So a while ago my computer would full on die (power off) after like 30 minutes of gaming on games like Battlefield 2, Mass Effect 2, and some others. I ended up replacing the power supply with a 700w corsair and no more problems. Until a few days ago I noticed after several hours of gaming (I would say 4) the computer would die again! I have no idea at this point what it is. It seems soo unlikely that its PSU considering this one is BRAND new. Any ideas though?