The BIOS (Basic Input Output System) controls communication between system devices such as the disk drive, display, and keyboard. It also stores configuration information for peripherals types, startup sequence, system and extended memory amounts, and more. Each BIOS version is customized based on the computer model line's hardware configuration and includes a built-in setup utility to access and change certain computer settings.
To access the BIOS Setup utility using a series of key presses during the boot process.
Turn off the computer and wait five seconds.
Turn on the computer, and then immediately press the Esc key/F1/F2/F10/F12 repeatedly until the Startup Menu opens. Key differs with the vendor.
Select the BIOS Setup Utility.
Following settings can be changed using BIOS setup utility.
- System Time/Date - Set the system time and date
- Boot Sequence - The order that BIOS will try to load the operating system
- Plug and Play - A standard for auto-detecting connected devices; should be set to "Yes" if your computer and operating system both support it
- Mouse/Keyboard - "Enable Num Lock," "Enable the Keyboard," "Auto-Detect Mouse"...
- Drive Configuration - Configure hard drives, CD-ROM and floppy drives
- Memory - Direct the BIOS to shadow to a specific memory address
- Security - Set a password for accessing the computer
- Power Management - Select whether to use power management, as well as set the amount of time for standby and suspend
Exit - Save your changes, discard your changes or restore default settings.
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