Lenovo 804 manual ThinkCentre User Guide

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2.Disconnect the mouse cable from the computer.

3.Turn the mouse upside down to check the lens.

a.If there is a smudge on the lens, gently clean the area with a plain cotton-tipped swab.

b.If there is debris in the lens, gently blow the debris away from the area.

4.Check the surface on which you are using the mouse. If you have a very intricate picture or pattern beneath the mouse, it may be difficult for the digital signal processor (DSP) to determine changes in the mouse position.

5.Reconnect the mouse cable to the computer.

6.Turn your computer back on.

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Contents ThinkCentre User Guide Second Edition September Copyright Lenovo 2010 Contents Index Important safety information Iv ThinkCentre User Guide Features Product overviewSystem management features Input/Output I/O featuresSecurity features ConnectivityPreinstalled operating system SpecificationsPreinstalled software programs Software overview Software provided with your Windows operating systemLenovo ThinkVantage Tools ThinkVantage Productivity CenterProduct Recovery ThinkVantage Rescue and RecoveryPassword Manager ThinkVantage Client Security SolutionLocations Adobe ReaderLocating connectors and parts on the rear of your computer ConnectorLocating components Locating parts on the system boardLocating internal drives System board part locationsDrive bay locations Installing or replacing hardware Installing or replacing hardwareInstalling external options Handling static-sensitive devicesRemoving the computer cover Removing the computer coverRemoving and reinstalling the front bezel Removing the front bezelAccessing the system board components and drives Reinstalling the front bezelInstalling or replacing a PCI card Pivoting the drive bay assembly upwardThinkCentre User Guide Removing the PCI card Installing or replacing a memory module What to do nextRemoving the memory module Replacing the battery Installing the memory moduleReplacing the heat sink and fan assembly Removing the old batteryRemoving the heat sink fan duct Screws that secure the heat sink and fan assembly Installing the heat sink fan duct Replacing the microprocessorAccessing 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 Installing the optical drive Replacing the hard disk drivePivoting the drive bay assembly Removing the hard disk drive Replacing the front fan assembly Installing the hard disk driveRemoving the front fan assembly Installing the front fan assembly Replacing the USB keyboard or mouseCompleting the parts replacement Connecting the USB keyboard or mouseBasic security features Obtaining device driversInstalling an integrated cable lock 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 Using the Rescue and Recovery workspace Creating and using a rescue mediumUsing a rescue medium Creating a rescue mediumInstalling or reinstalling device drivers Solving recovery problemsUsing the Setup Utility program Starting the Setup Utility programViewing or changing settings Using passwordsPassword considerations Power-on passwordAdministrator 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 Troubleshooting and diagnostic programs Basic troubleshootingLenovo ThinkVantage Toolbox Diagnostic programsPC-Doctor for Rescue and Recovery Cleaning an optical mouse PC-Doctor for DOSThinkCentre User Guide Getting information, help, and service Information resourcesOnline Books folder Lenovo ThinkVantage ToolsAccess Help Safety and warrantyThinkVantage Productivity Center Lenovo WelcomeLenovo Support Web site Help and serviceUsing the documentation and diagnostic programs Calling for service Using other servicesPurchasing additional services ThinkCentre User Guide Appendix A. Notices Television output notice European conformance CE mark TrademarksAppendix A. Notices ThinkCentre User Guide Index CRUKeyboard, replacing Lenovo Customer Support Center Set Power-On Password ThinkCentre User Guide Page 71Y8530