Lenovo 804 manual Troubleshooting and diagnostic programs, Basic troubleshooting

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Chapter 6. Troubleshooting and diagnostic programs

This chapter provides information about some basic troubleshooting and diagnostic programs. If your computer problem is not described in this chapter, see Chapter 7 “Getting information, help, and service” on page 63 for additional troubleshooting resources.

This chapter contains the following topics:

•“Basic troubleshooting” on page 59

•“Diagnostic programs” on page 60

•“Cleaning an optical mouse” on page 61

Basic troubleshooting

The following table provides some basic information to help you troubleshoot your computer problems.

Note: If you cannot solve the problem after doing the basic troubleshooting, have the computer serviced. Refer to the ThinkCentre Safety and Warranty Guide that came with your computer for the safety and warranty information and the list of service and support telephone numbers. You can also get the latest service and support telephone numbers and a PDF version of the ThinkCentre Safety and Warranty Guide from the Lenovo Support Web site at:

http://support.lenovo.com

Symptom

Action

 

 

The computer does not start

Verify that:

when you press the power

• The power cord is correctly connected to the rear of the computer and to a

switch.

working electrical outlet.

 

 

• 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 monitor screen is blank.

Verify that:

 

• The monitor signal cable is correctly connected to the monitor and to the

 

appropriate monitor connector on the computer. If your computer has a PCI

 

graphics card installed, be sure to use the monitor connector on the graphics

 

card rather than the integrated one on the system board.

 

• The monitor power cord is correctly connected to the monitor and to a working

 

electrical outlet.

 

• The monitor is turned on and the brightness and contrast controls are set

 

correctly.

 

• The computer voltage matches the voltage available at the electrical outlet for

 

your country or region.

 

 

The USB keyboard or mouse

Verify that:

does not work.

• The computer is turned on.

 

 

• The USB keyboard or mouse is correctly connected to one of the USB

 

connectors on the computer.

 

• For the USB keyboard, no keys are stuck.

 

• The USB mouse is clean. Refer to “Cleaning an optical mouse” on page 61.

 

 

© Copyright Lenovo 2010, 2011

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Contents ThinkCentre User Guide Second Edition September Copyright Lenovo 2010 Contents Index Important safety information Iv ThinkCentre User Guide Product overview FeaturesInput/Output I/O features System management featuresSecurity features ConnectivityPreinstalled operating system SpecificationsPreinstalled software programs Software provided with your Windows operating system Software overviewLenovo ThinkVantage Tools ThinkVantage Productivity CenterThinkVantage Rescue and Recovery Product RecoveryPassword Manager ThinkVantage Client Security SolutionAdobe Reader LocationsConnector Locating connectors and parts on the rear of your computerLocating parts on the system board Locating componentsSystem board part locations Locating internal drivesDrive bay locations Installing or replacing hardware Installing or replacing hardwareInstalling external options Handling static-sensitive devicesRemoving the computer cover Removing the computer coverRemoving the front bezel Removing and reinstalling the front bezelReinstalling the front bezel Accessing the system board components and drivesPivoting the drive bay assembly upward Installing or replacing a PCI cardThinkCentre User Guide Removing the PCI card What to do next Installing or replacing a memory moduleRemoving the memory module Installing the memory module Replacing the batteryRemoving the old battery Replacing the heat sink and fan assemblyRemoving the heat sink fan duct Screws that secure the heat sink and fan assembly Replacing the microprocessor Installing the heat sink fan ductAccessing the microprocessor Removing the microprocessor Replacing the power supply assembly Removing the heat sink fan duct Removing the power supply assembly Installing the power supply assembly Replacing the optical drive Removing the optical drive screws Slide the optical drive out of the front of the computer Replacing the hard disk drive Installing the optical drivePivoting the drive bay assembly Removing the hard disk drive Installing the hard disk drive Replacing the front fan assemblyRemoving the front fan assembly Replacing the USB keyboard or mouse Installing the front fan assemblyConnecting the USB keyboard or mouse Completing the parts replacementObtaining device drivers Basic security featuresIntegrated cable lock Installing an integrated cable lockPadlock Password protectionErasing a lost or forgotten password clearing Cmos ThinkCentre User Guide Creating recovery media Recovery informationCreating and using recovery media On the Rescue and Recovery menu, click Restore your system Using recovery mediaPerforming backup and recovery operations Click the Restore your system from a backup icon Performing a backup operationPerforming a recovery operation Creating and using a rescue medium Using the Rescue and Recovery workspaceCreating a rescue medium Using a rescue mediumSolving recovery problems Installing or reinstalling device driversStarting the Setup Utility program Using the Setup Utility programViewing or changing settings Using passwordsPower-on password Password considerationsAdministrator password Setting, changing, or deleting a passwordViewing or changing the startup device sequence Selecting a startup deviceSelecting a temporary startup device Exiting the Setup Utility program Updating system programs Using system programsUpdating flashing the Bios from a disc Click Downloads and drivers Updating flashing the Bios from your operating systemRecovering from a Post and Bios update failure Updating system programs ThinkCentre User Guide Basic troubleshooting Troubleshooting and diagnostic programsLenovo ThinkVantage Toolbox Diagnostic programsPC-Doctor for Rescue and Recovery PC-Doctor for DOS Cleaning an optical mouseThinkCentre User Guide Information resources Getting information, help, and serviceOnline Books folder Lenovo ThinkVantage ToolsSafety and warranty Access HelpThinkVantage Productivity Center Lenovo WelcomeLenovo Support Web site Help and serviceUsing the documentation and diagnostic programs Using other services Calling for servicePurchasing additional services ThinkCentre User Guide Appendix A. Notices European conformance CE mark Trademarks Television output noticeAppendix A. Notices ThinkCentre User Guide CRU IndexKeyboard, replacing Lenovo Customer Support Center Set Power-On Password ThinkCentre User Guide Page 71Y8530
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