit the Setup Utility program. See “Exiting the Setup Utility program” on page 66.

Enabling or disabling ErP LPS compliance mode
Lenovo computers meet the eco-design requirements of the ErP Lot 3 regulation. For more information, go
to:
http://www.lenovo.com/ecodeclaration
You can enable ErP LPS compliance mode in the Setup Utility program to reduce the consumption of
electricity when your computer is off or in sleep mode.
To enable or disable ErP LPS compliance mode, do the following:
1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 61.
2. Select Power ➙ Enhanced Power Saving Mode and press Enter.
3. Depending on whether you select Enabled or Disabled, do one of the following:
• If you select Enabled, press Enter. Then, disable the Wake on LAN feature. See “Enabling or
disabling the Automatic Power On features” on page 61.
• If you select Disabled, press Enter. Then, go to the next step.
4. Exit the Setup Utility program. See “Exiting the Setup Utility program” on page 66.
When ErP LPS compliance mode is enabled, you can wake up your computer by doing one of the following:
• Press the power button.
• Enable the Wake Up on Alarm feature to make your computer wake up at a set time. See “Enabling or
disabling the Automatic Power On features” on page 61.
• Enable the After Power Loss feature to make your computer wake up when the power supply resumes
after a sudden loss of electricity.
1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 61.
2. Select Power ➙ After Power Loss and press Enter.
3. Select Power On and press Enter.
4. Exit the Setup Utility program. See “Exiting the Setup Utility program” on page 66.

Changing ICE Performance Mode
You can adjust the acoustic and thermal performance of your computer through the ICE Performance
Mode menu. Two choices are available:
• Better Acoustic Performance (default setting)
• Better Thermal Performance
By enabling Better Acoustic Performance, your computer will run with less noise at a normal thermal
level. By enabling Better Thermal Performance, your computer will run at a better thermal level with
normal acoustic performance.
To switch between better acoustic performance and better thermal performance, do the following:
1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 61.
2. Select Power ➙ Intelligent Cooling Engine (ICE) and press Enter.
3. Select ICE Performance Mode and press Enter.
4. Select Better Acoustic Performance or Better Thermal Performance as desired and press Enter.
5. Exit the Setup Utility program. See “Exiting the Setup Utility program” on page 66.

ThinkCentre M800 and M900 Hardware Maintenance Manual

Enabling or disabling the ICE Thermal Alert feature
If you enable the ICE thermal alert feature, when critical thermal situations occur, such as malfunctioning
fans, abnormally high temperature, or poor cooling performances, an alert log will be written into the
Windows system log. The alert log can help you identify the thermal problems.
To enable or disable the ICE Thermal Alert feature, do the following:
1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 61.
2. Select Power ➙ Intelligent Cooling Engine (ICE) and press Enter.
3. Select ICE Thermal Alert and press Enter.
4. Select the desired setting and press Enter.
5. Exit the Setup Utility program. See “Exiting the Setup Utility program” on page 66.

Enabling or disabling the Configuration Change Detection feature
If you enable the Configuration Change Detection feature, when the POST detects the configuration changes
of some hardware devices (such as storage drives or memory modules), an error message will be displayed
when you turn on the computer.
To enable or disable the Configuration Change Detection feature, do the following:
1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 61.
2. Select Security ➙ Configuration Change Detection and press Enter.
3. Select the desired setting and press Enter.
4. Exit the Setup Utility program. See “Exiting the Setup Utility program” on page 66.
To bypass the error message and log in to the operating system, do one of the following:
• Press the F2 key.
Note: For some keyboards, you might need to press Fn+F2 to bypass the error message.
• Start and then exit the Setup Utility program. See “Starting the Setup Utility program” on page 61 and
“Exiting the Setup Utility program” on page 66.

Using the cover presence switch
The cover presence switch prevents your computer from logging in to the operating system when the
computer cover is not properly installed or closed.
To enable the cover-presence-switch connector on the system board, do the following:
1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 61.
2. Select Security ➙ Chassis Intrusion Detection and press Enter.
3. Select Enabled and press Enter.
4. Exit the Setup Utility program. See “Exiting the Setup Utility program” on page 66.
When the cover-presence-switch connector on the system board is enabled, if the cover presence switch
detects that the computer cover is not correctly installed or closed, an error message will be displayed when
you turn on the computer. To bypass the error message and log in to the operating system, do the following:
1. Properly install or close your computer cover. See Chapter 9 “Installing or replacing hardware” on
page 87.
2. Start and then exit the Setup Utility program. See “Starting the Setup Utility program” on page 61 and
“Exiting the Setup Utility program” on page 66.

Chapter 6. Advanced configuration

Using BIOS passwords
By using the Setup Utility program, you can set passwords to prevent unauthorized access to your computer
and data.
You do not have to set any passwords to use your computer. However, using passwords improves computer
security. If you decide to set any passwords, read the following topics.

Setup Utility program password types
The following types of passwords are available:
• Power-on password
When a power-on password is set, you are prompted to enter a valid password each time the computer is
turned on. The computer cannot be used until the valid password is entered.
• Administrator password
Setting an administrator password deters unauthorized users from changing configuration settings. If you
are responsible for maintaining the configuration settings of several computers, you might want to set
an administrator password.
When an administrator password is set, you are prompted to enter a valid password each time you
try to access the Setup Utility program. The Setup Utility program cannot be accessed until a valid
password is entered.
If both the power-on password and administrator password are set, you can enter either password.
However, you must use your administrator password to change any configuration settings.
• Hard disk password
Setting a hard disk password prevents unauthorized access to the data on the storage drive. When a
hard disk password is set, you are prompted to enter a valid password each time you try to access
the storage drive.
Notes:
– After you set a hard disk password, your data on the storage drive is protected even if the storage drive
is removed from one computer and installed in another.
– If the hard disk password is forgotten, there is no way to reset the password or recover data from
the storage drive.

Password considerations
A password can be any combination of up to 64 alphabetic and numeric characters. For security reasons, it
is recommended to use a strong password that cannot be easily compromised.
Note: The Setup Utility program passwords are not case sensitive.
To set a strong password, consider the following guidelines:
• Have at least eight characters in length
• Contain at least one alphabetic character and one numeric character
• Not be your name or your user name
• Not be a common word or a common name
• Be significantly different from your previous passwords

Setting, changing, and deleting a password
To set, change, or delete a password, do the following:
1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 61.
2. Select Security.
64

ThinkCentre M800 and M900 Hardware Maintenance Manual

3. Depending on the password type, select Set Power-On Password, Set Administrator Password, or
Hard Disk Password and press Enter.
4. Follow the instructions on the right side of the screen to set, change, or delete a password.
Note: A password can be any combination of up to 64 alphabetic and numeric characters. For more
information, see “Password considerations” on page 64.
5. Exit the Setup Utility program. See “Exiting the Setup Utility program” on page 66.

Erasing lost or forgotten passwords (clearing CMOS)
This section provides instructions on how to erase lost or forgotten passwords, such as a user password.
To erase a lost or forgotten password, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See Chapter 9 “Installing or replacing hardware” on page 87.
3. Locate the Clear CMOS /Recovery jumper on the system board. See “Hardware locations” on page 27.
4. Move the jumper from the standard position (pin 1 and pin 2) to the maintenance position (pin 2 and
pin 3).
5. Reinstall the computer cover and connect the power cord. See Chapter 9 “Installing or replacing
hardware” on page 87.
6. Turn on the computer and leave it on for approximately 10 seconds. Then, turn off the computer by
holding the power button for approximately five seconds.
7. Repeat step 1 through step 2.
8. Move the Clear CMOS /Recovery jumper back to the standard position (pin 1 and pin 2).
9. Reinstall the computer cover and connect the power cord.

Selecting a startup device
If your computer does not start up from a device as expected, you can choose to change the startup device
sequence permanently or select a temporary startup device.

Changing the startup device sequence permanently
To change the startup device sequence permanently, do the following:
1. Depending on the type of the storage device, do one of the following:
• If the storage device is internal, go to step 2.
• If the storage device is a disc, ensure that your computer is on or turn on the computer. Then,
insert the disc into the optical drive.
• If the storage device is an external device other than a disc, connect the storage device to the
computer.
2. Start the Setup Utility program. See “Starting the Setup Utility program” on page 61.
3. Select Startup.
4. Follow the instructions on the right side of the screen to change the startup device sequence.
5. Exit the Setup Utility program. See “Exiting the Setup Utility program” on page 66.

Selecting a temporary startup device
Note: Not all discs and storage drives are bootable.

Chapter 6. Advanced configuration

To select a temporary startup device, do the following:
1. Depending on the type of the storage device, do one of the following:
• If the storage device is internal, go to step 2.
• If the storage device is a disc, ensure that your computer is on or turn on the computer. Then,
insert the disc into the optical drive.
• If the storage device is an external device other than a disc, connect the storage device to the
computer.
2. Turn on or restart the computer. Before Windows starts up, repeatedly press and release the F12 key
until Startup Device Menu is displayed.
Note: For some keyboards, you might need to press Fn+F12 to display Startup Device Menu.
3. Select the desired storage device and press Enter. The computer will start up from the device you select.
If you want to select a permanent startup device, select Enter Setup on Startup Device Menu and press
Enter to start the Setup Utility program. For more information about how to select a permanent startup
device, see “Changing the startup device sequence permanently” on page 65.

Exiting the Setup Utility program
To exit the Setup Utility program, do one of the following:
• If you want to save the new settings, press the F10 key. Then, select Yes in the window displayed
and press Enter.
Note: For some keyboards, you might need to press Fn+F10 to exit the Setup Utility program.
• If you do not want to save the new settings, select Exit ➙ Discard Changes and Exit and press Enter.
Then, select Yes in the window displayed and press Enter.

Updating the BIOS
When you install a new program, hardware device, or device driver, you might be informed to update
the BIOS. You can update the BIOS from your operating system or a flash update disc (supported only
on some models).
To update the BIOS, do the following:
1. Go to http://www.lenovo.com/drivers.
2. Download the flash BIOS update driver for the operating system version or the ISO image version (used
to create a flash update disc). Then, download the installation instructions for the flash BIOS update
driver you download.
3. Print the installation instructions you download and follow the instructions to update the BIOS.
Note: If you want to update the BIOS from a flash update disc, the installation instructions might not provide
the information about how to record the update disc. See “Recording a disc” on page 45.

Recovering from a BIOS update failure
To recover from a BIOS update failure, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See Chapter 9 “Installing or replacing hardware” on page 87.
3. Locate the Clear CMOS /Recovery jumper on the system board. See “Hardware locations” on page 27.

ThinkCentre M800 and M900 Hardware Maintenance Manual

4. Remove any parts and cables that impede your access to the Clear CMOS /Recovery jumper.
5. Move the jumper from the standard position (pin 1 and pin 2) to the maintenance position (pin 2 and
pin 3).
6. Reinstall the parts and cables that were removed.
7. Reinstall the computer cover and reconnect any cables that were disconnected. See Chapter 9
“Installing or replacing hardware” on page 87.
8. Turn on the computer and insert the BIOS update disc into the optical drive. Wait a few minutes. The
recovery process begins. After the recovery process is completed, your computer will shut down
automatically.
Note: If the computer does not start up from the disc, select the disc as the startup device. See
“Selecting a temporary startup device” on page 65.
9. Repeat step 1 through step 4.
10. Move the Clear CMOS /Recovery jumper back to the standard position (pin 1 and pin 2).
11. Repeat step 6 through step 7. Then, turn on your computer.

Chapter 6. Advanced configuration

ThinkCentre M800 and M900 Hardware Maintenance Manual

Chapter 7. Troubleshooting, diagnostics, and recovery
This chapter provides solutions to resolve your computer problems. Follow the steps in the basic procedure
for resolving computer problems, which helps you make good use of the troubleshooting, diagnostics,
and recovery information.
•

“Basic procedure for resolving computer problems” on page 69

•

“Troubleshooting” on page 69

•

“Diagnostics” on page 77

•

“Recovery information” on page 78

Basic procedure for resolving computer problems
It is recommended that you use the following procedure to resolve computer problems you are experiencing:
1. Ensure that:
a. The cables for all connected devices are connected correctly and securely.
b. All connected devices that require ac power are connected to properly grounded, functioning
electrical outlets.
c. All connected devices are enabled in the BIOS settings of your computer. See “Enabling or disabling
a device” on page 61.
If these actions do not resolve your problem, continue with the next step.
2. Use an antivirus program to see if your computer has been infected by a virus. If the program detects
a virus, remove the virus. If the antivirus program does not resolve your problem, continue with the
next step.
3. Go to “Troubleshooting” on page 69 and follow the instructions for the type of problem you are
experiencing. If these troubleshooting instructions do not resolve your problem, continue with the
next step.
4. Run the diagnostic program. See “Diagnostics” on page 77. If the diagnostic program does not resolve
your problem, continue with the next step.
5. Recover your operating system. See “Recovery information” on page 78.
6. If none of these actions solve your problem, contact the Lenovo Customer Support Center. For a list of
Lenovo Support phone numbers, go to http://www.lenovo.com/support/phone. For more information
about help, service, and technical assistance, see Chapter 10 “Getting information, help, and service”
on page 135.

