Manuals / Lenovo / Computer Equipment / Laptop

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

Models: 8705 9646 9279 9635 8995 9648 9287 6490 8985 9387 8973 9269 8983 8991 9383 8975 9389 9283 8701 8717 9694 8979 9631 9277 9379 9265 9637 8700

1 96

Download 96 pages 23.61 Kb

Page 56

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

Image 56

Lenovo 6490, 9635, 9637, 9277, 9269, 9631, 9283, 9287, 9265, 9383, 9379, 9648 Erasing a lost or forgotten password clearing Cmos

Contents

User Guide Page User Guide Page Contents Troubleshooting Important safety information Conditions that require immediate action General safety guidelines Service and upgrades Power cords and power adapters Static electricity prevention Voltage-selection switch Extension cords and related devices Plugs and outletsExternal devices Batteries Heat and product ventilation Electrical current safety information Operating environment To 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 cable Using headphones or earphones Data safetyCleaning and maintenance Additional safety information Introduction Xviii User Guide Arranging your workspace Comfort Electrical outlets and cable lengths Glare and lightingAir circulation Setting up your computer Connecting your computer User Guide Setting up your computer User Guide 1394 Turning on power Finishing the software installation Installing other operating systems Completing important tasksUpdating your operating system Updating your antivirus software User Guide Installing options Features Video subsystem Operating systems preinstalled varies by model type Specifications DimensionsWeight Environment Available options Tools required Installing external options Handling static-sensitive devices Locating the connectors on the front of your computer Locating the connectors on the rear of your computer Connector Description Obtaining device drivers Removing the cover Locating components Identifying parts on the system board Installing options User Guide Installing memory What to do next Installing adapters What to do next Installing internal drives Drive specifications Installing options Installing a drive in bay 1 or bay Installing options Connecting drives Connecting the first optical drive Connecting a serial ATA hard disk drive Installing security features Integrated 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 disc Performing 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 following Recovering or installing device drivers Setting a rescue device in the startup sequence Solving recovery problems User Guide Using the Setup Utility Starting the Setup Utility programViewing and changing settings Using passwords User Password Administrator PasswordSetting, changing, and deleting a password Using Security Profile by Device Changing the startup device sequence Selecting a startup deviceSelecting a temporary startup device Advanced settings Exiting from the Setup Utility program Updating 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 DOS Running diagnostics from the CD or diskettes Cleaning the mouse PC-Doctor for Windows PEOptical mouse Non-optical mouse 1 Retainer ring 2 Ball 3 Plastic rollers 4 Ball cage Getting information, help, and service Information resourcesOnline Books folder ThinkVantage Productivity Center Help and service Access HelpSafety and warranty Using the documentation and diagnostic programs Calling for service Using other services Purchasing additional services Appendix A. Manual modem commands Basic AT commands Low speaker volume Set Pulse dial as defaultSet Tone Dial as default Internal speaker on until carrier detected Extended AT commands MNP/V.42/V.42bis/V.44 commands Fax Class 1 commands Fax Class 2 commands Voice commands Appendix A. Manual modem commands User Guide Appendix B. Notices Television output notice Trademarks Index Page Page Part Number