Lenovo 1942, 1938, 1962, 1837, 1782, 1739, 1762, 1665, 1738, 1664, 1763, 1741 Troubleshooting procedure

Page 62

Symptom

Action

 

 

The operating system does not

Verify that:

start.

• The startup sequence includes the device where the operating system resides.

 

 

Usually, the operating system is on the hard disk drive. For more information,

 

see “Selecting a startup device” on page 43.

 

 

The computer beeps multiple

Verify that no keys are stuck.

times before the operating

 

system starts.

 

 

 

Troubleshooting procedure

Use the following procedure as a starting point for diagnosing problems you are experiencing with your computer:

1.Verify that the cables for all attached devices are connected correctly and securely.

2.Verify that all attached devices that require ac power are connected to properly grounded, functioning electrical outlets.

3.Verify that all attached devices are enabled in the BIOS settings of your computer. For more information about accessing and changing the BIOS settings, refer to your Chapter 7 “Using the Setup Utility program” on page 41.

4.Go to the “Troubleshooting” on page 52 and follow the instructions for the type of problem you are experiencing. If the Troubleshooting information does not help you resolve a problem, continue with the next step.

5.Try using a previously captured configuration to see if a recent change to hardware or software settings has caused a problem. Before restoring a previous configuration, capture your current configuration in case the older configuration settings do not solve the problem or have adverse affects. To restore a captured configuration, do the following:

•On the Windows 7 operating system, click Start ➙ Control Panel ➙ System and Security ➙ System ➙ System Protection ➙ System Restore.

If this does not correct the problem, continue with the next step.

6.Run the diagnostic programs. See “Diagnostic programs” on page 67 for more information.

•If the diagnostic programs detect a hardware failure, contact the Lenovo Customer Support Center. See Chapter 11 “Getting information, help, and service” on page 69 for more information.

•If you are unable to run the diagnostic programs, contact the Lenovo Customer Support Center. See Chapter 11 “Getting information, help, and service” on page 69 for more information.

•If the diagnostic programs do not detect a hardware failure, continue with the next step.

7.Use an antivirus program to see if your computer has been infected by a virus. If the program detects a virus, remove the virus.

8.If none of these actions solve the problem, seek technical assistance. See Chapter 11 “Getting information, help, and service” on page 69 for more information.

Troubleshooting

Use the troubleshooting information to find solutions to problems that have definite symptoms.

If the symptom your computer is experiencing occurred immediately after you installed a new hardware option or new software, do the following before referring to the troubleshooting information:

1.Remove the new hardware option or software. If you must remove the computer cover to remove a hardware option, make sure you review and follow the electrical safety information provided with your computer. For your safety, do not operate the computer with the cover removed.

