When i start up a game my pc restarts or just shuts off and i have to flip the PSU switch to make it turn back on. When i start up a game my pc restarts within a minutes. i don't have any thermal issue's i have my task manager and corsair link open to manage my thermals and usage of my GPU and CPU and noticed nothing abnormal. I run daily virus and cleanup scans with: 360 total security. Does anyone have any fixes for this issue or know any way to resolve this problem?
Specs:
CPU: i7 5820k(i had OC it before and yesterday i set the preset OC to 3.8ghz on easytune, but when i check today when the reboot issue happend it was setback to the default 3.6ghz)
GPU: EVGA GeForce GTX 980 4GB Superclocked 2.0
CPU cooler: Corsair Hydro H100i
Motherboard: Gigabyte GA-X99-Gaming 7 WIFI
Ram: 6x4GB DDR4 Corsair Vengence 2400mhz
PSU: Corsair RM850
OS: Windows 10