Question Computer is randomly restarting AFTER gaming for a long time?

[iWARDi]

Built this computer around two months ago. It was working fine for about a month then had to move it to a new location. After that is would randomly restart. It only restarts after gaming for a long time. Usually around 30 seconds after closing down the game. Temps seem to be fine.

 

[rgd1101]

full system spec? include make and model of the psu

 

[iWARDi]

Mobo: Msi MPG Z390M Gaming Edge Ac
CPU: i9-9900k
GPU: Gigabyte RTX 2060 Super
PSU: Corsair CX 750M
RAM: G.Skill Ripjaws V 32gb