So PC restarts only when playing Far Cry Primal on Uplay when the game is loading from using Fast Travel. Does not happen all the time but enough to make it unplayable. PC does not restart under any other conditions during more demanding games. Have searched the net extensively and cannot find anything that helps. Have used DDU with no luck. PSU is proprietary and cannot be changed as it has a custom connection to the power button. W10 RTX 2060 S 500W PSU Edit: Spoke too soon, now it is restarting when loading initial save and just out of the blue? Tested RAM and seems ok, fast start is not enabled, if it is an outdated BIOS am afraid to update it. Why does it happen for just Far Cry Primal, Far Cry 4 works no problem? Event Viewer - keyword: (70368744177664),(2) initiated the power off for the following reason: Other (Unplanned) Reason Code: 0x0? UPDATE 3/12/2020: Finished and uninstalled FCP, then restarts again on different game. Added all game files including GOG Galaxy 2.0 to Avast Exclusion list and have not had a restart in over 2 weeks. I don't know if Avast/GOG was the issue but am noting this as it could help others.