Computer Crashing in Various Ways

[Pot Newman]

So my old computer had a problem with varying crashes. It would blue screen at random times, it would freeze, it sometimes wouldn't start-up, and it would notify me that my overclocking failed, although I wasn't overclocking. Strange enough, my computer wouldn't crash at all at my friends' homes; it only crashed once, after hours of use. Because of this, I went ahead and purchased some new parts, and upgraded my PC. It purchased a new case, motherboard, and CPU.

 

Getting my new build up and running was hard, and while trying to install my new drivers without wiping windows, I got a blue screen. So, I did a clean install of Windows 7, installed all of my drivers, and all was well. However, I did receive another blue screen, due to another overclocking failure, but that was resolved by setting the BIOS to its default settings. I was able to play a very simple game for a few hours, simple as in, it doesn't stress my components much. I then switched to a more intense game, and it froze, no blue screens or anything, and after hitting the reset button, I was in a reboot loop. The computer wouldn't even start up, it would try, fail, and try again. After stopping the loop however, it would start up fine.

 

I need to know wha1t may be causing this, and how I could possibly fix it. I'll be getting a new GPU next month, if that's the problem, and in case it's important, I'll list my specs below.

I will try to update this if I get more crashes, because I believe there will be more, and I believe they will vary.

 

GPU: MSI GTX 760 OC 2GB

CPU: i7 4790k

RAM: Corsair XMS3 8 GB (2x 4GB)

PSU: Corsair Enthusiast Series 650-Watt 80 Plus Bronze Certified

Motherboard: Asus Z97-Pro (Wifi-AC)

Chasis: Corsair Carbide 500r

CPU Cooler: Cooler Master Hyper 212 EVO

HDD's; Western Digital Cavier Black 2TB/ Blue 500GB