Lenovo 8095, 8426, 8421, 8145, 8142, 8420, 8141, 8096 manual Recovering from a POST/BIOS update failure

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2.Locate the Downloadable files for your machine type as follows:

a.Under Use Quick path, type your machine type and click Go.

b.Click Continue.

c.Click Downloads and drivers.

d.Under the BIOS category, click the Flash BIOS update.

e.Click the .txt file that contains the installation instructions for the flash BIOS update (flash from the operating system version).

3.Print these instructions. This is very important since they are not on the screen after the download begins.

4.From your browser, click Back to return to the list of files. Carefully follow the printed instructions to download, extract, and install the update.

Recovering from a POST/BIOS update failure

If power to your computer is interrupted while POST/BIOS is being updated (flash update), your computer might not restart correctly. If this happens, perform the following procedure (also known as a Boot-block Recovery):

1.Turn off the computer and any attached devices, such as printers, monitors, and external drives.

2.Unplug all power cords from electrical outlets, and remove the computer cover. See “Removing the cover” on page 10.

3.Pivot the drive bay assembly upward to gain access to the system board.

4.Locate the Clear CMOS/Recovery jumper on the system board. See “Identifying parts on the system board” on page 11.

5.If necessary, refer to Installing adapters to remove any adapters that impede access to the Clear CMOS/Recovery jumper.

6.Move the jumper from the standard position (pins 1 and 2) to pins 2 and 3.

7.Replace the computer cover. See “Replacing the cover and connecting the cables” on page 23.

8.Reconnect the power cords for the computer and monitor to electrical outlets.

9.Insert the POST/BIOS update (flash) diskette into drive A, and turn on the computer and the monitor.

10.The recovery session will take two to three minutes. During this time you will hear a series of beeps. After the update session is completed, there will be no video, the series of beeps will end, and the system will automatically turn off. Remove the diskette from the diskette drive.

11.Repeats steps 2 through 5 on page 30.

12.Replace the Clear CMOS/Recovery jumper to its original position.

13.Replace any adapters that were removed.

14.Replace the computer cover and reconnect any cables that were disconnected. See “Replacing the cover and connecting the cables” on page 23.

15.Turn on the computer to restart the operating system.

30User Guide

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Contents User Guide Types 8095, 8096, 8141 Types 8145, 8420, 8421 Page User Guide Types 8095, 8096, 8141 Types 8145, 8420, 8421 Page Contents Iv User Guide Important safety information Conditions that require immediate actionGeneral safety guidelines ServicePower cords and power adapters Extension cords and related devicesPlugs and outlets BatteriesCD and DVD drive safety Heat and product ventilationLithium battery notice Additional safety informationTo connect To disconnect Modem safety information Laser compliance statementPower supply statement Overview Information resourcesXiv User Guide Installing options FeaturesMemory Operating systems, preinstalled varies by model type Specifications Tools required Available optionsHandling static-sensitive devices Installing external options Locating 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 boardInstalling memory Installing options Installing adapters What to do nextWhat to do next Installing internal drives Drive specificationsInstalling a drive User Guide Connecting the first optical drive Installing security features Connecting a serial ATA hard disk driveChanging the battery Password protectionPadlock loop User Guide Erasing a lost or forgotten password clearing Cmos Replacing the cover and connecting the cablesUser Guide Viewing and changing settings Using the Setup Utility programStarting the Setup Utility program Using passwordsIDE Drive User Password User passwordAdministrator password IDE Drive Master PasswordUsing Security Profile by Device Setting, changing, and deleting a passwordSelecting a startup device Selecting a temporary startup device Exiting from the Setup Utility programChanging the startup sequence Appendix A. Updating system programs Updating flashing Bios from a disketteUpdating flashing Bios from your operating system System programsRecovering from a POST/BIOS update failure Click Continue Click Downloads and driversCleaning an optical mouse Appendix B. Cleaning the mouseCleaning a mouse with a ball User Guide Appendix C. Manual modem commands Basic AT commandsSet Tone Dial as default Low speaker volumeSet Pulse 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 C. Manual modem commands User Guide Appendix D. Notices Television output notice TrademarksIndex Page Page Part Number 19R0462
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