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1. From your browser, type http://www.lenovo.com/think/support in the
address field and press Enter.
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 cover. See
“Removing the cover” on page 10.
3. Locate the Clear CMOS/Recovery jumper on the system board. See
“Identifying parts on the system board” on page 12.
4. If necessary, refer to Installing adapters to remove any adapters that impede
access to the Clear CMOS/Recovery jumper.
5. Move the jumper from the standard position (pins 1 and 2) to pins 2 and 3.
6. Replace the cover. See “Replacing the cover and connecting the cables” on
page 25.
7. Reconnect the power cords for the computer and monitor to electrical outlets.
8. Insert the POST/BIOS update (flash) diskette into drive A, and turn on the
computer and the monitor.
9. After the update session is completed, there will be no video and the series of
beeps will end. Remove the diskette from the diskette drive, and turn off the
computer and monitor.
10. Repeat steps 2 through 4.
11. Move the Clear CMOS/Recovery jumper to its original position.
12. Replace any adapters that were removed.
13. Replace the cover and reconnect any cables that were disconnected.
14. Turn on the computer to restart the operating system.
32 User Guide