Lenovo 1996 User Manual Download Page 92

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Updating (flashing) the BIOS from your operating system

Note:

Because Lenovo makes constant improvements to its Web sites, the Web page contents are subject

to change without notice, including the contents referenced in the following procedure.

To update (flash) the BIOS from your operating system, do the following:

1. Go to http://www.lenovo.com/support.

2. Do the following to locate the downloadable files for your machine type:

a. In the

Enter a product number

field, type your machine type and click

b. Click

Downloads and drivers

c. Select

BIOS

from the

Refine results

drop-down list box to easily locate all the BIOS related links.

d. Click the BIOS update link.

3. Click the TXT file that contains the instructions for updating (flashing) the BIOS from your operating

system.

4. Print these instructions. This is very important because these instructions will not be displayed on

the screen after the download begins.

5. Follow the printed instructions to download, extract, and install the update.

Recovering from a POST/BIOS update failure

If the power to your computer is interrupted while the POST and BIOS is being updated, your computer
might not restart correctly. If this happens, perform the following procedure to recover from the POST and
BIOS update failure. This procedure is commonly called Boot-block Recovery.

1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect

all power cords from electrical outlets and disconnect all cables that are connected to the computer.

2. Open the computer cover. See “Opening the computer cover” on page 28.

3. Locate the Clear CMOS /Recovery jumper on the system board. See “Locating parts on the system

board” on page 11.

4. Remove any cables that impede access to the Clear CMOS /Recovery jumper.

5. Move the jumper from the standard position (pin 1 and pin 2) to the maintenance position (pin 2 and

pin 3).

6. Reconnect any cables that were disconnected and reinstall the PCI card if removed.

7. Close the computer cover and reconnect the power cords for the computer and monitor to electrical

outlets. See “Completing the parts replacement” on page 64.

8. Turn on the computer and then insert the POST and BIOS update (flash update) disc into the optical

drive. Wait a few minutes. Then, the recovery session begins. The recovery session will take two to
three minutes. During this time, a warning message will be displayed and no action is needed from you.

9. After the recovery session is completed, there will be no video, and your computer will automatically

turn off.

10. Repeat step 1 through step 4.

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

12. Reconnect any cables that were disconnected and reinstall the PCI card if removed.

13. Close the computer cover and reconnect any cables that were disconnected.

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

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