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Introduction
The system’s basic input/output system (BIOS) records basic system operating parameters,
such as the amount of memory, the boot sequence, and the type of video display. The
operating parameters are set in the BIOS before shipment. The BIOS is stored in flash
erasable-programmable memory (EPROM) on the system board, and reads the system
parameters in the system’s complementary metal-oxide semiconductor (CMOS) random-
access memory (RAM). When you power off the system, a lithium battery provides power to
CMOS RAM to retain the operating parameters. Each time you power on the system, the
BIOS uses stored parameters to configure the system.
The BIOS Setup program, which is also stored in the flash EPROM on the system board,
allows you to manually change the system operating parameters. The BIOS Setup program
can also be accessed by the user during the system’s power-on self test (POST).
To run the BIOS Setup program, press
DELETE at the appropriate time during system boot.
BIOS Setup contains the following menus:
Types of Setup
Description
Standard CMOS Sets time, date, hard disk type, types of floppy drives, and boot sector
virus protection.
Advanced CMOS Sets system boot sequence, disk access,
NUM-LOCK key status, PS/2
mouse support, primary display, password, and other parameters.
Advanced Chipset Sets chipset-specific options and features.
Power Management Controls power conservation options.
PCI/Plug and Play Sets options related to the PCI bus and Plug and Play options.
Peripheral Controls input/output (I/O) controller-related options.
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