I'll start by saying that this isn't really a problem, as my Dell 8400 is running normally, but I'm curious as to what could have caused this. I was running an audio file recording/editing program called Audacity, and tried to record some sound from a game. I set Audacity to record and started the game. The game began to run up then - BSOD! Then there was the sound of a fan starting up, and it just got faster and faster and faster until I got my finger to the power button to shut it down. It was like nothing I'd heard before on this PC. I booted up again and the computer started normally. I repeated the process and got exactly the same result. Has anyone else experienced anything similar? Google drew a blank. Thanks.