My PC restarts when I open games

Specs:

3070 Suprim X

5800x

32gb trident z neo 3600 cl16

Corsair rm750x

I just recently quitted mining on my new computer that i built in December. Since then when opening some games (Watch Dogs 2 and Enlisted it doesn’t happen with Assasin’s Creed Odyssey or Origins) my pc just reboots sometimes instantly after loading the map and some times after 2 minutes and sometimes even hours after i opened the game (the hour one is quite rare).

I have tried Cinebench and 3dmark and those run fine without restarts. with normal temps (Noctua U-12S).

In event viewer it said this after the restart: A fatal hardware error has occurred.

Reported by component: Processor Core

Error Source: Machine Check Exception

Error Type: Bus/Interconnect Error

Processor APIC ID: 10

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If you have any idea what could be the problem please let me know.