What Kind of Virus Could Damage BIOS ??

This is how a person could damage the BIOS, but I suggest not to do  it on your friend's PC..

1. Copy your fake BIOS file to a USB drive. It is best if this file is a BIOS for a different model of motherboard, but some older BIOS utilities may erroneously accept any file, even media or document files. Leave the USB drive connected.
2. Restart your computer. Before the computer lots Windows, look for the message reading "Press [Key] to enter setup." This key is usually Delete or F2, but this may vary between computers. Press this key quickly to enter BIOS. In case you do not press this key quickly , Windows will load. If this happens, basically repeat this step.
3. Type the full name of the file on your USB drive in to the command prompt window. Press "Enter." The command prompt will ask in case you need to update your BIOS. Press the "Y" key. The BIOS will now be rewritten with the fake BIOS file. If this is thriving, your motherboard will no longer be operable.
4. Select the "Boot" tab using the arrow keys. Find your USB drive within the list of boot devices. Use the arrow keys to highlight this drive. Press the appropriate key to save your changes & exit (the proper key to do this will be indicated on the bottom of your screen). Your computer will now restart & launch the command prompt window.