Okay, so tonight my friend got on his computer. Doing simple things such as msn messenger, a view internet thingies, windows media player, and burning some cds when his computer all of a sudden froze restarted but everytime he restarts at one point you see a blue screen of death really quick for a split second and the boot starts up again...i unplugged some components on the inside and its not the memory, cd rom drive and it shouldn't be the motherboard. I'm thinking something went wrong with the PSU or the hard drive...is it those two things or something else?