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B. BIOS Settings

Appendix B. BIOS Settings

The BIOS, or Basic Input-Output System, is the program (stored in a chip on your motherboard) responsible for booting your computer and starting your operating system. It also handles the flow of data between the operating system and your peripherals (keyboard, mouse, hard disk controller, video adapter, etc.). Your BIOS has a special “setup” screen that allows you to customize its settings to enable or disable motherboard features, improve performance, and, sometimes, fix problems.

Tip

The BIOS setup is usually accessed by pressing a key—such as Del, F2, or Esc—immediately after powering on your system and before the initial beep. The screen that appears before the Windows logo typically identifies the key you need to press to enter setup; consult your computer’s manual if you need further help.


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