Recovering The Bios - Lenovo Aptiva Product Manual

Aptiva S Series 1G Product Guide

Recovering the BIOS

It is unlikely that anything will interrupt the BIOS upgrade; however, if an interruption occurs, the
BIOS could be damaged. The following steps explain how to recover the BIOS if an upgrade fails.
The following procedure uses recovery mode for the Setup program.
NOTE
Because of the small amount of code available in the boot block area, there is no video support.
You will not see anything on the screen during this procedure. Monitor the procedure by listening
to the speaker and looking at the diskette drive LED.
1. Turn off the computer, disconnect the computer's power cord, and disconnect all external
peripherals.
2. Remove the computer cover and locate the configuration jumper block (J7B1).
3. Remove the jumper from all pins as shown below to set recovery mode for Setup.
1
3
J7B1
4. Insert the bootable BIOS upgrade diskette into diskette drive A.
5. Replace the computer cover, connect the power cord, turn on the computer, and allow it to
boot. The recovery process will take a few minutes.
6. Listen to the speaker.


Two beeps and the end of activity in drive A indicate successful BIOS recovery.


A series of continuous beeps indicates failed BIOS recovery.
7. If recovery fails, return to step 1 and repeat the recovery process.
8. If recovery is successful, turn off the computer, and disconnect its power cord.
9. Remove the computer cover and continue with the following steps.
10. On the jumper block (J7B1), reinstall the jumper back on pins 1-2 as shown below to set
normal mode for Setup.
1
3
J7B1
11. Leave the upgrade diskette in drive A, replace the computer cover, and connect the computer's
power cord.
12. Turn on the computer and continue with the BIOS upgrade (see page 43).
44