Question Random PC Shutdowns & Audio Glitches: Bad PSU or Motherboard?

NeonTechMan

Distinguished
Aug 19, 2015
7
0
18,510
Hey y'all

Hoping someone could give me a hand with this. It's been driving me nuts

Recently, my computer suddenly shutdown without any notice. One second I was using it, the next there was a black screen as if my house had just lost power. Attempting to turn the PC back on caused it to log in, then shut down once again. Leaving the computer off for a few hours allows me to actually use it again, but prolonged use with video playback or voice calls causes it to shutdown once again.

Initially, I thought this might be a power supply issue. Since I haven't used my PC in over a month, I went to cleaning out the dust and ensuring the temperatures of the CPU and motherboard were at a good level while using the PC. However, there's now audio glitches with the front audio panel, which causes audio oddities and speaker static. This doesn't happen to the rear panel. Additional, some small visual glitches have begun to occur where the taskbar may flicker or the wallpaper turns to black on startup. I've never experienced any of these issues before.

Right now, I've disconnected the old power supply and hooked up another model that I know works fine. While I haven't gotten any crashes yet, the audio is still bugged and the visual glitches are still present sometimes.

I'm here to ask any of you more experienced people if this is a problem with the power supply, or could it be the motherboard? I still get a single beep on POST and I can't see any bulged capacitors (nor have I heard any bangs). Is it possible the PSU is defective and the motherboard has now been damaged due to the sudden shutdowns? Any and all advice is appreciated. If more details are required I'll be more than happy to provide.

Power Supply: https://www.coolermaster.com/catalog/power-supplies/mwe-series/mwe-gold-750-full-modular/

Motherboard: https://www.asus.com/au/Motherboards-Components/Motherboards/PRIME/PRIME-X570-P/
 
Could you list all of your pc components please? Have you run sfc /scannow?

Hey, I've just got all my PC parts listed below. I tried running a sfc scan and although it fixed some corrupted files, it hasn't fixed any of the issues.

CPU: AMD Ryzen 5 5600x
Motherboard: Asus Prime X570-P
PSU: Cooler Master 750 Gold 80+ Fully Modular
RAM: 4x 4GB HyperX DDR4
GPU: Geforce GTX 1070 Ti
SSD: Transcend 445 GB
HDD: 2x 1 TB
 
Did that, but it hasn't fixed it. Not sure how removing the HDDs would help at all.

The audio glitch became present after the computer crashed for about the fifth time, so I'm worried that a faulty PSU is causing further damage to the rest of my computer. I don't know how to test components thoroughly and I'm hesitant on buying new components unless I'm positive. I'd also rather not go to a specialist if it can be fixed from home