i just got a 9850 and the biostar 790gx powered by antec bp550 plus 550w psu... i had it running 2.8-3.0 on stock everything just bumping multi up, but any higher and it would reboot during windows loading. i set the multi to 16 for 3.2 with 1.4vcore and it went into windows and about 5 minutes into prime flashed a quick blue screen and restarted so i bumped vcore to 1.43 and this time it primed for about 10 minutes and same thing, quick blue screen and it reboots. so i bump vcore to 1.47 and it primes for awhile, temps never over 61c and about 20 minutes in the pc just shuts off with no sound or smoke or anything, and now will not turn on at all... i tried resetting cmos, popped battery out, etc. and get nothing when i try to power it on. you guys think this sounds like mobo, cpu, psu??