Computer Randomly Shuts Off/Reboots

I recently just built a desktop and noticed that it would randomly turn off and reboot with no pattern to it. Sometimes happens a few times a day or none at all. Temperatures idle at the mid 30*C and reaches up to about low 40's when i game. I've been told that HWMonitor is pretty inaccurate but i notice that my +12v is at 8.1V which sorta worries me. Any help would be appreciated, thank you.

VIDEO- GeForce GTX 660 2GB
PSU- HX 1000W Corsair
CPU- i7-3770k
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More about computer randomly shuts reboots
  1. that is strange. Usually a random shut off occurs from a bad PSU but..your PSU is a good quality unless you got a bad one out of the shipped batch
  2. Try other CPU temp monitors, maybe even monitor your GPU temps (my GTX 465 when it had it's stock cooler would overheat and shutoff during hot weather).

    Make sure all connections are nice a tight, and if you're worried about the PSU, get it tested (there are self-testers but you would have to buy them). Or try a known-working PSU, a 1000W PSU is way overkill for a system like this.
  3. I downloaded Speedfan and kept an eye out for the temps but my GPU would just idle at 24 to 25. I also went back into my computer to check on the wires and everything it as tight as can be. I'm sending in my PSU for a RMA and hopefully that would solve my problem.
  4. Also you should get CPU-Z. will help confirm your voltage
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