With Windows 7 improved boot times, a bomb can completely recover from a blue screen before it hits the ground! I hear they tried to use a mac but when it came to installing new ram they would have had to send it back to apple, and they had already screwed it into the bomb by then and Apple have a strict policy on using their computers as weapons.
Don't the 'baddies' in films always use windows based computers. And the 'goodies' always use macs. Except in South Park, in the film, with Windows 98,