Question Having issues with newly built pc. (Auto power off and screen artifacts).

Oct 29, 2019
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Specs:

XFX RX 580

Ryzen 5 3600.

EVGA 600W PSU

Corsair 16 GB 3200mhz

So I built a pc around 3 weeks ago and all of a sudden I am having problems. Sometimes I get no display on startup and sometimes i get artifacts on startup where it won’t boot without crashing. When using it on desktop or gaming, I get artifacts that cover the screen and then the pc crashed and reboots. I think it might be a problem with the psu and the gpu is not getting enough power. I have updated and reinstalled the drivers. I don’t think it’s a ram problem because I booted with each stick and got artifacts and a reboot after about a minute of use.
Also when trying to boot, the pc turned off and on multiple times before the fans start to spin consistently after pressing the power button.

I am thinking about getting my money back on the psu and see if the problem keeps happening. Any help would be appreciated!