Troubleshooting
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
Use the troubleshooting information to find solutions to problems that have definite symptoms.

Startup problems
This section provides solutions to startup-related problems.

The computer does not start up when you press the power button
Solutions: Ensure that:
• The power cord is correctly connected to the rear of the computer and to a working electrical outlet.

• If your computer has a secondary power switch on the rear of the computer, ensure that it is switched on.
• The power indicator on the front of the computer is on.
• The computer voltage matches the voltage available at the electrical outlet for your country or region.

The operating system fails to start up
Solution: Ensure that the startup sequence includes the device where the operating system resides. Usually,
the operating system is on the storage drive. For more information, see “Changing the startup device
sequence permanently” on page 65.

The computer beeps multiple times before the operating system starts up
Solution: Ensure that no keys are stuck.

Audio problems
This section provides solutions to audio-related problems.

No audio in Windows
Solutions:
• If you are using powered external speakers that have an On/Off control, ensure that:
– The On/Off control is set to the On position.
– The speaker power cable is connected to a properly grounded, functional ac electrical outlet.
• If your external speakers have a volume control, ensure that the volume is not set too low.
• Click the volume icon in the Windows notification area on the taskbar. Ensure that the mute speakers
settings are not selected and none of the volume settings is set too low.
Note: If the volume icon is not displayed in the Windows notification area, add the icon to the notification
area. See “Adding an icon to the Windows notification area” on page 43.
• Some models have a front audio panel you can use to adjust volume. If you have a front audio panel,
ensure that the volume is not set too low.
• Ensure that your external speakers (and headphones, if used) are connected to the correct audio
connector on the computer. Most speaker cables are color-coded to match the connector.
Note: When external-speaker or headphone cables are connected to the audio connector, the internal
speaker, if present, is disabled. In most cases, if an audio adapter is installed in one of the expansion
slots, the audio function built into the system board is disabled. Therefore, you must use the audio
connectors on the audio adapter.
• Ensure that the program you are running is designed for use in the Microsoft Windows operating system.
If the program is designed to run in DOS, the program does not use the Windows sound feature. The
program must be configured to use SoundBlaster Pro or SoundBlaster emulation.
• Ensure that the audio device drivers are correctly installed.

Sound comes only from one external speaker
Solutions:
• Ensure that the speaker cable is inserted completely into the connector on the computer.
• Ensure that the cable that connects the left speaker to the right speaker is securely connected.
• Click the volume icon in the Windows notification area on the taskbar. Then, click the speaker icon on top
of the volume control. Click the Levels tab and ensure that the Balance settings are set correctly .

ThinkCentre M800 and M900 Hardware Maintenance Manual

Note: If the volume icon is not displayed in the Windows notification area, add the icon to the notification
area. See “Adding an icon to the Windows notification area” on page 43.

CD problems
This section provides solutions to CD-related problems.

A CD or DVD does not work
Solutions:
• If you have multiple CD or DVD drives installed (or a combination of CD and DVD drives), try inserting the
disc into the other drive. In some cases, only one of the drives is connected to the audio subsystem.
• Ensure that the disc is inserted correctly, with its label up.
• Ensure that the disc you are using is clean. To remove dust or fingerprints, wipe the disc clean with a soft
cloth from the center to the outside. Wiping a disc in a circular motion might cause loss of data.
• Ensure that the disc you are using is not scratched or damaged. Try inserting another disc that you
know is good. If you cannot read from a known-good disc, you might have a problem with your optical
drive or the cabling to your optical drive. Ensure that the power cable and signal cable are securely
connected to the drive.

Unable to use a bootable recovery medium, such as the Product Recovery CD, to
start your computer
Solution: Ensure that the CD or DVD drive is in the startup sequence before the storage drive. Refer to
“Selecting a temporary startup device” on page 65 for information on viewing and changing the startup
sequence. Note that on some models the startup sequence is permanently set and cannot be changed.

DVD problems
This section provides solutions to DVD-related problems.

Black screen instead of DVD video
Solutions:
• Restart the DVD player program.
• Try a lower screen resolution or color depth.
• Close any open files, and then restart the computer.

DVD movie does not play
Solutions:
• Ensure that the disc surface is clean and not scratched.
• Check the disc or package for regional coding. You might need to purchase a disc with coding for
the region where you are using your computer.

No audio or intermittent audio while playing a DVD movie
Solutions:
• Check the volume control settings on your computer and on your speakers.
• Ensure that the disc surface is clean and not scratched.
• Check all cable connections to and from the speakers.
• Use the DVD menu for the video to select a different audio track.

Chapter 7. Troubleshooting, diagnostics, and recovery

Playback is slow or choppy
Solutions:
• Disable any background programs, such as AntiVirus or Desktop Themes.
• Ensure that video resolution is set to less than 1152 x 864 pixels.

Invalid disc or no disc found message
Solutions:
• Ensure that a DVD disc is in the drive with the shiny side of the disc facing down.
• Ensure that video resolution is set to less than 1152 x 864 pixels.
• On computers that have a CD-ROM or CD-RW drive in addition to a DVD-ROM drive, ensure that the
DVD disc is in the drive labeled “DVD”.

Intermittent problems
Some problems occur only occasionally and are difficult to repeat.
Solutions:
• Ensure that all cables and cords are securely connected to the computer and connected devices.
• Ensure that when the computer is on, the fan grill is not blocked (there is air flow around the grill), and the
fans are working. If airflow is blocked or the fans are not working, the computer might overheat.
• If Small Computer System Interface (SCSI) devices are installed, ensure that the last external device in
each SCSI chain is terminated correctly. For more information, see your SCSI documentation.

Storage drive problems
Select your symptom from the following list:
•

“Some or all storage drives missing from the Setup Utility program” on page 72

•

“"No Operating System Found" message or the system not starting up from the correct storage drive”
on page 72

Some or all storage drives missing from the Setup Utility program
Symptom: Some or all storage drives missing from the Setup Utility program
Solutions:
• Ensure that all storage drive signal cables and power cables are connected correctly.
• Ensure that your computer is configured correctly to support the storage drives.
– If your computer is installed with five SATA storage drives, ensure that the SATA storage drive
enablement module (one to five storage drives) is installed.
– If your computer is installed with SAS storage drives, ensure that the SAS storage drive enablement
module (one to five storage drives) or the LSI MegaRAID SAS adapter is installed.

"No Operating System Found" message or the system not starting up from the
correct storage drive
Symptom: "No Operating System Found" message or the system not starting up from the correct storage
drive
Solutions:
• Ensure that all storage drive signal cables and power cables are connected correctly.
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• Ensure that the storage drive your computer starts up from is listed as the first startup device in the Setup
Utility program. Refer to “Changing the startup device sequence permanently” on page 65.
Note: In rare cases, the storage drive with the operating system might get corrupted or damaged. In such
cases, you might need to replace the storage drive. Refer to Chapter 9 “Installing or replacing hardware”
on page 87.

Networking problems
This section provides solutions to networking-related problems.

Ethernet LAN problems
My computer cannot be connected to an Ethernet LAN
Solutions:
• Connect the cable from the Ethernet connector to the RJ45 connector of the hub.
• Enable the Ethernet LAN feature in the Setup Utility program. See “Starting the Setup Utility program” on
page 61. Then, follow the instructions on the screen.
• Enable the Ethernet LAN adapter.
1. Depending on your Windows version, do one of the following:
– For Windows 7: Click the Start button to open the Start menu.
– For Windows 10: Right-click the Start button to open the Start context menu.
2. Click Control Panel. View Control Panel using Large icons or Small icons, and then click Network
and Sharing Center ➙ Change adapter settings.
3. Right-click the Ethernet LAN adapter icon and click Enable.
• Update or reinstall the Ethernet LAN driver. See “Keeping your computer current” on page 52.
• Install all networking software that is necessary for your network environment. Check with your LAN
administrator for the necessary networking software.
• Set the same duplex for the switch port and the adapter. If you configured the adapter for full duplex,
ensure that the switch port is also configured for full duplex. Setting the wrong duplex mode might
degrade performance, cause data loss, or result in lost connections.
My computer is a Gigabit Ethernet model and I use a speed of 1000 Mbps, but the connection fails
or errors occur
Solution: Connect the network cable to the Ethernet connector using Category 5 wiring and a 100 BASE-T
hub/switch (not 100 BASE-X).
My computer is a Gigabit Ethernet model, but it cannot be connected to the network at 1000 Mbps,
but at only 100 Mbps
Solutions:
• Try another cable.
• Set the link partner to auto-negotiate.
• Set the switch to be 802.3ab-compliant (gigabit over copper).
The Wake On LAN feature does not work
Solution: Enable the Wake On LAN (WOL) feature in the Setup Utility program. See “Starting the Setup Utility
program” on page 61. Then, follow the instructions on the screen.

Chapter 7. Troubleshooting, diagnostics, and recovery

Wireless LAN problem
Note: The wireless LAN feature is supported only on some models.
The wireless LAN feature does not work
Solutions:
• Enable the wireless LAN feature in the Setup Utility program. See “Starting the Setup Utility program” on
page 61. Then, follow the instructions on the screen.
• For Windows 10, enable the wireless LAN feature in Windows Settings. Click the Start button to open the
Start menu, and then click Settings ➙ Network & Internet ➙ Wi-Fi. Turn on the Wi-Fi feature.
• Enable the wireless LAN adapter.
1. Depending on your Windows version, do one of the following:
– For Windows 7: Click the Start button to open the Start menu.
– For Windows 10: Right-click the Start button to open the Start context menu.
2. Click Control Panel. View Control Panel using Large icons or Small icons, and then click Network
and Sharing Center ➙ Change adapter settings.
3. Right-click the wireless LAN adapter icon and click Enable.
• Update or reinstall the wireless LAN driver. See “Keeping your computer current” on page 52.

Bluetooth problems
Note: The Bluetooth feature is supported only on some models.
The Bluetooth feature does not work
Solutions:
• Enable the Bluetooth feature in the Setup Utility program. See “Starting the Setup Utility program” on
page 61. Then, follow the instructions on the screen.
• Turn on the Bluetooth radios.
1. Depending on your Windows version, do one of the following:
– For Windows 7: Click the Start button to open the Start menu. Right-click Computer, and then
click Properties.
– For Windows 10: Right-click the Start button to open the Start context menu.
2. Click Device Manager. Type the administrator password or provide confirmation if prompted.
3. Right-click the Bluetooth radios under Bluetooth Radios and click Enable.
• Enable the Bluetooth adapter.
1. Depending on your Windows version, do one of the following:
– For Windows 7: Click the Start button to open the Start menu.
– For Windows 10: Right-click the Start button to open the Start context menu.
2. Click Control Panel. View Control Panel using Large icons or Small icons, and then click Network
and Sharing Center ➙ Change adapter settings.
3. Right-click the Bluetooth adapter icon and click Enable.
• Update or reinstall the Bluetooth driver. See “Keeping your computer current” on page 52.
Sound does not come from the Bluetooth headset or headphones
Solution: Set the Bluetooth headset or headphones as the default device.
1. Exit the application that uses the sound device (for example, Windows Media Player).
2. Right-click the volume icon in the Windows notification area on the taskbar.
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Note: If the volume icon is not displayed in the Windows notification area, add the icon to the
notification area. See “Adding an icon to the Windows notification area” on page 43.
3. Click Playback devices.
4. If you are using the Headset profile, select Bluetooth Hands-free Audio, and then click Set Default. If
you are using the AV profile, select Stereo Audio, and then click Set Default.
5. Click OK.

Performance problems
This section provides solutions to performance-related problems of your computer.

