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6. Follow the instructions on the screen to complete 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 commonly called Boot-block Recovery.
10. Turn the computer off and back on again. The recovery session begins.
54
User Guide
Note: If you want to change the machine type/model, press Y when prompted.
Type in the machine type/model and then press Enter.
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 open the computer cover.
Refer to "Opening the computer cover" on page 14.
3. Access the system board. Refer to "Accessing the system board components
and drives" on page 16.
4. Locate the Clear CMOS /Recovery jumper on the system board. Refer to
"Locating parts on the system board" on page 11.
5. Remove any cables that impede access to the Clear CMOS/Recovery jumper.
6. Move the jumper from the standard position (pin 1 and pin 2) to the
maintenance position (pin 2 and pin 3).
7. Reconnect any cables that were disconnected and reinstall the hard disk drive
if removed.
8. Close the computer cover and reconnect the power cords for the computer
and monitor to electrical outlets. Refer to "Completing the parts replacement"
on page 37.
9. Turn on the computer and the monitor. Insert the POST/BIOS update (flash)
disc into the optical drive.
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