ASUS P3-P5G43 User Manual

BIOS setup program

Chapte 4: BIOS setup
•  The default BIOS settings for this motherboard apply for most conditions 
to ensure optimum performance. If the system becomes unstable after 
changing any BIOS settings, load the default settings to ensure system 
compatibility and stability. Select the Load Setup Defaults item under the 
Exit Menu. See section “4.8 Exit Menu.”
•  The BIOS setup screens shown in this section are for reference purposes only, 
and may not exactly match what you see on your screen. 
•  Visit the ASUS website ( to download the latest BIOS file 
for this motherboard.
BIOS setup program
This motherboard supports a programmable firmware chip that you can update 
using the provided utility described in section “2.1 Managing and updating your 
Use the BIOS Setup program when you are installing a motherboard, reconfiguring 
your system, or prompted to “Run Setup”. This section explains how to configure 
your system using this utility.
Even if you are not prompted to use the Setup program, you can change the 
configuration of your computer in the future. For example, you can enable the 
security password feature or change the power management settings. This 
requires you to reconfigure your system using the BIOS Setup program so that the 
computer can recognize these changes and record them in the CMOS RAM of the 
SPI chip.
The firmware chip on the motherboard stores the Setup utility. When you start up 
the computer, the system provides you with the opportunity to run this program. 
Press <Del> during the Power-On Self-Test (POST) to enter the Setup utility; 
otherwise, POST continues with its test routines. 
If you wish to enter Setup after POST, reboot the system by doing any of the 
following procedures:
•  Restart using the OS standard shut-down procedure.
•  Press <Ctrl>+<Alt>+<Del> simultaneously. 
•  Press the reset button on the system chassis. 
•  Press the power button to turn the system off then back on.
Using the power button, reset button, or the <Ctrl>+<Alt>+<Del> keys to 
force reset from a running operating system can cause damage to your data 
or system. We recommend to always shut-down the system properly from the 
operating system.
The Setup program is designed to make it as easy to use as possible. Being a 
menu-driven program, it lets you scroll through the various sub-menus and make 
your selections from the available options using the navigation keys.