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Question PC Shuts Off Immediatly After Turning On

artavasdes

Prominent
Nov 28, 2019
121
8
615
I recently built a new pc, the specs are as follows:

CPU: ryzen 7 3700x
Mobo: Gigabyte X570 wifi pro
PSU: Thor Platinum 1200 watt Asus
Gpu: 5500xt
RAM: Crucial Ballistix 4x 8gb 4000mhz

When I press the power switch, it turns on for a millisecond then shuts off. Evey time I try to turn it on it does this. The PSU was from another computer I had and it was working fine. I even tried another mobo and cpu to see if the PSU was the problem and I have the same problem.
Thanks in advance for the help.