Computer restart while playing heavy games

deluxe7

Reputable
Nov 10, 2014
6
0
4,510
My Specs:
CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor ($299.99 @ Newegg)
Motherboard: Gigabyte GA-Z97X-SLI ATX LGA1150 Motherboard ($99.99 @ Newegg)
Memory: Crucial Ballistix Sport 8GB (2 x 4GB) DDR3-1600 Memory ($44.49 @ Newegg)
Storage: Crucial MX100 256GB 2.5" Solid State Drive
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($47.99 @ Newegg)
Video Card: PowerColor Radeon R9 290 4GB PCS+ Video Card
Case: Fractal Design Define R5 (Black) ATX Mid Tower Case ($89.99 @ Newegg)
Power Supply: Cooler Master 550W 80+ Bronze Certified Semi-Modular ATX Power Supply ($75.98 @ Newegg)

So I'm replaying Witcher 3 which I had finished before but now I'm playing with a new version and enabled console. First +20hours~ of the rerun there was no problem but then afterwards my computer randomly restarts while playing. It wasn't a BSOD or some kind of error my computer just literally restarts.

The restarts only happens while playing the game it restarts randomly, sometimes I can play for hours sometimes it restart right after I the game (doesn't restart on Menu only in-game).
My Temperatures is quite high while playing but as I said I played the game before and there was no problem. My CPU temp is about 70 - 85 Celcius and GPU is about 65 - 80 Celcius.

I did some research on how to fix this but nothing work. Things tried to fix it:
- Reinstall GPU software
- disable System failuire automatic restart
- Reinstall the game


EDIT;!!!! UPDATE TO THIS http://www.tomshardware.co.uk/answers/id-2872509/kernel-power-event.html