PC restart while playing PoE1

I am having an issue while playing PoE 1. My PC suddenly restarts whether I'm on Stanard League or on the Secrets of the Atlas League. It only happens while playing PoE. :( I already tried upgrading my drivers and downloaded the new patch but still get the same issue.

The restart seems to be random. Sometimes I'm using the waypoint to to somewhere or I am in town. Sometimes it's while I'm killing monsters.