Excessive number of fragmented files
Solution: Use the Windows disk defragmentation or disk optimization feature to clean up the files.
Note: Depending on the volume of the storage drives and amount of data stored on the storage drives, the
disk-defragmentation process might take up to several hours.
1. Close any open programs and windows.
2. Click the Start button to open the Start menu.
3. Depending on your Windows version, do one of the following:
• For Windows 7: Click Computer.
• For Windows 10: Click File Explorer ➙ This PC.
4. Right-click your C drive and then click Properties.
5. Click the Tools tab.
6. Depending on your Windows version, do one of the following:
• For Windows 7: Click Defragment now.
• For Windows 10: Click Optimize. Select the desired drive, and then click Optimize.
7. Follow the instructions on the screen.

Insufficient free storage drive space
Solutions: Free up storage drive space.
• Clean out your Inbox, Sent Items, and Deleted Items folders from your e-mail application.
• Clean up your C drive.
1. Click the Start button to open the Start menu.
2. Depending on your Windows version, do one of the following:
– For Windows 7: Click Computer.
– For Windows 10: Click File Explorer ➙ This PC.
3. Right-click your C drive and then click Properties.
4. Check the amount of free space, and then click Disk Cleanup.
5. A list of unnecessary file categories is displayed. Select each file category you want to delete,
and then click OK.
• Turn some Windows features off or remove some unnecessary programs.
1. Depending on your Windows version, do one of the following:
– For Windows 7: Click the Start button to open the Start menu.
– For Windows 10: Right-click the Start button to open the Start context menu.

Chapter 7. Troubleshooting, diagnostics, and recovery

2. Click Control Panel. View Control Panel using Large icons or Small icons, and then click Programs
and Features.
3. Do one of the following:
– To turn some Windows features off, click Turn Windows features on or off. Follow the
instructions on the screen.
– To remove some unnecessary programs, select the program you want to remove, and then click
Uninstall/Change or Uninstall.

Insufficient free memory space
Solutions:
• Right-click a blank area on the taskbar and open Task Manager. Then, end some tasks you are not
performing.
• Install additional memory modules. See Chapter 9 “Installing or replacing hardware” on page 87. To
purchase memory modules, go to
http://www.lenovo.com.

Serial connector cannot be accessed
Solutions:
• Connect the serial cable to the serial connector on the computer and to the serial device. If the serial
device has its own power cord, connect the power cord to a grounded electrical outlet.
• Turn on the serial device and keep the device online.
• Install any application programs supplied with the serial device. Refer to the documentation that comes
with the serial device for more information.
• If you added one serial-connector adapter, install the adapter correctly.

USB device problems
This section provides solutions to USB device-related problems.

My USB device cannot be accessed
Solutions:
• Connect the USB cable from the USB connector to the USB device. If the USB device has its own power
cord, connect the power cord to a grounded electrical outlet.
• Turn on the USB device and keep the device online.
• Install any device drivers or application programs supplied with the USB device. Refer to the
documentation that comes with the USB device for more information.
• Detach and reconnect the USB connector to reset the USB device.

I cannot install the Windows 7 operating system using an external USB device
Solution: Go to http://www.lenovo.com/support to download and install USB drivers.

Software and driver problems
This section provides solutions to software- and driver-related problems.

For some programs, dates cannot be sorted in correct order
Solution: Some programs developed before the year 2000 use only the last two digits of a year to sort dates,
assuming the first two digits are 19. Consequently, dates cannot be sorted in correct order nowadays.
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Check with your software manufacturer to see if any updates are available. Many software manufacturers
make updates available from the World Wide Web.

Some application programs do not work as expected
Solutions:
1. Check whether the problem is caused by an application program.
a. Ensure that the software is compatible with your computer. Refer to the information supplied with
the software for more information.
b. Verify that other software works correctly on your computer.
c. Verify that the software you are using works on another computer.
2. If the problem is caused by an application program:
• Refer to the printed documentation that comes with the program or the help system of the program.
• Update the program. See “Keeping your computer current” on page 52.
• Uninstall the program and then reinstall it. To download a program that is preinstalled on your
computer, go to http://www.lenovo.com/support and follow the instructions on the screen.

A device does not work normally due to device driver problems
Solution: Update the device driver. See “Keeping your computer current” on page 52.

Diagnostics
Note: If you are using a Windows operating system other than Windows 7 or Windows 10, go to
http://www.lenovo.com/diags for the diagnostics information for your computer.
The diagnostic program is used to test hardware components of your computer. The diagnostic program also
can report operating-system-controlled settings that interfere with the correct operation of your computer.

Lenovo Solution Center
The Lenovo Solution Center program is the diagnostic program preinstalled on your computer. The program
enables you to troubleshoot and resolve computer problems. It combines diagnostic tests, system
information collection, security status, and support information, along with hints and tips for maximum
system performance.
To open the Lenovo Solution Center program, see “Accessing a program on your computer” on page 39. For
more information about using the program, refer to the help system of the program.
If you are unable to isolate and repair the problem yourself after running Lenovo Solution Center, save
and print the log files created by the program. You might need the log files when you speak to a Lenovo
technical support representative.

UEFI diagnostic program
The UEFI diagnostic program enables you to test hardware devices (such as memory modules or storage
drives) and provides the following tools:
• System information
• Recover bad sectors tool
• Generate configuration file
• Execute from configuration file

Chapter 7. Troubleshooting, diagnostics, and recovery

To use the UEFI diagnostic program, do the following:
1. Turn on or restart your computer.
2. Before Windows starts, repeatedly press and release the F10 key until the UEFI diagnostic program
opens.
Note: If a BIOS password has been set, the Setup Utility program will not open until you enter the
correct password. For more information, see “Using BIOS passwords” on page 64.
3. Follow the instructions on the screen to use the diagnostic program.

Recovery information
This section provides instructions about how to recover your operating system.
Note: If a device does not work normally after recovering the operating system, update the device driver.
See “Keeping your computer current” on page 52.

Recovery information for Windows 7
To recover your Windows 7 operating system, use the following solutions:
• Use Windows recovery solutions.
– Use System Restore to restore system files and settings to an earlier point.
1. Click the Start button to open the Start menu.
2. Click Control Panel. View Control Panel using Large icons or Small icons, and then click
Recovery ➙ Open System Restore.
3. Follow the instructions on the screen.
– Use the Windows recovery environment by doing one of the following:
– After several consecutive failed boot attempts, the Windows recovery environment might start
automatically. Follow the instructions on the screen to choose the appropriate recovery solution.
– Turn on or restart your computer. Then, repeatedly press and release the F8 key until the Advanced
Boot Options window opens. Select Repair Your Computer, press Enter, and follow the instructions
on the screen to choose the appropriate recovery solution.
Note: For some keyboards, you might need to press Fn+F8 to open the Advanced Boot Options
window.
• Use the Rescue and Recovery program to restore the storage drive from a backup, or restore the C
drive to the factory-default settings.
Notes:
– Depending on your computer model, the Rescue and Recovery program might not be available unless
you installed it manually earlier.
– If you use the Rescue and Recovery program to restore the storage drive from a backup, ensure that
you backed up your data earlier with the program.
To use the Rescue and Recovery program, do one of the following:
– Open the Rescue and Recovery program. See “Accessing a program on your computer” on page 39.
For more information about using the program, refer to the help system of the program.
– Open the Rescue and Recovery workspace.
1. Turn off your computer. Press and hold the Enter key and then turn on the computer. Release
the Enter key when Startup Interrupt Menu is displayed. Then, press F11 to open the Rescue
and Recovery workspace.
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2. If the Rescue and Recovery workspace fails to open, use the rescue medium you created earlier to
resolve the problem. Select the rescue medium as the startup device. See “Selecting a temporary
startup device” on page 65. When the rescue medium starts, the Rescue and Recovery workspace
opens. Follow the instructions on the screen.
• Use the recovery medium you created earlier with the Create Recovery Media program to restore only
the C drive or the entire storage drive to the factory-default settings.
Note: To create a recovery medium, see “Good maintenance practices” on page 52.
1. Select the recovery medium as the startup device. See “Selecting a temporary startup device”
on page 65.
2. Follow the instructions on the screen to choose the appropriate recovery solution.
• Use the recovery disc set provided by Lenovo to restore the entire storage drive to the factory-default
settings.
– If your computer comes with the recovery disc set, follow the instructions shipped with the disc set.
– If your computer does not come with the recovery disc set, contact the Lenovo Customer Support
Center to order a recovery disc set. See “Calling for service” on page 136.

Recovery information for Windows 10
To recover your Windows 10 operating system, use the following solutions:
• Use Windows recovery solutions.
– Use recovery solutions in Windows Settings.
1. Click the Start button to open the Start menu.
2. Click Settings ➙ Update & security ➙ Recovery.
3. Choose the appropriate recovery solution by following the instructions on the screen.
– Use System Restore to restore system files and settings to an earlier point.
1. Right-click the Start button to open the Start context menu.
2. Click Control Panel. View Control Panel using Large icons or Small icons, and then click
Recovery ➙ Open System Restore.
3. Follow the instructions on the screen.
– Use the File History tool to restore your files from a backup.
Note: If you use the File History tool to restore your files from a backup, ensure that you backed up
your data earlier with the tool.
1. Right-click the Start button to open the Start context menu.
2. Click Control Panel. View Control Panel using Large icons or Small icons, and then click File
History ➙ Restore personal files.
3. Follow the instructions on the screen.
– Use the Windows recovery environment by doing one of the following:
– After several consecutive failed boot attempts, the Windows recovery environment might start
automatically. Follow the instructions on the screen to choose the appropriate recovery solution.
– Select the recovery medium you created earlier with the Windows tool as the startup device. See
“Selecting a temporary startup device” on page 65. Then, follow the instructions on the screen
to choose the appropriate recovery solution.
Note: To create a recovery medium, see “Good maintenance practices” on page 52.

Chapter 7. Troubleshooting, diagnostics, and recovery

• Use the recovery USB key provided by Lenovo to restore the entire storage drive to the factory-default
settings.
– If your computer comes with the recovery USB key, follow the instructions shipped with the USB key.
– If your computer does not come with the recovery USB key, contact the Lenovo Customer Support
Center to order a recovery USB key. See “Calling for service” on page 136.

ThinkCentre M800 and M900 Hardware Maintenance Manual

Chapter 8. Service checkout and symptom-to-FRU index
This chapter provides information about general service checkout and symptom-to-FRU index.

Service checkout
Attention: The drives in the computer you are servicing might have been rearranged or the drive startup
sequence changed. Be extremely careful during write operations such as copying, saving, or formatting.
Data or programs can be overwritten if you select an incorrect drive.
General error messages appear if a problem or conflict is found by an application program, the operating
system, or both. For an explanation of these messages, refer to the information supplied with that software
package.
Before replacing any FRUs, ensure that the latest level of BIOS is installed on the system. A down-level BIOS
might cause false errors and unnecessary replacement of the system board.
Use the following procedure to help determine the cause of the problem:
1. Power-off the computer and all external devices.
2. Check all cables and power cords.
3. Set all display controls to the middle position.
4. Power-on all external devices.
5. Power-on the computer.
• Look for displayed error codes
• Listen for beep codes
• Look for readable instructions or a main menu on the display.
If you did not receive the correct response, go to step 6.
If you do receive the correct response, go to step 7.
6. Look at the following conditions and follow the instructions:
• If you hear beep codes during POST, go to “Beep symptoms” on page 83.
• If the computer displays a POST error, go to “POST error codes” on page 83.
• If the computer hangs and no error is displayed, go to step 7.
7. Run the Diagnostic programs. See “Diagnostics” on page 77.
• If you receive an error, replace the part that the diagnostic program calls out.
• If the test stops and you cannot continue, replace the last device tested.

Problem determination tips
Due to the variety of hardware and software combinations that can be encountered, use the following
information to assist you in problem determination. If possible, have this information available when
requesting assistance from Service Support and Engineering functions.
• Machine type and model
• Processor or hard disk drive upgrades
• Failure symptom
– Do diagnostics indicate a failure?
– What, when, where, single, or multiple systems?

