Mini pc crashes and restarts when playing game

Sometimes the PC also force restarts, but the last few times the game just turns off out of nowhere, often during a loading screen. 

I thought it was an overheating issue at first, but now the temperature is fine and it still happens. I play the newest patch update, and with DLC and CC. I tested it and the game still crashes without CC.

Any help is greatly appreciated, I have no idea why this is happening.