Lenovo 8457, 8455, 8453, 8454, 8459, 8460, 8458 Erasing a lost or forgotten password clearing Cmos

Page 37

To change the battery:

1.Turn off the computer and disconnect the power cord from the electrical outlet and from the computer.

2.Remove the computer cover. See “Removing the cover” on page 10.

3.Access the system board components. See “Accessing system board components” on page 12.

4.Locate the battery. See “Identifying parts on the system board” on page 13.

5.Remove the old battery.

6.Install the new battery.

7.Replace the computer cover, and connect the cables. See “Replacing the cover and connecting the cables” on page 22.

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.

8.Turn on the computer and all attached devices.

9.Use the Setup Utility program to set the date and time and any passwords. See Chapter 2, “Using the Setup Utility,” on page 23.

Erasing a lost or forgotten password (clearing CMOS)

This section applies to lost or forgotten passwords. For more information about lost or forgotten passwords, go to the Lenovo Care program.

To erase a forgotten password:

1.Remove the computer cover. See“Removing the cover” on page 10.

2.You might have to access the system board components. See “Accessing system board components” on page 12.

3.Locate the Clear CMOS/Recovery jumper on the system board. See “Identifying parts on the system board” on page 13.

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

Note: If the system board has only two pins for clearing CMOS, add a jumper to the two pins.

5.Move the Clear CMOS/Recovery jumper back to the standard position (pins 1 and 2).

Chapter 1. Installing options 21

Page 36 Page 38
Image 37
Page 36 Page 38
Contents User Guide Lenovo 3000 J Series Page Lenovo 3000 J Series Page Contents Iv User Guide Conditions that require immediate action Important safety informationService General safety guidelinesPower cords and power adapters Plugs and outlets Extension cords and related devicesBatteries Heat and product ventilation CD and DVD drive safetyLithium battery notice Additional safety informationTo connect To disconnect Laser compliance statement Modem safety informationPower supply statement Information resources OverviewXiv User Guide Features Installing optionsConnectivity Operating systems, preinstalled varies by model Available options Dimensions SpecificationsWeight EnvironmentTools required Supported operating positionsHandling static-sensitive devices Installing external options Locating connectors on the rear of your computer Obtaining device drivers Connector DescriptionRemoving the cover Locating components Accessing system board components Identifying parts on the system board User Guide Microprocessor and heat sink 10 Sata IDE connectors Fan connector 11 Clear CMOS/Recovery jumper Installing memory What to do next Installing PCI adaptersSecurity features Changing the battery Password protectionPadlock Erasing a lost or forgotten password clearing Cmos Replacing the cover and connecting the cables Starting the Setup Utility program Using the Setup UtilityViewing and changing settings Using passwordsAdministrator or Supervisor Password Selecting a startup device Exiting from the Setup Utility programSelecting a temporary startup device Changing the startup device sequenceUser Guide Appendix A. Updating system programs Updating flashing Bios from a disketteSystem program User Guide Cleaning an optical mouse Appendix B. Cleaning the mouseCleaning a mouse with a ball User Guide Basic AT commands Appendix C. Manual modem commandsSet Pulse dial as default Low speaker volumeSet Tone Dial as default Internal speaker on until carrier detectedExtended AT commands MNP/V.42/V.42bis/V.44 commands Fax Class 2 commands Fax Class 1 commandsVoice commands Appendix C. Manual modem commands User Guide Appendix D. Notices Trademarks Television output noticeIndex Page Page Part Number 41T3715
Top Page Image Contents