– Is the failure repeatable?
– Has this configuration ever worked?
– If it has been working, what changes were made prior to it failing?
– Is this the original reported failure?
• Diagnostics version
– Type and version level
• Hardware configuration
– Print (print screen) configuration currently in use
– BIOS level
• Operating system software
– Type and version level
Notes: To eliminate confusion, identical systems are considered identical only if they:
1. Are the exact machine type and models
2. Have the same BIOS level
3. Have the same adapters/attachments in the same locations
4. Have the same address jumpers/terminators/cabling
5. Have the same software versions and levels
6. Have the same Diagnostic Diskettes (version)
7. Have the same configuration options set in the system
8. Have the same setup for the operating system control files
Comparing the configuration and software set-up between “working and non-working” systems will often
lead to problem resolution.

Symptom-to-FRU index
The Symptom-to-FRU index lists error symptoms and possible causes. The most likely cause is listed first.
Always begin with “Service checkout” on page 81. This index can also be used to help you decide which
FRUs to have available when servicing a computer. If you are unable to correct the problem using this
index, go to “Undetermined problems” on page 86.
Notes:
• The Symptom-to-FRU index is not specific to any machine type and are applicable to all Lenovo computers.
• If you have both an error message and an incorrect audio response, diagnose the error message first.
• If you cannot run the diagnostic tests or get a diagnostic error code when running a test, first diagnose the POST
error message you receive.
• If you did not receive any error message, look for a description of your error symptoms in the first part of this index.

Hard disk drive boot error
A hard disk drive boot error can have the following causes.
Error

FRU/Action

The start-up drive is not in the boot sequence in
configuration.

Check the configuration and ensure the start-up drive is
in the boot sequence.

No operating system installed on the boot drive.

Install an operating system on the boot drive.

ThinkCentre M800 and M900 Hardware Maintenance Manual

Error

FRU/Action

The boot sector on the startup drive is corrupted.

The drive must be formatted. Do the following:
1. Attempt to back up the data on the failing hard disk
drive.
2. Using the operating system programs, format the
hard disk drive.

The drive is defective.

Replace the hard disk drive.

Power supply problems
If you suspect a power problem, use the following procedures.
Check/Verify

FRU/Action

Check the following for proper installation.

Reseat connectors

• Power cord
• On/Off switch connector
• On/Off switch power supply connector
• System board power supply connectors
• Microprocessor(s) connection
Check the power cord for continuity.

Power cord

Check the power-on switch for continuity.

Power-on switch

Beep symptoms
Beep symptoms are tones or a series of tones separated by pauses (intervals without sound) during POST.
The following table describes the beep symptoms.
Beep symptom

FRU/Action

2 short beeps CMOS setting error

Common error code, see the detail failure information in
“POST error codes” on page 83.

3 short and 1 long beeps DRAM memory error

Perform the following actions in order.
1. Make sure the memory module(s) are properly seated
in the connector(s).
2. Replace the memory module(s).
3. Replace the system board.

POST error codes
Each time you power-on the system, it performs a series of tests that check the operation of the system
and some options. This series of tests is called the Power-On Self-Test, or POST. POST does the following
operations.
• Checks some basic system-board operations
• Checks the memory operation
• Starts the video operation
• Verifies that the boot drive is working

Chapter 8. Service checkout and symptom-to-FRU index

If the POST detects a problem, an error message appears on the screen. A single problem can cause several
error messages to appear. When you correct the cause of the first error message, the other error messages
probably will not be displayed next time you turn on the system.
Error code

POST error message

Description/Action

0135

Fan failure

The system might be overheating.
Press F10 to exit.
Note: If the problem is caused by the
microprocessor fan, press F10 will
not solve the problem.

0211

Keyboard not found

When there is no keyboard detected,
the error message will be displayed.

0164

Memory size decreased

Press F10 to exit.

1762

Configuration change has occurred

This error message is displayed when
a hard disk drive or optical drive
change has been made.
Press F10 to exit.

1820

More than one external fingerprint
reader are attached. Power off and
remove all but the reader that you set
up within your main operating system.

If more than one external fingerprint
reader are connected to a computer,
this error message will be displayed.
Remove all of the fingerprint
keyboards except the one compatible
with the fingerprint application on
your computer.

1962

No operating system found. Press
any key to repeat boot sequence.

This error occurs only after the POST
is completed.
Press any key to repeat boot
sequence.

Miscellaneous error conditions
Message/Symptom

FRU/Action

Changing display colors

Display/Monitor

Computer will not power-off. See “Hard disk drive boot
error” on page 82.

1. Power Switch
2. System Board
3. Riser card, if installed.

Computer will not RPL from server

1. Ensure that network is in startup sequence as first
device or first device after diskette.
2. Ensure that network adapter is enabled for RPL.
3. Network adapter (Advise network administrator of
new MAC address)

ThinkCentre M800 and M900 Hardware Maintenance Manual

Message/Symptom
Computer will not perform a Wake On

FRU/Action
LAN®

(if applicable)

1. Check power supply and signal cable connections
to network adapter.
2. Ensure that the operating system settings are set to
enable Wake on LAN.
3. Ensure Wake On LAN feature is enabled in
Setup/Configuration (see “Starting the Setup Utility
program” on page 61)
4. Ensure network administrator is using correct MAC
address.
5. Ensure no interrupt or I/O address conflicts.
6. Network adapter (advise network administrator of
new MAC address)

Dead computer. See “Hard disk drive boot error” on page
82.

1. Power Supply

Diskette drive in-use light remains on or does not light
when drive is active.

1. Diskette Drive

2. System Board
2. System Board
3. Diskette Drive Cable

Blank screen except for flashing cursor.

1. System Board
2. Primary Hard Disk Drive
3. Hard Disk Drive Cable

Incorrect memory size during POST

1. Run the Memory tests.
2. Memory Module
3. System Board

"Insert a Diskette" icon appears with a known-good
diagnostics diskette in the first 3.5-inch diskette drive.

1. System Board
2. Diskette Drive Cable
3. Network Adapter

Intensity or color varies from left to right of characters
and color bars

1. Display
2. Video adapter (if present)
3. System Board

No power or fan not running

1. See “Hard disk drive boot error” on page 82.

Non-system disk or disk error-type message with a
known-good diagnostic diskette.

1. Diskette Drive
2. System Board
3. Diskette Drive Cable

Other display symptoms not listed above (including blank
or illegible display)

1. Display

Power-on indicator or hard disk drive in-use light not on,
but computer works correctly

1. Power switch/LED assembly

Printer problems

1. Printer

2. System Board

2. System Board
2. System Board

Chapter 8. Service checkout and symptom-to-FRU index

Message/Symptom
Program loads from the hard disk with a known-good
diagnostics diskette in the first 3.5-inch diskette drive

FRU/Action
1. Run the Setup Utility program and check Startup
sequence.
2. Diskette Drive
3. Diskette Drive Cable
4. System Board
5. Power Supply

RPL computer cannot access programs from its own hard
disk.

1. If network administrator is using LCCM Hybrid RPL,
check startup sequence:
a. First device - network
b. Second device - hard disk
2. Hard disk drive

RPL computer does not RPL from server

1. Check startup sequence.
2. Check the network adapter LED status.

Serial or parallel connector device failure (system board
connector)

1. External Device Self-Test OK?
2. External Device
3. Cable
4. System Board

Serial or parallel connector device failure (adapter
connector)

1. External Device Self-Test OK?
2. External Device
3. Cable
4. Alternate Adapter
5. System Board

Some or all keys on the keyboard do not work

1. Keyboard
2. Keyboard Cable
3. System Board

Undetermined problems
This section provides instructions on how to find out the failing devices or adapters.
1. Power-off the computer.
2. Remove or disconnect the following components (if installed) one at a time.
a. External devices (modem, printer, or mouse)
b. Any adapters
c. Memory modules
d. Extended video memory
e. External Cache
f. External Cache RAM
g. Hard disk drive
h. Diskette drive
3. Power-on the computer to re-test the system.
4. Repeat steps 1 through 3 until you find the failing device or adapter.
If all devices and adapters have been removed, and the problem continues, replace the system board.
See “Replacing the system board” on page 127.

ThinkCentre M800 and M900 Hardware Maintenance Manual

Chapter 9. Installing or replacing hardware
This chapter contains the following topics:
•

“Handling static-sensitive devices” on page 87

•

“Installing or replacing hardware” on page 87

Handling static-sensitive devices
Do not open the static-protective package containing the new part until the defective part has been removed
and you are ready to install the new part. Static electricity, although harmless to you, can seriously damage
computer components and parts.
When you handle parts and other computer components, take these precautions to avoid static-electricity
damage:
• Limit your movement. Movement can cause static electricity to build up around you.
• Always handle parts and other computer components carefully. Handle PCI/PCI-Express cards, memory
modules, system boards, and microprocessors by the edges. Never touch any exposed circuitry.
• Prevent others from touching the parts and other computer components.
• Touch the static-protective package containing the part to a metal expansion-slot cover or other
unpainted metal surface on the computer for at least two seconds. This reduces static electricity from
the package and your body before you install or replace a new part.
• When possible, remove the new part from the static-protective package, and install it directly in the
computer without setting the part down. When this is not possible, place the static-protective package
that the part came in on a smooth, level surface and place the part on the package.
• Do not place the part on the computer cover or other metal surface.

Installing or replacing hardware
This section provides instructions on how to install or replace hardware for your computer. You can expand
the capabilities of your computer and maintain your computer by installing or replacing hardware.
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
Notes:
• Depending on your computer model, some of the hardware parts in this section might not be available.
• Use computer parts provided only by Lenovo.
• When installing or replacing an option, use the appropriate instructions in this section along with the
instructions that come with the option.
• In most areas of the world, Lenovo requires the return of the defective CRU. Information about this will
come with the CRU or will come a few days after the CRU arrives.

Installing external options
You can connect external options to your computer, such as external speakers, a printer, or a scanner. For
some external options, you must install additional software in addition to making the physical connection.
When installing an external option, see “Hardware locations” on page 27 to identify the required connector.

Use the instructions shipped with the option to help you make the connection and install any software
or device drivers that are required for the option.

Removing the computer cover
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
CAUTION:
Before you open the computer cover, turn off the computer and wait several minutes until the
computer is cool.
To remove the computer cover, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Unlock any locking device that secures the computer cover.
3. Remove the two screws that secure the computer cover. Then, slide the cover to the rear of the
computer to remove it.

Figure 10. Removing the computer cover

Replacing the front bezel
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.

ThinkCentre M800 and M900 Hardware Maintenance Manual

To replace the front bezel, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Locate the front bezel. See “Computer components” on page 30.
4. Disconnect the cable from the front panel connector in the system board. See “Parts on the system
board” on page 33.
5. If a dust shield is available, pull the dust shield outwards to remove it from the front bezel.

Figure 11. Removing the dust shield

6. Remove the front bezel by releasing the three plastic tabs on the left side and pivoting the front bezel
outward.

Figure 12. Removing the front bezel

Chapter 9. Installing or replacing hardware

7. Align the three plastic tabs on the right side of the new front bezel with the corresponding holes in the
chassis. Then, pivot the front bezel inwards until it snaps into position on the left side.

Figure 13. Installing the front bezel

8. Connect the cable to the front panel connector in the system board. See “Parts on the system board”
on page 33.
9. Reinstall the dust shield if you have removed it. Align the edges of the dust shield with the edges of the
front bezel. Then, press the dust shield inward until it snaps into position.

Figure 14. Installing the dust shield

What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

ThinkCentre M800 and M900 Hardware Maintenance Manual

Replacing the computer handle
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the computer handle, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Remove the front bezel. See “Replacing the front bezel” on page 88.
4. Locate the computer handle. See “Computer components” on page 30.
5. Remove the four screws that secure the computer handle to remove the handle from the computer.

Figure 15. Removing the computer handle

6. Align the screw holes in the new computer handle with the corresponding holes in the computer. Then,
install the four screws to secure the computer handle to the computer.
7. Install the front bezel. See “Replacing the front bezel” on page 88.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Replacing the optical drive
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the optical drive, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Remove the front bezel. See “Replacing the front bezel” on page 88.
4. Locate the optical drive. See “Computer components” on page 30.
5. Disconnect the signal cable and the power cable from the rear of the optical drive. See “Parts on the
system board” on page 33.

Chapter 9. Installing or replacing hardware

6. Press the blue release button and slide the optical drive to the front of the computer.

Figure 16. Removing the optical drive

7. Install the optical drive retainer on the side of the new optical drive.

Figure 17. Installing the optical drive retainer

8. Slide the new optical drive into the drive bay from the front of the computer until the optical drive
snaps into position.

