Basically, I just put together a "new" rig and problems started to arise. Sometimes when I start to play a game or after a while, the pc shuts itself off and then turns back on. I have tried temperature monitoring apps and before those crashes the cpu never goes above 70c. I have tried AIDA 64 and had my cpu at 80c and drawing about 640 watts from my PSU. (I do have a 650 watt PSU.) But, during these stress tests the pc just ramps up their speed and that's it, the pc never crashes or anything. Any ideas?