PC crashes while playing

[teemuhax]

Hey guys,

I've been having issues with my PC randomly crashing while playing WoW. The crash is similar to just pulling the plug on my computer, it just instantly shuts down.
I feel like this started happening as I installed MSI Afterburner and overclocked my GPU a bit, at first it ran fine for weeks, while all of a sudden I started getting random shut downs.
I figured maybe something was wrong with my overclock so I decided to stress test it more, however nothing happened even though I had it running the whole night.
When I check event viewer it seems to always be the same Event ID 41 Kernel-Power System, google has a ton of random issues causing this and even more ways to fix it, having tried some and still not being able to fix it I come to you.
I feel like I don't get crashes as often if I don't have an overclock on, but today when I tried it without any overclock (aside from a custom fan curve), it crashed a few times during gaming.
Does anybody have any ideas what might actually be causing this? 

 

Also, I've tried to keep an eye on my temperatures while playing, and I don't really reach any high degrees, only on my GPU if I don't have the custom curve on.

Here are some of my specs:

PSU: Corsair 750W 

Mob: Gigabyte Z97P-D3
CPU: i7 4790k
GPU: KFA2 GTX 980
RAM: Corsair 16 GB

OS: Win 10