52ThinkCentre User Guide

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Contents ThinkCentre User Guide Second Edition October Copyright Lenovo Contents Appendix A. Notices Static electricity prevention Important safety informationService and upgrades Power cords and power adapters Extension cords and related devicesHeat and product ventilation Plugs and outletsExternal devices Modem safety information Operating environmentLaser compliance statement Power supply statementCleaning and maintenance Viii ThinkCentre User Guide Features Product overviewInput/Output I/O features System management featuresColor temperature adjustment Power supplyPreinstalled software programs Preinstalled operating systemSoftware provided by Lenovo SpecificationsSoftware overview Lenovo ThinkVantage Tools Product RecoveryThinkVantage Password Manager Lenovo WelcomeAdobe Reader Antivirus software Locations Front connector, control, and indicator locations Locating connectors on the rear of your computer Rear connector locationsAdjusting the computer stand Connector DescriptionMachine type and model label Machine type and model labelThinkCentre User Guide Using the keyboard Using your computerFrequently asked questions Using Windows shortcut keysUsing the wheel mouse Using the blue ThinkVantage buttonUsing a fingerprint reader Adjusting audioUsing CDs and DVDs Setting the volume from the desktopSetting the volume from Control Panel Adding the volume icon to the taskbarRecording a CD or DVD Handling and storing CD and DVD mediaPlaying a CD or DVD Using the single-touch feature Using the single-touch and multi-touch featureColor temperature adjustment Using the multi-touch featureMaking brightness adjustment Selecting a pre-defined color temperatureSwitching to RGB adjustment Red-adjustment Green-adjustment Blue-adjustment ExitUsing your computer ThinkCentre User Guide Arranging your workspace Accessibility and comfortYou and your computer ComfortElectrical outlets and cable lengths Glare and lightingAir circulation Register your computer with Lenovo Voltage-selection switchReplacement power cords Moving your computer to another country or regionThinkCentre User Guide Security features SecurityAttaching an integrated cable lock Using passwordsBios passwords Using and understanding firewalls Windows passwordsSetting the fingerprint reader Protecting data against virusesThinkCentre User Guide Installing external options Installing or replacing hardwareInstalling or replacing hardware Replacing the wireless keyboard Replacing the wireless mouseOpening the battery compartment Closing the battery compartment cover Obtaining device driversCreating recovery media Recovery informationCreating and using recovery media Performing a backup operation Using recovery mediaPerforming backup and recovery operations Click the Restore your system from a backup icon Performing a recovery operationUsing the Rescue and Recovery workspace Creating a rescue medium Creating and using a rescue mediumUsing a rescue medium Reinstalling preinstalled device drivers Reinstalling preinstalled applications and device driversReinstalling preinstalled applications Solving recovery problems Reinstalling software programsReinstalling device drivers Recovery information ThinkCentre User Guide Viewing and changing settings Using the Setup Utility programStarting the Setup Utility program Administrator Password Password considerationsPower-On Password Hard Disk PasswordSelecting a temporary startup device Enabling or disabling a deviceSelecting a startup device Selecting or changing the startup device sequenceExiting from the Setup Utility program Updating system programs Using system programsUpdating flashing the Bios from a disc Updating flashing the Bios from your operating system Click Downloads and driversKeeping your computer current Preventing problemsUsing System Update Getting the latest device drivers for your computerBasics Keyboard Cleaning your computerComputer Optical mouseMoving your computer Good maintenance practicesCleaning a glass-screen surface Troubleshooting and diagnostics Basic troubleshootingTroubleshooting procedure TroubleshootingAudio problems No audio in WindowsNo audio in DOS applications or games CD problemsSound comes from one external speaker only Black screen instead of DVD video DVD problemsCD or DVD does not work Playback is very slow or choppy DVD movie will not playNo audio or intermittent audio while playing DVD movie Invalid disc or no disc found messageAll or some keys on the keyboard do not work Intermittent problemsKeyboard, mouse, or pointing device problems Pointer on the screen does not move smoothly with the mouse Wireless keyboard does not workMouse or pointing device does not work Fingerprint reader does not workImage appears to be flickering Monitor problemsWrong characters appear on the screen Image is discolored Networking problemsEthernet problems Click Start Control Panel Click Hardware and Sound Wake on LAN feature is not workingYour computer cannot connect to the network Adapter stops working for no apparent reasonBluetooth problems Wireless LAN problemWireless WAN problem Sound does not come from the Bluetooth headphone Option problemsAn option that was just installed does not work An option that previously worked does not work nowInsufficient free hard disk drive space Performance and lockup problemsClick Disk Cleanup Click Start ComputerExcessive number of fragmented files Printer problemsSerial port problems Software problems Software does not work as expectedUSB problems Diagnostic programsLenovo ThinkVantage Toolbox Creating a diagnostic discRunning the diagnostic program from a diagnostic disc PC-Doctor for DOSGetting information, help, and service Calling for service Help and serviceUsing the documentation and diagnostic programs Lenovo Support Web siteUsing other services Purchasing additional servicesThinkCentre User Guide Appendix A. Notices Trademarks Television output notice Appendix B. Regulatory informationExport classification notice Electronic emissions noticesIndustry Canada Class B emission compliance statement Additional regulatory information ThinkCentre User Guide Recycling information Appendix C. Weee and recycling informationImportant information for the European Directive 2002/96/EC ThinkCentre User Guide Index Optical mouse cleaning Password Administrator Considerations Page 0B03427
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