I came home and my idiot roommate managed to "blow up" a perfectly working tower. He wanted to have wifi so he went and slapped a lynksys wireless PCI card I had laying around into a old Dell Dimensions 8400 Desktop I loaned him for school work and now the damn thing powers on but nothing shows up on the monitor.
And he doesn't know squat about computers to begin with so I'm even surprised he knew where to put the card!