So, I recently bought a new motherboard after my old one failed. It finally booted and I was so happy, I opened GTA and walked 2 steps, then my PC restarted. After hours of tech support help form the mobo manufacture we discovered the gpu crashes once it has a small load taking the whole system with it. I even underclocked it. It lasted longer but still I had the same result but with worse performance.
System Config:
CPU: Core i7 7700K (Not Overclocked)
RAM: 2 sticks of DDR4 8gb 3000hz Corsair
MOBO: ASUS ROG STRIX H270F GAMING
GPU: Geforce gtx 1060 6gb (Underclocked: previously overclocked)
PSU: 700 watt BEAST gaming ATX
Sorry if this is a repeat post, not sure if this is a common problem! Thanks for the help!
Just let me know if you need anything else!