PC randomly freezes for about 5 seconds and then restarts

[Rockysaber7129]

My PC lately has been forming a habit of randomly freezing and then restarting itself. When this occurs I typically hear a buzzing noise in my headset for the 5-10 seconds it is frozen until it restarts. The confusing part is that it always just restarts straight to windows and never blue screens. It seems like it happens more often when gaming but I feel like I recall it happening while just being in discord as well. At first I thought PSU because I was running an overclocked 9600k and a 5700xt on a Corsair CX500 but I just bought a Corsair RMx850 and it is still doing it.

If it helps, system specs are:

9600k OC'd to 5GHz (I have tried turning off overclock and it didnt fix the issue)

Gigabyte Z390M Mobo

16gb ram

5700xt

Corsair RMx 850

 

Any suggestions as to what the problem could be would be great. 

Thanks