Step By Step 3 - How to destroy your computer! - If a flash BIOS is "flashed" with the wrong data - preferably a BIOS for a completely different motherboard, or, if the flashing software will accept it, even some randomly selected file; an MP3 of William Shatner's "Mr Tambourine Man" is ideal - the motherboard will, upon restarting, utterly fail to do anything useful until its BIOS chip is physically removed and re-burned with correct data.