Lenovo 6490, 9635, 9637, 9277, 9269, 9631, 9283 Erasing a lost or forgotten password clearing Cmos

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To change the battery:

1.Turn off the computer and all attached devices.

2.Remove the computer cover. See “Removing the cover” on page 20.

3.Locate the battery. See “Identifying parts on the system board” on page 22.

4.Remove the old battery.

5.Install the new battery.

6.Replace the computer cover, and plug in the power cord. See “Replacing the cover and connecting the cables” on page 37.

Note: When the computer is turned on for the first time after battery replacement, an error message might be displayed. This is normal after replacing the battery.

7.Turn on the computer and all attached devices.

8.Use the Setup Utility program to set the date and time and any passwords. See Chapter 5, “Using the Setup Utility,” on page 47.

Erasing a lost or forgotten password (clearing CMOS)

This section applies to lost or forgotten passwords. For more information about lost or forgotten passwords, see the ThinkVantage Productivity Center program on your desktop.

To erase a forgotten password:

1.Turn off the computer and all attached devices.

2.Remove the computer cover. See “Removing the cover” on page 20.

3.Locate the Clear CMOS/Recovery jumper on the system board. See “Identifying parts on the system board” on page 22.

4.Move the jumper from the standard position (pins 1 and 2) to the maintenance or configure position (pins 2 and 3).

5.Replace the computer cover and connect the power cord. See “Replacing the cover and connecting the cables” on page 37.

6.Restart the computer, leave it on for approximately ten seconds. Turn off the computer by holding the power switch for approximately five seconds. The computer will turn off.

7.Repeat steps 2 through 4 on page 36.

36User Guide

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Contents User Guide Page User Guide Page Contents Troubleshooting Important safety information Conditions that require immediate actionGeneral safety guidelines Service and upgradesPower cords and power adapters Static electricity preventionVoltage-selection switch Extension cords and related devices Plugs and outletsExternal devices BatteriesHeat and product ventilation Electrical current safety information Operating environmentTo connect To disconnect Lithium battery noticeModem safety information Laser compliance statement Power supply statementProducts with television tuner options installed Example of antenna grounding Proper grounding for the cableUsing headphones or earphones Data safetyCleaning and maintenance Additional safety information Introduction Xviii User Guide Arranging your workspace ComfortElectrical outlets and cable lengths Glare and lightingAir circulation Setting up your computer Connecting your computerUser Guide Setting up your computer User Guide 1394 Turning on power Finishing the software installationInstalling other operating systems Completing important tasksUpdating your operating system Updating your antivirus softwareUser Guide Installing options FeaturesVideo subsystem Operating systems preinstalled varies by model type Specifications DimensionsWeight EnvironmentAvailable options Tools requiredInstalling external options Handling static-sensitive devicesLocating the connectors on the front of your computer Locating the connectors on the rear of your computer Connector Description Obtaining device driversRemoving the cover Locating components Identifying parts on the system board Installing options User Guide Installing memory What to do nextInstalling adapters What to do next Installing internal drives Drive specificationsInstalling options Installing a drive in bay 1 or bay Installing options Connecting drives Connecting the first optical driveConnecting a serial ATA hard disk drive Installing security featuresIntegrated cable lock Padlock Password protectionChanging the battery Erasing a lost or forgotten password clearing Cmos Replacing the cover and connecting the cables User Guide Recovering software Creating and using the Product Recovery discPerforming backup and recovery operations Using the Rescue and Recovery workspace Creating and using rescue media Creating and using a Recovery Repair diskette To create rescue media, do the followingRecovering or installing device drivers Setting a rescue device in the startup sequence Solving recovery problemsUser Guide Using the Setup Utility Starting the Setup Utility programViewing and changing settings Using passwordsUser Password Administrator PasswordSetting, changing, and deleting a password Using Security Profile by DeviceChanging the startup device sequence Selecting a startup deviceSelecting a temporary startup device Advanced settings Exiting from the Setup Utility programUpdating system programs Using system programsUpdating flashing Bios from a diskette User Guide Symptom Action Troubleshooting and diagnosticsBasic troubleshooting Diagnostic programs PC-Doctor for Windows PC-Doctor for DOSRunning diagnostics from the CD or diskettes Cleaning the mouse PC-Doctor for Windows PEOptical mouse Non-optical mouse1 Retainer ring 2 Ball 3 Plastic rollers 4 Ball cage Getting information, help, and service Information resourcesOnline Books folder ThinkVantage Productivity CenterHelp and service Access HelpSafety and warranty Using the documentation and diagnostic programs Calling for serviceUsing other services Purchasing additional servicesAppendix A. Manual modem commands Basic AT commandsLow speaker volume Set Pulse dial as defaultSet Tone Dial as default Internal speaker on until carrier detectedExtended AT commands MNP/V.42/V.42bis/V.44 commands Fax Class 1 commands Fax Class 2 commandsVoice commands Appendix A. Manual modem commands User Guide Appendix B. Notices Television output notice TrademarksIndex Page Page Part Number