Question Games are flawless then crash in 5 minutes ?

[Tragnarok13]

Cpu components.
Cpu- Intel I7-9700k
Motherboard- Msi Mpg z390 gaming edge ac (bios date is 06-11-2020)
Gpu- MSI Gaming GeForce RTX 3060 12GB GDDR6
Power supply- 750w.

Games work great for 5 min or so it will suddenly crash and force close (sending me back to desktop).
cpu % is around 30-50.
GPU % is around 30-50
Power is like 60ish W.
Im at a total loss on what to do. Any suggestions?

 

[Phillip Corcoran]

"Power supply- 750w "

Make, model and approximate age ?

 

[geofelt]

Failure after a time smacks of a heat issue.
What is the make/model your cpu cooler and how well is it functioning?
What is the make/model of your case and fan arrangement?