Figure 18. Installing the optical drive

9. Connect the signal cable and the power cable to the new optical drive.
10. Install the front bezel. See “Replacing the front bezel” on page 88.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

ThinkCentre M800 and M900 Hardware Maintenance Manual

Replacing the storage drive
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the storage drive, refer to one of the following topics:
•

“Replacing the 2.5-inch storage drive in the primary or secondary storage drive bay” on page 93

•

“Replacing the 3.5-inch storage drive in the primary or secondary storage drive bay” on page 95

•

“Replacing the 3.5-inch storage drive in the front-access storage enclosure” on page 97

Replacing the 2.5-inch storage drive in the primary or secondary storage drive bay
To replace the 2.5-inch storage drive in the primary or secondary storage drive bay, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Locate the 2.5-inch storage drive you want to replace. See “Computer components” on page 30.
4. Disconnect the signal cable and the power cable from the 2.5-inch storage drive.
5. Slide out the 3.5-inch storage drive bracket to remove it from the computer.

Figure 19. Removing the 3.5-inch storage drive bracket

6. Flex the sides of the blue bracket to remove the 2.5-inch storage converter from the 3.5-inch storage
drive bracket.

Chapter 9. Installing or replacing hardware

7. Remove the four screws that secure the 2.5-inch storage drive to the storage converter. Then, lift up the
2.5-inch storage drive to remove it from the converter.

Figure 20. Removing the 2.5-inch storage drive from the storage converter

8. Take the new 2.5-inch storage drive out of the static-protective package.
9. Position the 2.5-inch storage drive in the storage converter so that the holes in the drive are aligned
with the corresponding holes in the converter. Then, install the four screws to secure the 2.5-inch
storage drive to the converter.

Figure 21. Installing the 2.5-inch storage drive into the storage converter

ThinkCentre M800 and M900 Hardware Maintenance Manual

10. Flex the bracket and insert the pins 1 – 4 on the 3.5-inch storage bracket into the holes in the storage
converter. Do not touch the circuit board on the bottom of the 2.5-inch storage drive.

Figure 22. Installing the 2.5-inch storage converter into the 3.5-inch storage drive bracket

11. Slide the 3.5-inch storage drive bracket into the storage drive bay until it snaps into position.
Note: Ensure that you install the primary storage drive before installing the secondary storage drive.
See “Computer components” on page 30.

Figure 23. Installing the 3.5-inch storage drive bracket

12. Connect the signal cable and the power cable to the new 2.5-inch storage drive.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Replacing the 3.5-inch storage drive in the primary or secondary storage drive bay
To replace the 3.5-inch storage drive in the primary or secondary storage drive bay, do the following:

Chapter 9. Installing or replacing hardware

1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Locate the 3.5-inch storage drive you want to replace. See “Computer components” on page 30.
4. Disconnect the signal cable and the power cable from the 3.5-inch storage drive.
5. Slide out the 3.5-inch storage drive bracket to remove it from the computer.

Figure 24. Removing the 3.5-inch storage drive bracket

6. Flex the sides of the blue bracket to remove the 3.5-inch storage drive from the bracket.
7. Take the new 3.5-inch storage drive out of the static-protective package.
8. Flex the bracket and insert the pins 1 – 4 on the bracket into the holes in the new 3.5-inch storage drive.
Do not touch the circuit board 5 on the bottom of the 3.5-inch storage drive.

Figure 25. Installing the 3.5-inch storage drive into the bracket

ThinkCentre M800 and M900 Hardware Maintenance Manual

9. Slide the 3.5-inch storage drive bracket into the storage drive bay until it snaps into position.
Note: Ensure that you install the primary storage drive before installing the secondary storage drive.
See “Computer components” on page 30.

Figure 26. Installing the 3.5-inch storage drive bracket

10. Connect the signal cable and the power cable to the new 3.5-inch storage drive.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Replacing the 3.5-inch storage drive in the front-access storage enclosure
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
Notes: You can perform a hot swap on the 3.5-inch storage drive installed here. To do a hot swap is to
connect, remove, or reconnect a device while the computer is operating. Before performing a hot swap, you
are recommended to do the following for data security:
1. Click the triangular icon on the taskbar to show hidden icons.
2. Click the Safely Remove Hardware and Eject Media icon to stop the device.
3. Proceed with the following instructions to replace the storage drive.
To replace the 3.5-inch storage drive in the front-access storage enclosure, do the following:
1. Locate the front-access storage enclosure. See “Computer components” on page 30.
2. Unlock the front-access storage enclosure if available.
3. Press the triangular icon 1 in the bezel of the front-access storage enclosure. Then, the bezel folds
down.

Chapter 9. Installing or replacing hardware

Figure 27. Opening the front-access storage enclosure

4. Press the circular icon in the bezel of the 3.5-inch storage drive bracket as shown. Then, grasp the bezel
to slide the 3.5-inch storage drive bracket out of the front-access storage enclosure.

Figure 28. Removing the 3.5-inch storage drive bracket

5. Flex the sides of the blue bracket to remove the 3.5-inch storage drive from the bracket.

Figure 29. Removing the 3.5-inch storage drive from the bracket

6. Flex the bracket and insert the four pins on the bracket into the corresponding holes in the new 3.5-inch
storage drive. Do not touch the circuit board on the bottom of the 3.5-inch storage drive.

ThinkCentre M800 and M900 Hardware Maintenance Manual

Figure 30. Installing the 3.5-inch storage drive into the bracket

7. Slide the 3.5-inch storage drive bracket into the front-access storage enclosure until it snaps into
position.

Figure 31. Installing the 3.5-inch storage drive bracket into the front-access storage enclosure

8. Press the triangular icon in the bezel of the front-access storage enclosure again to secure the storage
drive bracket.

Chapter 9. Installing or replacing hardware

Figure 32. Securing the 3.5-inch storage drive bracket

9. Lock the front-access storage enclosure if you have unlocked it.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Replacing the USB assembly
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the USB assembly, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Remove the front bezel. See “Replacing the front bezel” on page 88.
4. Locate the USB assembly. See “Computer components” on page 30.
5. Disconnect the card reader and USB assembly cables from the front USB connectors in the system
board. See “Parts on the system board” on page 33.
6. Press the blue release button and slide the card reader and USB assembly bracket to the front of the
computer.

Figure 33. Removing the card reader and USB assembly bracket

7. Remove the two screws that secure the USB assembly to the bracket. Then, lift the USB assembly to
remove it from the bracket.
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Figure 34. Removing the USB assembly

8. Align the screw holes in the new USB assembly with the holes in the bracket. Then, install the two
screws to secure the USB assembly to the bracket.

Figure 35. Installing the USB assembly

9. Slide the card reader and USB assembly bracket into the drive bay from the front of the computer
until the bracket snaps into position.

Figure 36. Installing the card reader and USB assembly bracket
Chapter 9. Installing or replacing hardware

101

10. Connect the card reader and USB assembly cables to the front USB connectors in the system board.
See “Parts on the system board” on page 33.
11. Install the front bezel. See “Replacing the front bezel” on page 88.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Replacing the card reader
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the card reader, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Remove the front bezel. See “Replacing the front bezel” on page 88.
4. Locate the card reader. See “Computer components” on page 30.
5. Disconnect the card reader and USB assembly cables from the front USB connectors in the system
board. See “Parts on the system board” on page 33.
6. Press the blue release button and slide the card reader and USB assembly bracket to the front of the
computer.

Figure 37. Removing the card reader and USB assembly bracket

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7. Remove the two screws that secure the card reader to the bracket. Then, lift the card reader to
remove it from the bracket.

Figure 38. Removing the card reader

8. Align the screw holes in the new card reader with the holes in the bracket. Then, install the two screws
to secure the card reader to the bracket.

Figure 39. Installing the card reader

Chapter 9. Installing or replacing hardware

103

9. Slide the card reader and USB assembly bracket into the drive bay from the front of the computer
until the bracket snaps into position.

Figure 40. Installing the card reader and USB assembly bracket

Replacing the front-access storage enclosure
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the front-access storage enclosure, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Remove the front bezel. See “Replacing the front bezel” on page 88.
4. Locate the front-access storage enclosure. See “Computer components” on page 30.
5. Remove the 3.5-inch storage drive in the front-access storage enclosure. See “Replacing the 3.5-inch
storage drive in the front-access storage enclosure” on page 97.

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6. Press the blue release button and slide the front-access storage enclosure to the front of the computer.

Figure 41. Removing the front-access storage enclosure

7. Install the 3.5-inch storage drive into the front-access storage enclosure. See “Replacing the 3.5-inch
storage drive in the front-access storage enclosure” on page 97.
8. Slide the new front-access storage enclosure into the drive bay from the front of the computer until the
enclosure snaps into position.

Figure 42. Installing the front-access storage enclosure

9. Install the front bezel. See “Replacing the front bezel” on page 88.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Replacing the front audio and USB assembly
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the front audio and USB assembly, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Remove the front bezel. See “Replacing the front bezel” on page 88.

Chapter 9. Installing or replacing hardware

105

4. Locate the front audio and USB assembly. See “Computer components” on page 30.
5. Disconnect the front audio and USB assembly cables from the system board. See “Parts on the
system board” on page 33.
Note: Ensure that you note the locations of the cables when you disconnect the cables from the
system board.
6. Remove the screw that secures the front audio and USB assembly to remove the assembly from the
chassis.

Figure 43. Removing the screw that secures the front audio and USB assembly to the chassis

7. Align the screw hole in the new front audio and USB assembly with the corresponding hole in the
chassis. Then, install the screw to secure the assembly to the chassis.
8. Reconnect the front audio and USB assembly cables to the front audio connector and the front USB
connector on the system board. See “Parts on the system board” on page 33.
9. Install the front bezel. See “Replacing the front bezel” on page 88.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Replacing the thermal sensor
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the thermal sensor, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Remove the front bezel. See “Replacing the front bezel” on page 88.
4. Locate the thermal sensor. See “Computer components” on page 30.
5. Disconnect the thermal sensor cable from the thermal sensor connector on the system board. See
“Parts on the system board” on page 33.

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6. On the inner side of the front panel, press the upper retaining clip 1 that secures the plastic holder of
the thermal sensor downward and then push the clip outward to release the clip. Then, disengage the
plastic holder holding the thermal sensor from the chassis.

Figure 44. Removing the thermal sensor

7. Pull the entire thermal sensor out of the chassis.
8. Insert the connector and cable of the new thermal sensor into the lower hole 1 in the chassis. Then,
align the two tabs on the plastic holder holding the thermal sensor with the two holes 1 and 2 in the
chassis, and push the plastic holder until it snaps into position.

Figure 45. Installing the thermal sensor

9. Connect the thermal sensor cable to the thermal sensor connector on the system board. See “Parts on
the system board” on page 33.
10. Install the front bezel. See “Replacing the front bezel” on page 88.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Replacing the internal speaker
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the internal speaker, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
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107

2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Locate the internal speaker. See “Computer components” on page 30.
4. Disconnect the internal speaker cable from the internal speaker connector on the system board. See
“Parts on the system board” on page 33.
5. Press the tab 1 on the right side of the internal speaker and slide the internal speaker as shown to
completely remove it from the chassis.

Figure 46. Removing the internal speaker

6. Position the new internal speaker into the four metal clips 1 on the inner side of the front panel. Then,
slide the internal speaker as shown until it snaps into position.

Figure 47. Installing the internal speaker

7. Connect the new internal speaker cable to the internal speaker connector on the system board. See
“Parts on the system board” on page 33.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Replacing a memory module
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
The following table provides information about the memory module installation rules that you should
consider when installing or removing a memory module. The “X” mark indicates the memory slots into which
the memory modules should be installed in different situations. To locate the memory module slots, see
“Parts on the system board” on page 33.

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Quantity

Slot 1

Slot 2

Slot 3

Slot 4

One memory module

Two memory modules

X
X

Three memory modules

Four memory modules

To replace a memory module, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Locate the memory module you want to replace. The memory modules are installed in the memory slots
on the system board. See “Parts on the system board” on page 33.
4. Remove any parts that might prevent your access to the memory module. Depending on your computer
model, you might need to remove the PCI Express x16 graphics card for easier access to the memory
module. See “Replacing a PCI Express card” on page 120.
5. Open the retaining clips and gently pull the memory module out of the memory slot.

Figure 48. Removing a memory module

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6. Position the new memory module over the appropriate memory slot. Ensure that the notch 1 on the
memory module aligns correctly with the slot key 2 on the system board. Push the memory module
straight down into the slot until the retaining clips close.

