Computer Shuts off Without warning? PSU or Motherboard?

Antimax14

Reputable
Nov 4, 2014
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I recently built a new computer. Here is my specs

AMD FX 8320 8 Core
MSI r7 260x OC Edition
PNY 4GB 1333 RAM
1TB HARD DRIVE
THERMALTAKE TR2 600W PSU
ASrock 980DE3/U3S3


I was working on my computer trying to put the motherboard on the case. I was thinking why is the motherboard uneven and not fitting in the case. So I just screw some of the motherboard holes, and force screw by pushing the motherboard to the case. But the next day I realized that I didn't put the standoff, which is why it was uneven and wouldn't fit on the case. I don't know if I destroyed the back of the motherboard. There are some bent pins, but I think it was already there when I got the motherboard. The pins are not touching anything. I also checked that some of the pins are scratched, I will post a picture on the bottom. But when I boot everything up, it turns on, tried to install windows 7 it works until it tells me to restart, and when It was doing something on the registry after it restarted, the computer shuts itself down, and I have to reset the installation, and then same thing happens. So I tried another hard drive with pre-installed windows 7, and works, but when I go to chrome, my computer shuts down, when I go to catalyst center, my computer shuts down, when I went to play gta sa, on the psu I hear sort of an electrical sound, and then it shuts down. When I played slender the arrival on ultra, it shuts down 5 minutes after playing, not instantly. It is not the cpu or gpu's fault since I stress test them 10 minutes each on 100% load, and computer never shuts down. But whenever the computer shuts down, I always here some sort of electrical sound inside the psu... I'm not sure if my motherboard is failing or my psu is bad. I'm planning to buy Corsair CX500, it has 38a on its +12v rails. But thermaltake tr2 only has 23a on its +12v rails. What do you thing is the problem?


IDK if that was already there or I scratched it from the case.

http://imageshack.com/a/img913/2152/bNYsX6.jpg
http://imageshack.com/a/img904/3017/NebSVr.jpg
http://imageshack.com/a/img673/5977/YGeodP.jpg