Question PC shuts down randomly, ram and power button stay on


Sep 27, 2019

I recently built a new PC and I am having an odd issue.
First of all: it only seems to happen when I'm playing GTA 5 for some reason.
Second: I found this thread, which seems to have the same problem, but it feels unlikely that my issues are power supply related.

What happens is: I'll be playin a game, and out of no where the PC shuts down but the RAM and power button lights stay on.
Whenever I try pressing/holding down the power button: nothing happens.

In the thread I just linked the OP mentions it was a PSU problem, but the PSU I have is barely a couple months old and it's very much capable of handling my system.

If anyone has an idea as to what it COULD be next to a PSU problem, I'd love it hear it. If this is a PSU problem... I'm not sure what I'm gonna do with my life :p

Full system specs:
CPU: Ryzen 9 5900X (cooled by corsair H100i)
MOBO: Asus TUF X570 Gaming-PLUS wifi
GPU: Gigabyte RTX 2080 Ti GAMING OC 11G
PSU: Corsair HX1000i Platinum
RAM: 4x16GB corsair vengeance @ 3200Mhz
SSD: Samsung 860 EVO 1TB

first time i built a system with this motherboard I managed to connect the front panel connectors the wrong way, which inevitably caused problems, but those are fixed now. I had the board sent to ASUS for repairs.