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The BIOS is a program located on a Flash Memory on the motherboard.  This program is a 
bridge between motherboard and operating system.  When you start the computer, the BIOS 
program gain control.  The BIOS first operates an auto-diagnostic test called POST (power 
on self test) for all the necessary hardware, it detects the entire hardware device and 
configures the parameters of the hardware synchronization.  Only when these tasks are 
completed done it gives up control of the computer to operating system (OS).  Since the 
BIOS is the only channel for hardware and software to communicate, it is the key factor for 
system stability, and in ensuring that your system performance as its best.    

In the BIOS Setup main menu of Figure 3-1, you can see several options.  We will explain 
these options step by step in the following pages of this chapter, but let us first see a short 
description of the function keys you may use here: 
•  Press <Esc> to quit the BIOS Setup. 
•  Press ↑ ↓ ← →  (up, down, left, right) to choose, in the main menu, the option you want 

to confirm or to modify. 

•  Press <F10> when you have completed the setup of BIOS parameters to save these 

parameters and to exit the BIOS Setup menu. 

•  Press Page Up/Page Down or +/– keys when you want to modify the BIOS parameters 

for the active option.  

 

Power on the computer and by pressing <Del> immediately allows you to enter Setup.   
If the message disappears before your respond and you still wish to enter Setup, restart the 
system to try again by turning it OFF then ON or pressing the “RESET” button on the 
system case.  You may also restart by simultaneously pressing <Ctrl>, <Alt> and 
<Delete> keys.  If you do not press the keys at the correct time and the system does not 
boot, an error message will be displayed and you will again be asked to  

Main Menu 
The on-line description of the highlighted setup function is displayed at the bottom of the 
screen.   
Status Page Setup Menu/Option Page Setup Menu 
Press F1 to pop up a small help window that describes the appropriate keys to use and the 
possible selections for the highlighted item.  To exit the Help Window, press <Esc>.