Updating (Flashing) Bios From A Disc; Updating (Flashing) Bios From Your Operating System; Recovering From A Post/Bios Update Failure - Lenovo ThinkCentre A58 Hardware Maintenance Manual

Updating (flashing) BIOS from a disc

This section provides instructions on how to update (flash) BIOS from a disc.
System program updates are available at:
http://www.lenovo.com/support
To update (flash) BIOS from a disc:
1. Turn off your computer.
2. Repeatedly press and release the F12 key when turning on the computer. When
3. In the Startup Device Menu, select the optical drive you want to use as the
4. Insert the disc into the optical drive and press Enter. The update begins.
5. When prompted to change the serial number, press N. If you want to change
6. When prompted to change the machine type/model, press N. If you want to
7. Follow the instructions on the screen to complete the update. After the update

Updating (flashing) BIOS from your operating system

Note: Because Lenovo makes constant improvements to the Web site, the Web
To update (flash) 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:
3. Print these instructions. This is very important because they are not on the
4. 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 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.
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the Startup Device Menu opens, release the F12 key.
first boot device.
the serial number, press Y when prompted. Type in the serial number and then
press Enter.
change the machine type/model, press Y when prompted. Type in the machine
type/model and then press Enter.
is completed, remove the disc from the optical drive.
page contents are subject to change without notice, including the contents
referenced in the following procedure.
a. In the Enter a product number field, type your machine type and click Go.
b. Click Downloads and drivers.
c. Select BIOS in the Refine results field to easily locate all the BIOS related
links.
d. Click the BIOS update link.
e. Click the TXT file that contains the instructions for updating (flashing) BIOS
from your operating system.
screen after the download begins.
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. Refer to "Removing the computer cover" on page 90.