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Chapter 3 BIOS Setup

Chapter 3

Chapter 3 - BIOS Setup

Overview

The BIOS is a program that takes care of the basic level of communication between the CPU

and peripherals. It contains codes for various advanced features found in this system board.

The BIOS allows you to configure the system and save the configuration in a battery-backed

CMOS so that the data retains even when the power is off. In general, the information stored

in the CMOS RAM of the EEPROM will stay unchanged unless a configuration change has been

made such as a hard drive replaced or a device added.

It is possible that the CMOS battery will fail causing CMOS data loss. If this happens, you need

to install a new CMOS battery and reconfigure the BIOS settings.

Default Configuration

Most of the configuration settings are either predefined according to the Load Optimal Defaults

settings which are stored in the BIOS or are automatically detected and configured without

requiring any actions. There are a few settings that you may need to change depending on

your system configuration.

Entering the BIOS Setup Utility

The BIOS Setup Utility can only be operated from the keyboard and all commands are key-

board commands. The commands are available at the right side of each setup screen.

The BIOS Setup Utility does not require an operating system to run. After you power up the

system, the BIOS message appears on the screen and the memory count begins. After the

memory test, the message “Press DEL to run setup” will appear on the screen. If the message

disappears before you respond, restart the system or press the “Reset” button. You may also

restart the system by pressing the <Ctrl> <Alt> and <Del> keys simultaneously.

Note:

The BIOS is constantly updated to improve the performance of the system board;

therefore the BIOS screens in this chapter may not appear the same as the actual

one. These screens are for reference purpose only.

Legends

Scroll Bar

When a scroll bar appears to the right of the setup screen, it indicates that there are more

available fields not shown on the screen. Use the up and down arrow keys to scroll through all

the available fields.

Submenu

When ““ appears on the left of a particular field, it indicates that a submenu which contains

additional options are available for that field. To display the submenu, move the highlight to

that field and press <Enter>.

Keys Function

Right and Left arrows

Moves the highlight left or right to select a menu.

Up and Down arrows

Moves the hightlight up or down between submenu or ﬁ elds.

<Esc>

Exit to the BIOS Setup Utility.

+ (plus key)

Scrolls forward through the values or options of the highlighted ﬁ eld.

- (minus key)

Scrolls backward through the values or options of the highlighted ﬁ eld.

Tab

Select a ﬁ eld.

<F1>

Displays general help

<F2>

Pervious values

<F3>

Optimized defaults

<F4>

Saves and resets the setup program.

<Enter>

Press <Enter> to enter the highlighted submenu.

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Dfi HD630-H81 Manuel d'utilisateur Page 32

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