When your computer fails to start up, you can use a CD or DVD to start it. This is called booting from a CD or DVD.

Your computer’s motherboard must support this feature. To find out if your motherboard supports booting from a CD or DVD, check the motherboard’s documentation or contact the manufacturer.

If your motherboard supports booting from a CD or DVD, you must configure your computer to do so. To do this, you must enter the computer’s BIOS (basic input/output system).

The BIOS is a program that is stored on a chip on the motherboard. When you …