Question Is my GPU or PSU failing?

[Cheress]

I have a Gigabyte AMD RX 560, it's been working fine for the past years, but lately when gaming I've been having black screens/crashes, sometimes when it happens my GPU fan stops spinning, other components like other fans and everything are still working fine, eventually I have to manually restart my PC and when it boots up I can see some kind of flickering and stuff while it's doing it, but it boots fine, then I check the device manager and my GPU appears disabled. I tried updating the drivers but it's still having the same problem, not even on games with that much of visual stuff (like League of Legends).
I don't really know what to do, I know it can happen because of the GPU or the PSU, I've checked HWinfo and HWMonitor to check the voltages and temperature and they seem fine, I can't really tell the problem at this point.

My specs:
Thermaltake Smart 500W
AMD Ryzen 5 5600
16 GB Corsair Vengeance RGB PRO DDR4 3200 MHz (single-channel)
GA-AB350-Gaming-3 SSD WD
Green 1TB + HDD Seagate Barracuda 1TB
Gigabyte AMD RX 560

 

[JohnBonhamsGhost]

Thermaltake Smart 500W

the majority of these series i've run into have been very low quality.
wouldn't surprise me at all if it just can't hold up powering a dedicated GPU.

but, this card is ~7 years old so it could also very well be failing on it's own.

i would recommend replacing this PSU either way.
if the issue continues with a higher quality unit then you would know that the GPU was also requiring a replacement.

I've checked HWinfo and HWMonitor to check the voltages and temperature and they seem fine

the fact that reported usage doesn't show any definite malfunction doesn't prove anything.

it can be very short, very slight variances in the power delivery that will cause issues with any component in the system.