Figure 49. Installing a memory module

7. Reinstall the PCI Express x16 graphics card if you have removed it. See “Replacing a PCI Express
card” on page 120.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Replacing the PCI card
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the PCI card, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Locate the PCI card. The PCI card is installed in the card slot on the PCI adapter card. See “Computer
components” on page 30.

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4. At the rear of the computer, press the release button 1 to open the card latch 2 .

Figure 50. Opening the PCI card latch

5. Grasp the card that is currently installed and gently pull it off the card slot on the PCI adapter card.

Figure 51. Removing the PCI card

Notes:
• The card fits tightly into the card slot on the PCI adapter card. If necessary, alternate moving each
side of the card a small amount until it is removed from the card slot.

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• If the card is held in place by a retaining latch, press the card retaining latch 1 as shown to disengage
the latch. Grasp the card and gently pull it out of the slot.

6. Install the new PCI card into the card slot on the PCI adapter card. Then, pivot the card latch to the
closed position to secure the PCI card.
Note: Ensure that the metal tab 1 is in the closed position as shown before you install the new PCI
card into the card slot on the adapter.

Figure 52. Installing the PCI card

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What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Replacing the PCI adapter card
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the PCI adapter card, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Remove the PCI card. See “Replacing the PCI card” on page 110.
4. Locate the PCI adapter card. The PCI adapter card is installed in the M.2 card slot on the system board.
See “Parts on the system board” on page 33.
5. Remove the three screws that secure the PCI adapter card to the system board. Then, slide the adapter
card as shown to remove it from the system board.

Figure 53. Removing the PCI adapter card

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6. Slide the new PCI adapter card into the M.2 card slot as shown until it snaps into position. Then, install
the three screws to secure the PCI adapter card.

Figure 54. Installing a PCI adapter card

7. Install the PCI card. See “Replacing the PCI card” on page 110.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Replacing the Wi-Fi card
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the Wi-Fi card, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. If your computer comes with a Wi-Fi card module that supports the Bluetooth function, disconnect
the Bluetooth cable from the Wi-Fi adapter card.
Note: The Bluetooth cable connects the Bluetooth connector on the Wi-Fi adapter card to the front
USB connector on the system board.

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4. Rotate the card latch to the open position. Grasp the Wi-Fi adapter card that is currently installed and
gently pull it out of the slot.
Note: The card fits tightly into the card slot. If necessary, alternate moving each side of the card a
small amount until it is removed from the card slot.

Figure 55. Removing the Wi-Fi adapter card

5. Disconnect the front and rear Wi-Fi antenna cables from the Wi-Fi card.

Figure 56. Removing the Wi-Fi antenna cables

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6. Remove the two screws that secure the Wi-Fi card.

Figure 57. Removing the screws that secure the Wi-Fi card

7. Pull the Wi-Fi card out of the mini PCI Express slot.

Figure 58. Removing the Wi-Fi card

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8. Insert the new Wi-Fi card into the mini PCI Express slot.

Figure 59. Installing the Wi-Fi card

9. Install the two screws to secure the new Wi-Fi card to the Wi-Fi adapter card.

Figure 60. Installing the screws to secure the Wi-Fi card

10. Connect the front and rear Wi-Fi antenna cables to the new Wi-Fi card.

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11. Install the Wi-Fi adapter card into the PCI Express x1 slot on the system board. See “Parts on the
system board” on page 33. Then, close the card latch to secure the Wi-Fi adapter card.

Figure 61. Installing the Wi-Fi card

What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Replacing the Wi-Fi antenna
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the Wi-Fi antenna, refer to either of the following:
•

“Replacing the front Wi-Fi antenna” on page 118

•

“Replacing the rear Wi-Fi antenna” on page 119

Replacing the front Wi-Fi antenna
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the front Wi-Fi antenna, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Remove the front bezel. See “Replacing the front bezel” on page 88.

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4. Locate the front Wi-Fi antenna. See “Computer components” on page 30.
5. Disconnect the front Wi-Fi antenna cable from the Wi-Fi card.
6. Remove the front Wi-Fi antenna and cable from the front of the computer.

Figure 62. Removing the front Wi-Fi antenna

7. Stick the new front Wi-Fi cable to the front of the computer. Then, install the front Wi-Fi antenna through
the hole in the computer.
8. Connect the front Wi-Fi antenna cable to the Wi-Fi card.
9. Install the front bezel. See “Replacing the front bezel” on page 88.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Replacing the rear Wi-Fi antenna
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the rear Wi-Fi antenna, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Straighten the rear Wi-Fi antenna so that it can be more easily twisted.

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4. Hold the thicker end of the rear Wi-Fi antenna and unscrew the Wi-Fi antenna from the rear of the
computer.

Figure 63. Removing the rear Wi-Fi antenna

5. Install the new rear Wi-Fi antenna to the rear Wi-Fi antenna cable connector attached on the rear of
the computer. Then, adjust the angle of the rear antenna to reduce the risk of breaking the antenna
by accident.

Figure 64. Removing the rear Wi-Fi antenna

What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Replacing a PCI Express card
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace a PCI Express card, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Locate the PCI Express card you want to replace. The PCI Express cards are installed in the PCI
Express card slots on the system board. See “Parts on the system board” on page 33.

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4. At the rear of the computer, press the release button 1 to open the card latch 2 .

Figure 65. Opening the PCI Express card latch

5. Grasp the card that is currently installed and gently pull it out of the slot.
Notes:
• The card fits tightly into the card slot. If necessary, alternate moving each side of the card a small
amount until it is removed from the card slot.
• If the card is held in place by a retaining latch, press the card retaining latch 1 as shown to disengage
the latch. Grasp the card and gently pull it out of the slot.

6. Install the new PCI Express card into the appropriate PCI Express card slot on the system board. See
“Parts on the system board” on page 33. Then, pivot the card latch to the closed position to secure
the PCI Express card.
Note: If you are installing a PCI Express x16 graphics card, ensure that the memory slot retaining clips
are closed before you install the graphics card.

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Figure 66. Installing a PCI Express card

What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Replacing the coin-cell battery
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
Your computer has a special type of memory that maintains the date, time, and settings for built-in features,
such as parallel-connector assignments (configuration). A coin-cell battery keeps this information active
when you turn off the computer.
The coin-cell battery normally requires no charging or maintenance throughout its life; however, no coin-cell
battery lasts forever. If the coin-cell battery fails, the date, time, and configuration information (including
passwords) are lost. An error message is displayed when you turn on the computer.
Refer to the “Lithium coin-cell battery notice” in the Safety, Warranty, and Setup Guide for information about
replacing and disposing of the coin-cell battery.
To replace the coin-cell battery, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Locate the coin-cell battery. See “Computer components” on page 30.
4. Remove the coin-cell battery as shown.

Figure 67. Removing the coin-cell battery

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5. Install the new coin-cell battery as shown.

Figure 68. Installing the coin-cell battery

6. Reinstall the computer cover and connect the cables. See “Completing the parts replacement” on
page 133.
7. Turn on the computer and all connected devices.
Note: When the computer is turned on for the first time after replacing the coin-cell battery, an error
message might be displayed. This is normal after replacing the coin-cell battery.
8. Use the Setup Utility program to set the date, time, and any passwords. See “Using the Setup Utility
program” on page 61.

Replacing the heat sink and fan assembly
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
CAUTION:
The heat sink and fan assembly might be very hot. Before you open the computer cover, turn off the
computer and wait several minutes until the computer is cool.
To replace the heat sink and fan assembly, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Lay the computer on its side for easier access to the system board.
4. Locate the heat sink and fan assembly. See “Computer components” on page 30.
5. Disconnect the heat sink and fan assembly cable from the microprocessor fan connector on the system
board. See “Parts on the system board” on page 33.

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6. Follow the following sequence to remove the four screws that secure the heat sink and fan assembly
to the system board:
a. Partially remove screw 1 , then fully remove screw 2 , and then fully remove screw 1 .
b. Partially remove screw 3 , then fully remove screw 4 , and then fully remove screw 3 .
Note: Carefully remove the four screws from the system board to avoid any possible damage to the
system board. The four screws cannot be removed from the heat sink and fan assembly.

Figure 69. Removing the heat sink and fan assembly

7. Lift the failing heat sink and fan assembly off the system board.
Notes:
• You might have to gently twist the heat sink and fan assembly to free it from the microprocessor.
• Do not touch the thermal grease while handling the heat sink and fan assembly.
8. Position the new heat sink and fan assembly on the system board so that the four screws are aligned
with the holes in the system board. Ensure that the heat sink and fan assembly cable faces toward the
microprocessor fan connector on the system board.
9. Follow the following sequence to install the four screws to secure the new heat sink and fan assembly.
Do not over-tighten the screws.
a. Partially tighten screw 1 , then fully tighten screw 2 , and then fully tighten screw 1 .
b. Partially tighten screw 3 , then fully tighten screw 4 , and then fully tighten screw 3 .
10. Connect the heat sink and fan assembly cable to the microprocessor fan connector on the system
board. See “Parts on the system board” on page 33.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

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Replacing the microprocessor
CAUTION:
The heat sink and microprocessor might be very hot. Before you open the computer cover, turn off
the computer and wait several minutes until the computer is cool.
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the microprocessor, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Lay the computer on its side for easier access to the system board.
4. Remove the heat sink and fan assembly. See “Replacing the heat sink and fan assembly” on page 123.
Note: Place the heat sink and fan assembly on its side so that the thermal grease on the bottom of it
does not get in contact with anything.
5. Locate the microprocessor. See “Computer components” on page 30.
6. Lift the small handle 1 and open the retainer 2 to access the microprocessor 3 .

Figure 70. Accessing the microprocessor

7. Lift the microprocessor straight up and out of the microprocessor socket.

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Figure 71. Removing the microprocessor

Notes:
• Your microprocessor and socket might look different from the one illustrated.
• Touch only the edges of the microprocessor. Do not touch the gold contacts on the bottom.
• Do not drop anything onto the microprocessor socket while it is exposed. The socket pins must be
kept as clean as possible.
8. Ensure that the small handle is in the raised position and the microprocessor retainer is fully open.
9. Remove the protective cover that protects the gold contacts of the new microprocessor.
10. Note the orientation of the new microprocessor. Hold the new microprocessor by its edges and align
the notches 1 on it with the tabs 2 in the microprocessor socket. Then, carefully lower the new
microprocessor straight down into the microprocessor socket.
Note: The small triangle 3 on one corner of the new microprocessor is the microprocessor orientation
indicator. The new microprocessor is in the correct orientation when this indicator faces the beveled
corner 4 of the microprocessor socket.

Figure 72. Installing the microprocessor

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11. Close the microprocessor retainer and lock it into position with the small handle to secure the new
microprocessor in the socket.
12. Reinstall the heat sink and fan assembly. See “Replacing the heat sink and fan assembly” on page 123.
13. Reconnect all cables that were disconnected from the system board.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Replacing the system board
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
Note: Each computer has a unique Vital Product Data (VPD) code stored in the nonvolatile memory on
the system board. After you replace the system board, the VPD must be updated. To update the VPD,
see “Updating the BIOS” on page 66.
To replace the system board, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Lay the computer on its side for easier access to the system board.
3. Remove the computer cover. See “Removing the computer cover” on page 88.
4. Remove the memory modules. See “Replacing a memory module” on page 108.
5. Remove the PCI card. See “Replacing the PCI card” on page 110.
6. Remove the PCI adapter card. See “Replacing the PCI adapter card” on page 113.
7. Remove the Wi-Fi card. See “Replacing the Wi-Fi card” on page 114.
8. Remove the PCI Express card. See “Replacing a PCI Express card” on page 120.
9. Remove the heat sink and fan assembly. See “Replacing the heat sink and fan assembly” on page 123.
10. Remove the microprocessor. See “Replacing the microprocessor” on page 125.
11. Record the cable routing and cable connections, and then disconnect all cables from the system board.
See “Parts on the system board” on page 33.

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12. Remove the eight screws that secure the system board, and then carefully lift the system board out of
the chassis.
Note: Carefully handle the system board by its edges.

