Any of you previous Dell Owners run into something similar? I've never owned a Dell Desktop and I'm at my friend's house trying to set it up. The dell runs fine when nothing is plugged in. The second I plug in any PCI device it won't boot. Instead the fan blows full-blast and nothing happens. No post. Namely I am tyring to plug in two ATi 9250 PCI cards, but no luck. I'm stuck...no clue what might be going on?