Lenovo ThinkCentre M70z Посібник користувача - Сторінка 33

This chapter provides information about updating the POST and BIOS, and how to recover from a POST

and BIOS update failure.

This chapter contains the following topics:

•

"Using system programs" on page 25

•

"Updating (flashing) the BIOS from a disc" on page 25

• "Updating (flashing) the BIOS from your operating system" on page 26

System programs are the basic layer of software built into your computer. System programs include the

POST, the BIOS, and the Setup Utility program. The POST is a set of tests and procedures that are

performed each time you turn on your computer. The BIOS is a layer of software that translates instructions

from other layers of software into electrical signals that the computer hardware can execute. You can use

the Setup Utility program to view or change the configuration settings of your computer. See Chapter 4

"Using the Setup Utility program" on page 21 for detailed information.

Your computer system board has a module called electrically erasable programmable read-only memory

(EEPROM, also referred to as flash memory). You can easily update the POST, the BIOS, and the Setup

Utility program by starting your computer with a system-program-update disc or running a special update

program from your operating system.

Lenovo might make changes and enhancements to the POST and BIOS. When updates are released, they

are available as downloadable files on the Lenovo Web site at http://www.lenovo.com. Instructions for using

the POST and BIOS updates are available in a TXT file that is included with the update files. For most

models, you can download either an update program to create a system-program-update disc or an update

program that can be run from the operating system.

This section provides instructions on how to update (flash) the BIOS from a disc.

Note: You can download a self-starting bootable disc image (known as an ISO image) with the system

program updates to create a system-program-update disc. Go to:

http://www.lenovo.com/support

To update (flash) the BIOS from a disc, do the following:

1. Turn off your computer.

2. Repeatedly press and release the F12 key when turning on the computer. When the Startup Device

Menu opens, release the F12 key.

3. On the Startup Device Menu, select the desired optical drive as the startup device. Then, insert the disc

into this optical drive and press Enter. The update begins.

4. When prompted to change the serial number, it is suggested that you do not make this change by

pressing N. However, if you do want to change the serial number, press Y, then type in the serial number

and press Enter.