Figure 73. Removing the eight screws that secure the system board

13. Install the microprocessor onto the new system board. See “Replacing the microprocessor” on page
125.
14. Align the eight screw holes in the new system board with the corresponding holes in the chassis. Then,
install the eight screws to secure the new system board to the chassis.
15. Route all the cables that you disconnected from the system board, and then connect the cables to the
system board. See “Parts on the system board” on page 33.
16. Install the heat sink and fan assembly. See “Replacing the heat sink and fan assembly” on page 123.
17. Install the PCI Express card. See “Replacing a PCI Express card” on page 120.
18. Install the Wi-Fi card. See “Replacing the Wi-Fi card” on page 114.
19. Install the PCI adapter card. See “Replacing the PCI adapter card” on page 113.
20. Install the PCI card. See “Replacing the PCI card” on page 110.
21. Install the memory modules. See “Replacing a memory module” on page 108.
22. Install the computer cover. See “Removing the computer cover” on page 88.
23. Connect the external cables and the power cord to the computer.

Replacing the power supply assembly
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.

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Although there are no moving parts in your computer after the power cord has been disconnected, the
following warnings are required for your safety and proper Underwriters Laboratories (UL) certification.
CAUTION:

Hazardous moving parts. Keep fingers and other body parts away.
CAUTION:
Never remove the cover on a power supply or any part that has the following label attached.

Hazardous voltage, current, and energy levels are present inside any component that has this label
attached. There are no serviceable parts inside these components. If you suspect a problem with
one of these parts, contact a service technician.
To replace the power supply assembly, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Locate the power supply assembly. See “Computer components” on page 30.
4. Disconnect the power supply assembly cables from the system board and all drives. See “Parts on the
system board” on page 33.
5. Release the power supply assembly cables from the cable clips and ties in the chassis.

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6. Lay the computer on its side and remove the four screws at the rear of the chassis that secure the
power supply assembly. Then, slide the power supply assembly to the front of the computer and lift
it out of the chassis.

Figure 74. Removing the screws that secure the power supply assembly

7. Install the new power supply assembly into the chassis so that the screw holes in the power supply
assembly align with those in the chassis.
8. Install the four screws to secure the power supply assembly to the chassis.
9. Reconnect the power supply assembly cables to the system board and each of the drives.
10. Secure the power supply assembly cables with the cable clips and ties in the chassis.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Replacing the cover presence switch
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the cover presence switch, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Locate the cover presence switch. See “Computer components” on page 30.
4. Disconnect the cover presence switch cable from the cover presence switch connectors on the system
board. See “Parts on the system board” on page 33.

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5. Remove the screw that secures the cover presence switch. Then, remove the cover presence switch
from the chassis.

Figure 75. Removing the cover presence switch

6. Align the screw hole in the new cover presence switch with the hole in the chassis. Then, install the
screw to secure the cover presence switch to the chassis.

Figure 76. Installing the cover presence switch

7. Connect the cable of the new cover presence switch to the cover presence connector on the system
board. See “Parts on the system board” on page 33.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Replacing the rear fan assembly
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the rear fan, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Locate the rear fan. See “Computer components” on page 30.
4. Disconnect the rear fan cable from the rear fan connector on the system board. See “Parts on the
system board” on page 33.
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5. The rear fan is attached to the chassis by four rubber mounts. Remove the rear fan by breaking or
cutting the rubber mounts and gently pulling the rear fan out of the chassis.
Note: The new rear fan will have four new rubber mounts attached.

Figure 77. Removing the rear fan

6. Install the new rear fan by aligning the new rubber mounts with the corresponding holes in the chassis
and push the rubber mounts through the holes.
7. Pull on the tips of the rubber mounts until the rear fan is secured in place.

Figure 78. Installing the rear fan

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8. Connect the rear fan cable to the rear fan connector on the system board.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 133.

Completing the parts replacement
After completing the installation or replacement for all parts, reinstall the computer cover and reconnect
cables. Depending on the parts you installed or replaced, you might need to confirm the updated information
in the Setup Utility program. Refer to “Using the Setup Utility program” on page 61.
To reinstall the computer cover and reconnect cables to your computer, do the following:
1. Ensure that all components have been reassembled correctly and that no tools or loose screws are
left inside your computer. See “Computer components” on page 30 for the locations of various
components in your computer..
2. Ensure that the cables are routed correctly before reinstalling the computer cover. Keep cables clear of
the hinges and sides of the computer chassis to avoid interference with reinstalling the computer cover.
3. Position the computer cover on the chassis so that the rail guides on the bottom of the computer cover
engage the rails on the chassis. Then, push the cover to the front of the computer until it snaps into
position and install the two screws to secure it.

Figure 79. Installing the computer cover

4. If a locking device is available, use it to lock the computer. See “Locking your computer” on page 55.

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5. Reconnect the external cables and power cords to the corresponding connectors on the computer.
See “Hardware locations” on page 27.
6. Update your configuration. See “Using the Setup Utility program” on page 61.
7. If a newly installed hardware component does not work normally, update the device driver. See
“Keeping your computer current” on page 52.

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Chapter 10. Getting information, help, and service
This chapter contains the following topics:
•

“Information resources” on page 135

•

“Help and service” on page 136

Information resources
You can use the information in this section to access useful resources relating to your computing needs.

Accessing the user guide in various languages
To access the user guide in various languages, go to:
http://www.lenovo.com/UserManuals

Windows help system
Note: If you use the online help for Windows 7 or the help for Windows 10, ensure that your computer
is connected to the Internet.
The Windows help system provides you with detailed information about using the Windows operating system.
To access the Windows help system, do the following:
1. Click the Start button to open the Start menu.
2. Depending on your Windows version, do one of the following:
• For Windows 7: Click Help and Support. You can choose to use the online or offline help at the
bottom of the screen.
• For Windows 10: Click Get started.

Safety and warranty
The Safety, Warranty, and Setup Guide provided with your computer contains important safety information,
product warranty terms, initial setup procedure, and legal notices. Ensure that you read and understand all
safety information in the Safety, Warranty, and Setup Guide before using your computer.
In addition, read and understand Chapter 1 “Read this first: Important safety information” on page 1 before
using your computer. This preface provides additional safety information that applies to topics and tasks
described in this User Guide.

Lenovo Web site
The Lenovo Web site (http://www.lenovo.com) provides up-to-date information and services to help you buy,
upgrade, and maintain your computer. You also can do the following:
• Shop for desktop and notebook computers, monitors, projectors, upgrades and accessories for your
computer, and special offers.
• Purchase additional services, such as support for hardware, operating systems, application programs,
network setup and configuration, and custom installations.
• Purchase upgrades and extended hardware repair services.
• Access troubleshooting and support information for your computer model and other supported products.

135

• Find a Service Provider located near you.

Lenovo Support Web site
Technical support information is available on the Lenovo Support Web site at:
http://www.lenovo.com/support
This Web site is updated with the latest support information such as the following:
• Drivers and software
• Diagnostic solutions
• Product and service warranty
• Product and parts details
• User guides and manuals
• Knowledge base and frequently asked questions
• Lenovo Support phone numbers

Frequently asked questions
For the answers to frequently asked questions about your computer, go to:
http://www.lenovo.com/support/faq

Help and service
This section provides information about obtaining help and service.

Calling for service
During the warranty period, you can get help and information by telephone through the Customer Support
Center. For the warranty period of your computer, go to http://www.lenovo.com/warranty-status. For a list of
Lenovo Support phone numbers, go to http://www.lenovo.com/support/phone.
Note: Phone numbers are subject to change without notice. If the number for your country or region is not
provided, contact your Lenovo reseller or Lenovo marketing representative.
The following services are available during the warranty period:
• Problem determination - Trained service personnel are available to assist you with determining a
hardware problem and deciding what action is necessary to fix the problem.
• Hardware repair - If the problem is caused by hardware under warranty, trained service personnel are
available to provide the applicable level of service.
• Engineering Change management - There might be changes that are required after a product has
been sold. Lenovo or your reseller will make selected Engineering Changes (ECs) that apply to your
hardware available.
These items are not covered by the warranty:
• Replacement or use of parts not manufactured for or by Lenovo or non-warranted Lenovo parts
• Identification of software problem sources
• Configuration of BIOS as part of an installation or upgrade
• Changes, modifications, or upgrades to device drivers
• Installation and maintenance of network operating systems (NOS)
• Installation and maintenance of application programs
If possible, be at your computer when you call. Have the following information available:
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•
•
•
•
•

Machine type and model
Serial numbers of your hardware products
Description of the problem
Exact wording of any error messages
Hardware and software configuration information

Using other services
You might travel with your computer or relocate it to a country or region where the machine type for your
desktop or notebook computer is sold. In such a situation, your computer might be eligible for International
Warranty Service, which automatically entitles you to obtain warranty service throughout the warranty period.
Service will be performed by service providers authorized to perform warranty service.
Service methods and procedures vary by country, and some services might not be available in all countries.
International Warranty Service is delivered through the method of service (such as depot, carry-in, or
on-site service) that is provided in the servicing country. Service centers in certain countries might not be
able to service all models of a particular machine type. In some countries, fees and restrictions might
apply at the time of service.
To determine whether your computer is eligible for International Warranty Service and to view a list of the
countries or regions where service is available, go to http://www.lenovo.com/support.
For technical assistance with the installation of or questions related to Service Packs for your preinstalled
Microsoft Windows product, go to the Microsoft Product Support Web site at http://support.microsoft.com.
You also can contact the Lenovo Customer Support Center for help. Some fees might apply.

Purchasing additional services
During and after the warranty period, you can purchase additional services. Examples of these additional
services include:
• Support for hardware, operating systems, and application programs
• Network setup and configuration services
• Upgraded or extended hardware repair services
• Custom installation services
Service availability and service name might vary by country or region. For more information about these
services, go to the Lenovo Web site at:
http://www.lenovo.com

Chapter 10. Getting information, help, and service

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Appendix A. Regulatory information
The latest compliance information is available at http://www.lenovo.com/compliance.

Export classification notice
This product is subject to the United States Export Administration Regulations (EAR) and has an Export
Classification Control Number (ECCN) of 5A992.c. It can be re-exported except to any of the embargoed
countries in the EAR E1 country list.

Electronic emissions notices
The following information refers to Lenovo personal computer machine types 10FC, 10FD, 10FV, and 10FW.

Federal Communications Commission Declaration of Conformity
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult an authorized dealer or service representative for help.
Lenovo is not responsible for any radio or television interference caused by using other than specified or
recommended cables and connectors or by unauthorized changes or modifications to this equipment.
Unauthorized changes or modifications could void the user's authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)
this device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Responsible Party:
Lenovo (United States) Incorporated
1009 Think Place - Building One
Morrisville, NC 27560
Phone Number: 919-294-5900

Industry Canada Class B emission compliance statement
CAN ICES-3(B)/NMB-3(B)
European Union - Compliance to the Electromagnetic Compatibility Directive

139

This product is in conformity with the protection requirements of EU Council Directive 2004/108/EC on the
approximation of the laws of the Member States relating to electromagnetic compatibility. Lenovo cannot
accept responsibility for any failure to satisfy the protection requirements resulting from a non-recommended
modification of the product, including the installation of option cards from other manufacturers.
This product has been tested and found to comply with the limits for Class B Information Technology
Equipment according to European Standard EN 55022. The limits for Class B equipment were derived
for typical residential environments to provide reasonable protection against interference with licensed
communication devices.
Lenovo, Einsteinova 21, 851 01 Bratislava, Slovakia

German Class B compliance statement
Deutschsprachiger EU Hinweis:
Hinweis für Geräte der Klasse B EU-Richtlinie zur Elektromagnetischen Verträglichkeit
Dieses Produkt entspricht den Schutzanforderungen der EU-Richtlinie 2004/108/EG (früher 89/336/EWG) zur
Angleichung der Rechtsvorschriften über die elektromagnetische Verträglichkeit in den EU-Mitgliedsstaaten
und hält die Grenzwerte der EN 55022 Klasse B ein.
Um dieses sicherzustellen, sind die Geräte wie in den Handbüchern beschrieben zu installieren und zu
betreiben. Des Weiteren dürfen auch nur von der Lenovo empfohlene Kabel angeschlossen werden.
Lenovo übernimmt keine Verantwortung für die Einhaltung der Schutzanforderungen, wenn das Produkt
ohne Zustimmung der Lenovo verändert bzw. wenn Erweiterungskomponenten von Fremdherstellern ohne
Empfehlung der Lenovo gesteckt/eingebaut werden.
Deutschland:
Einhaltung des Gesetzes über die elektromagnetische Verträglichkeit von Betriebsmitteln
Dieses Produkt entspricht dem „Gesetz über die elektromagnetische Verträglichkeit von Betriebsmitteln“
EMVG (früher „Gesetz über die elektromagnetische Verträglichkeit von Geräten“). Dies ist die Umsetzung der
EU-Richtlinie 2004/108/EG (früher 89/336/EWG) in der Bundesrepublik Deutschland.
Zulassungsbescheinigung laut dem Deutschen Gesetz über die elektromagnetische Verträglichkeit
von Betriebsmitteln, EMVG vom 20. Juli 2007 (früher Gesetz über die elektromagnetische
Verträglichkeit von Geräten), bzw. der EMV EG Richtlinie 2004/108/EC (früher 89/336/EWG), für
Geräte der Klasse B.
Dieses Gerät ist berechtigt, in Übereinstimmung mit dem Deutschen EMVG das EG-Konformitätszeichen
- CE - zu führen. Verantwortlich für die Konformitätserklärung nach Paragraf 5 des EMVG ist die Lenovo
(Deutschland) GmbH, Gropiusplatz 10, D-70563 Stuttgart.
Informationen in Hinsicht EMVG Paragraf 4 Abs. (1) 4:
Das Gerät erfüllt die Schutzanforderungen nach EN 55024 und EN 55022 Klasse B.
Korea Class B compliance statement

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Japan VCCI Class B compliance statement

Japan compliance statement for products which connect to the power mains with rated current
less than or equal to 20 A per phase

Japan notice for ac power cord
The ac power cord shipped with your product can be used only for this specific product. Do not use the ac
power cord for other devices.

