Updating (Flashing) Bios From Your Operating System; Recovering From A Post/Bios Update Failure - Lenovo ThinkCentre A62 3656 User Manual

5. Type in the seven character serial number of your computer and then press
6. When prompted to change the machine type/model, press Y.
7. Type in the seven character machine type/model of your computer and then
8. Follow the instructions on the screen to complete the update.

Updating (flashing) BIOS from your operating system

Note: The Web page content (including the links referenced in the following
1. Go to:
2. Locate the Downloadable files for your machine type as follows:
3. Print these instructions. This is very important because they are not on the
4. From your browser, click Back to return to the list of files. Carefully follow the

Recovering from a POST/BIOS update failure

If the 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 which is commonly called Boot-block recovery.
56
User Guide
Enter.
press Enter.
procedure) is subject to change because of the constant improvements made
to the Web site.
http://www.lenovo.com/support
a. In the Enter a product field, type your machine type.
b. Click Go → Continue → Downloads and drivers.
c. Under the BIOS category, click the Flash BIOS update.
d. Click the TXT file that contains the installation instructions for the flash
BIOS update (flash from the operating system version).
screen after the download begins.
printed instructions to download, extract, and install the update.
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 computer cover" on page 14.
3. Access the system board. See "Accessing the system board components and
drives" on page 15.
4. Locate the Clear CMOS/Recovery jumper on the system board. See "Locating
parts on the system board" on page 11.
5. Remove any cables that might prevent your access to the Clear
CMOS/Recovery jumper.
6. Move the jumper from the standard position (pin 1 and pin 2) to pin 2 and
pin 3.
7. Reconnect any cables that were disconnected. See "Completing the parts
replacement" on page 37.
8. Reinstall the computer cover and reconnect the power cords for the computer
and monitor to electrical outlets.
9. Do one of the following:
v Insert the POST/BIOS update (flash update) diskette into the diskette drive
and turn on the computer and the monitor.