So I kinda figure it’s either the PSU or one of my hard drives, but what the issue is is that me PC first makes a click sound (as if I physically shut it down), then restarts some time after.
When it restarts it makes a bit noisier click sound, same as the power button switching does.
I have verified it’s not ghosts or little green men. I can’t say for certain about Martians.
It’s just weird. I’ll be unplugging both HDD’s today to see if it goes away. Then one-by-one plug things in/out.
Sounds like the overcurrent protection is tripping on the PSU
Oh, I forgot to make any update to this case.
The culprit was Windows 10.
I don’t know why, or how, but every other installed OS works just fine.
Asrock BIOS update has been wonky though, it got from stable EXPO to not handling EXPO at all.