Hey everyone, building a new system here w/ a 3.4Ghz P4, ASRock 775i65Gv MoBo, 1Gig of Pc-3200 Ram, 450 Watt Rosewill Power Supply. My question is, why does the machine shut off 3 seconds after it turns on? I can press F2 to go into setup, and I can tell it responds because it says entering setup, but shuts off immediately. No beeps, nothing. Do I have a bad MoBo?