Computer Crashes upon Loading a Lot

RetroNuva10

Prominent
May 25, 2017
2
0
510
Around December of last year (roughly 11 months after I built my PC), I started getting rare crashes while playing games. It usually would happen when, after playing for a while, I entered some different area in the game (usually having a load screen) that has to load a lot of stuff. This happened occasionally with Overwatch, after I would play, let's say, my 6th match. Since it had been 11 months since I built the PC, I figured the problem was simply there being dust in the case.

For the next few months, the problem persisted, slowly lowering the span of time between crashes. Eventually, I at last cleaned out my PC. However, this didn't fix it. I then figured it was overheating. So, I checked the BIOS after crashes, but they were nearly always around 40 Celsius degrees. I installed EVGA Precision XOC to monitor temperatures and modify fan speeds, but that was low as well. I even bought an extra case fan and ramped up the RPM on every fan that I could, but to no avail. Just to make sure for certain that it isn't overheating, I opened up the side and put a heavy-duty fan there (for troubleshooting purposes). However, even that at max speed, it doesn't affect the crashing at all.

At this point, every time I load Overwatch, it crashes roughly half a second after the menu loads. The crash happens suddenly with no BSOD, and it seems like the entire PC just shuts off.

(And before someone asks; No, it is not just Overwatch that causes this. Yooka-Laylee and other graphically taxing games also cause these same crashes)

Here are my specs:
Motherboard: MSI Z97 PC MATE
CPU: Intel Core i5-4460 Haswell Quad-Core 3.2 GHz
GPU: EVGA GeForce GTX 960 - 1.22 GHz Core
RAM: (Two) G.SKILL Ripjaws X Series 16GB
SSD: SanDisk Ultra II 480GB
Power Supply: EVGA 120-G1-0650-XR 80+ GOLD

I have also unplug-and-replugged: the GPU, both RAM, and the SSD.
 

RetroNuva10

Prominent
May 25, 2017
2
0
510
UPDATE:

So, I bought an EVGA 120-G2-0650-XR and tried it, and that fixed it!! And thanks to EVGA, the warranty of the faulty PCU is still active! So, the problem was coming from the power supply.