Adjusting the Hardware Functionality Using the BIOS

Current BIOSes have interfaces allowing you to make changes such as:

Date and Time
Boot Sequence
System and Hard Drive Passwords
Restore the BIOS to the Default Configuration
Turning on or off modular add-on devices
Adjusting LCD Brightness (on laptop computers)
Adjusting the Hard Drive Noise Level
Adjusting the number of cores the processor is using and the speed they are functioning


Notice:
Incorrectly changing BIOS settings may leave the computer in a state in which the operating system no longer starts. We therefore recommend that you record the original BIOS settings before you modify them.

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