Lenovo product service information for Taiwan

Keyboard and mouse compliance statement for Taiwan

Eurasian compliance mark

Brazil audio notice
Ouvir sons com mais de 85 decibéis por longos períodos pode provocar danos ao sistema auditivo.

Mexico wireless-radio compliance information
Advertencia: En Mexico la operación de este equipo estásujeta a las siguientes dos condiciones: (1) es
posible que este equipo o dispositivo no cause interferencia perjudicial y (2) este equipo o dispositivo debe
aceptar cualquier interferencia, incluyendo la que pueda causar su operación no deseada.

Additional regulatory information
For additional regulatory information, refer to the Regulatory Notice shipped with your computer. Depending
on the configuration of your computer and the country or region where the computer was purchased,
you might have received additional printed regulatory notices. All regulatory notices are available on the
Lenovo Support Web site in electronic format. To access electronic copies of the documentation, go to
http://www.lenovo.com/UserManuals.

Appendix A. Regulatory information

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Appendix B. WEEE and recycling information
Lenovo encourages owners of information technology (IT) equipment to responsibly recycle their
equipment when it is no longer needed. Lenovo offers a variety of programs and services to assist
equipment owners in recycling their IT products. For information on recycling Lenovo products, go to
http://www.lenovo.com/recycling. The latest environmental information about our products is available at
http://www.lenovo.com/ecodeclaration.

Important WEEE information

The WEEE marking on Lenovo products applies to countries with WEEE and e-waste regulations (for
example, the European WEEE Directive, India E-Waste Management & Handling Rules, 2011). Appliances are
labeled in accordance with local regulations concerning waste electrical and electronic equipment (WEEE).
These regulations determine the framework for the return and recycling of used appliances as applicable
within each geography. This label is applied to various products to indicate that the product is not to be
thrown away, but rather put in the established collection systems for reclaiming these end of life products.
Users of electrical and electronic equipment (EEE) with the WEEE marking must not dispose of end of
life EEE as unsorted municipal waste, but use the collection framework available to them for the return,
recycle, and recovery of WEEE and to minimize any potential effects of EEE on the environment and
human health due to the presence of hazardous substances. For additional WEEE information, go to:
http://www.lenovo.com/recycling

Recycling information for Japan
Collecting and recycling a disused Lenovo computer or monitor
If you are a company employee and need to dispose of a Lenovo computer or monitor that is the property
of the company, you must do so in accordance with the Law for Promotion of Effective Utilization of
Resources. Computers and monitors are categorized as industrial waste and should be properly disposed
of by an industrial waste disposal contractor certified by a local government. In accordance with the Law
for Promotion of Effective Utilization of Resources, Lenovo Japan provides, through its PC Collecting
and Recycling Services, for the collecting, reuse, and recycling of disused computers and monitors. For
details, visit the Lenovo Web site at http://www.lenovo.com/recycling/japan. Pursuant to the Law for
Promotion of Effective Utilization of Resources, the collecting and recycling of home-used computers
and monitors by the manufacturer was begun on October 1, 2003. This service is provided free of
charge for home-used computers sold after October 1, 2003. For details, visit the Lenovo Web site at
http://www.lenovo.com/recycling/japan.

143

Disposing of Lenovo computer components
Some Lenovo computer products sold in Japan may have components that contain heavy metals or other
environmental sensitive substances. To properly dispose of disused components, such as a printed circuit
board or drive, use the methods described above for collecting and recycling a disused computer or monitor.
Disposing of disused lithium batteries from Lenovo computers
A button-shaped lithium battery is installed inside your Lenovo computer to provide power to the computer
clock while the computer is off or disconnected from the main power source. If you need to replace it with a
new one, contact your place of purchase or contact Lenovo for service. If you need to dispose of a disused
lithium battery, insulate it with vinyl tape, contact your place of purchase or an industrial-waste-disposal
operator, and follow their instructions. Disposal of a lithium battery must comply with local ordinances
and regulations.

Recycling information for Brazil
Declarações de Reciclagem no Brasil
Descarte de um Produto Lenovo Fora de Uso
Equipamentos elétricos e eletrônicos não devem ser descartados em lixo comum, mas enviados à pontos de
coleta, autorizados pelo fabricante do produto para que sejam encaminhados e processados por empresas
especializadas no manuseio de resíduos industriais, devidamente certificadas pelos orgãos ambientais, de
acordo com a legislação local.
A Lenovo possui um canal específico para auxiliá-lo no descarte desses produtos. Caso você possua
um produto Lenovo em situação de descarte, ligue para o nosso SAC ou encaminhe um e-mail para:
reciclar@lenovo.com, informando o modelo, número de série e cidade, a fim de enviarmos as instruções
para o correto descarte do seu produto Lenovo.

Battery recycling information for Taiwan

Battery recycling information for the European Union

Notice: This mark applies only to countries within the European Union (EU).

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Batteries or packaging for batteries are labeled in accordance with European Directive 2006/66/EC
concerning batteries and accumulators and waste batteries and accumulators. The Directive determines the
framework for the return and recycling of used batteries and accumulators as applicable throughout the
European Union. This label is applied to various batteries to indicate that the battery is not to be thrown
away, but rather reclaimed upon end of life per this Directive.
In accordance with the European Directive 2006/66/EC, batteries and accumulators are labeled to indicate
that they are to be collected separately and recycled at end of life. The label on the battery may also
include a chemical symbol for the metal concerned in the battery (Pb for lead, Hg for mercury, and Cd for
cadmium). Users of batteries and accumulators must not dispose of batteries and accumulators as unsorted
municipal waste, but use the collection framework available to customers for the return, recycling, and
treatment of batteries and accumulators. Customer participation is important to minimize any potential
effects of batteries and accumulators on the environment and human health due to the potential presence of
hazardous substances. For proper collection and treatment, go to:
http://www.lenovo.com/recycling

Appendix B. WEEE and recycling information

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Appendix C. Restriction of Hazardous Substances Directive
(RoHS)
The latest environmental information is available at http://www.lenovo.com/ecodeclaration.

European Union RoHS
This Lenovo product, with included parts (cables, cords, and so on) meets the requirements of Directive
2011/65/EU on the restriction of the use of certain hazardous substances in electrical and electronic
equipment (“RoHS recast” or “RoHS 2”).
For more information about Lenovo worldwide compliance on RoHS, go to:
http://www.lenovo.com/social_responsibility/us/en/RoHS_Communication.pdf

Turkish RoHS
The Lenovo product meets the requirements of the Republic of Turkey Directive on the Restriction of the Use
of Certain Hazardous Substances in Waste Electrical and Electronic Equipment (WEEE).

Ukraine RoHS

India RoHS
RoHS compliant as per E-Waste (Management & Handling) Rules, 2011.

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China RoHS

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Appendix D. China Energy Label

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Appendix E. ENERGY STAR model information

ENERGY STAR® is a joint program of the U.S. Environmental Protection Agency and the U.S. Department
of Energy aimed at saving money and protecting the environment through energy efficient products and
practices.
Lenovo is proud to offer our customers products with an ENERGY STAR compliant designation. Some
models of the following machine types have been designed and tested to conform to the ENERGY STAR
program requirement for computers at the time of manufacture: 10FC, 10FD, 10FV, and 10FW. For more
information about ENERGY STAR ratings for Lenovo computers, go to http://www.lenovo.com.
By using ENERGY STAR compliant products and taking advantage of the power-management features of
your computer, you reduce the consumption of electricity. Reduced electrical consumption contributes to
potential financial savings, a cleaner environment, and the reduction of greenhouse gas emissions.
For more information about ENERGY STAR, go to:
http://www.energystar.gov
Lenovo encourages you to make efficient use of energy an integral part of your day-to-day operations. To
help in this endeavor, set the following power-management features to take effect when your computer has
been inactive for a specified duration:
Table 1. ENERGY STAR power-management features
Windows 7 or Windows 10 operating system
Power plan: Default
• Turn off the display: After 10 minutes
• Put the computer to sleep: After 25 minutes
• Advanced power settings:
– Turn off hard disk drives: After 20 minutes
– Hibernate: Never

To awaken your computer from a Sleep mode, press any key on your keyboard.
To change power settings, do the following:
1. Open Control Panel by doing one of the following:
• For Windows 7: Click the Start button to open the Start menu.
• For Windows 10: Right-click the Start button to open the Start context menu.
2. Click Control Panel. View Control Panel using Large icons or Small icons, and then click Power
Options.
3. Follow the instructions on the screen.

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Appendix F. Notices
Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult
your local Lenovo representative for information on the products and services currently available in your
area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that
Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service
that does not infringe any Lenovo intellectual property right may be used instead. However, it is the user's
responsibility to evaluate and verify the operation of any other product, program, or service.
Lenovo may have patents or pending patent applications covering subject matter described in this
document. The furnishing of this document does not give you any license to these patents. You can send
license inquiries, in writing, to:
Lenovo (United States), Inc.
1009 Think Place - Building One
Morrisville, NC 27560
U.S.A.
Attention: Lenovo Director of Licensing
LENOVO PROVIDES THIS PUBLICATION “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF NON-INFRINGEMENT,
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do not allow
disclaimer of express or implied warranties in certain transactions, therefore, this statement may not apply
to you.
This information could include technical inaccuracies or typographical errors. Changes are periodically
made to the information herein; these changes will be incorporated in new editions of the publication.
Lenovo may make improvements and/or changes in the product(s) and/or the program(s) described in this
publication at any time without notice.
The products described in this document are not intended for use in implantation or other life support
applications where malfunction may result in injury or death to persons. The information contained in this
document does not affect or change Lenovo product specifications or warranties. Nothing in this document
shall operate as an express or implied license or indemnity under the intellectual property rights of Lenovo
or third parties. All information contained in this document was obtained in specific environments and is
presented as an illustration. The result obtained in other operating environments may vary.
Lenovo may use or distribute any of the information you supply in any way it believes appropriate without
incurring any obligation to you.
Any references in this publication to non-Lenovo Web sites are provided for convenience only and do not in
any manner serve as an endorsement of those Web sites. The materials at those Web sites are not part of
the materials for this Lenovo product, and use of those Web sites is at your own risk.
Any performance data contained herein was determined in a controlled environment. Therefore, the result
obtained in other operating environments may vary significantly. Some measurements may have been
made on development-level systems and there is no guarantee that these measurements will be the same
on generally available systems. Furthermore, some measurements may have been estimated through
extrapolation. Actual results may vary. Users of this document should verify the applicable data for their
specific environment.

153

Trademarks
The following terms are trademarks of Lenovo in the United States, other countries, or both:
Lenovo
The Lenovo logo
ThinkCentre
The ThinkCentre logo
Rescue and Recovery
ThinkVantage
Microsoft, Windows, and Windows Media are trademarks of the Microsoft group of companies.
Intel is a trademark of Intel Corporation in the U.S. and/or other countries.
DisplayPort is a trademark of the Video Electronics Standards Association.
Other company, product, or service names may be trademarks or service marks of others.

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