computer out of the blue just doesnt start up one day. anyone have any ideas on what could have gone wrong? i think it might have been the psu taking a crap. comp specs: 3200+ 64 1gig ddr400 480w antec psu 250g hd 6800gt keyboard lights up when i flip the power switch on but when i go to turn the comptuer on the fans start turning for a split second then stop. then nothing.