To reinstall Windows or run the LiveCD, the computer must be started from the optical disc drive. For this purpose, there is a BIOS system, which stores the basic settings of your computer hardware.
Instructions
Step 1
To boot from the CD, restart your computer and press the F2 or Del key when the BIOS screen appears (for more detailed information, see the instructions for the motherboard). After these steps you will enter the CMOS Setup section. If it doesn't work the first time, restart your computer again. The Del key often works on regular desktop computers, while the F2 key works on laptops. After starting the CMOS Setup system, find the Boot Sequence section in its menu. Depending on the BIOS version, this item may be located in different places.
Step 2
Then find the boot devices that you will use to boot from the CD. Typically, boot devices are referred to as Boot Device. Once you find this device, connect it to your hard drive, optical device, or disk drive. Usually, you yourself have to choose the device that will connect to the Boot Device. In some versions of CMOS Setup, all physical devices are displayed on the screen. And you will not need to search for them, you only need to select the desired device.
Step 3
Then you have to make sure that your chosen optical device is the main one. To do this, you need to change the order of settings, that is, set the highest priority to the drive (usually this is done by setting the name of your CD / DVD drive in the First Device field). Now insert the drive you want and press F10 and Enter. If the computer starts to restart, you did everything right. After restarting, the computer will immediately start reading information from the CD.
Step 4
When finished, be sure to restart your computer again. Then go to CMOS Setup again. Make the hard drive again take precedence over the optical drive (this is usually done by setting the name of your hard drive in the First Device field). Then save your changes by pressing F10 and Enter.
