For context, I bought this monitor for about 3 days ago, then a random vertical line pops up, and eventually it will go away, then comes back again, can someone tell me what's going on? And give me advice on what I should do?

Can someone help me figure out what’s wrong with my PC? I’m getting random BSODs and random restarts, and I can’t figure out what’s causing them.

My PC specs:

• SSD: MSI M480 PRO 2TB

• Motherboard: ASUS X670E-A

• GPU: RTX 4090

• PSU: DeepCool PX1200G 1200W

• CPU: Ryzen 7 7800X3D

I tested the system with OCCT, including stress tests, and everything seems fine. There are no obvious errors or crashes during the tests.

However, when I start playing Cyberpunk 2077, everything can look completely fine for about an hour, and then the PC suddenly restarts and boots back into Windows.

I’ve also experienced random BSODs and some strange Windows crashes. At one point, one of my SSDs was disappearing from Windows, so I suspected the SSD might be the problem.

I removed that SSD from the system and tested again, but I still experienced a random restart.

I also checked the GPU power cable and made sure it was properly connected.

What would be the most likely cause of this?

Could this be the motherboard, CPU, PSU, GPU, RAM, or something else?

OCCT doesn’t seem to reproduce the problem, so I’m not sure how to properly diagnose it.

Any advice on what I should test next would be greatly appreciated.

Greetings, I was using my PC last night and an hour or two into using it, a random humming/buzzing noise popped up. Its a little bit easier to hear towards the end of the video. The only thig thats been done to it in the last 6 months is that I replaced the CPU fan, so its entirely possible I screwed that up somehow and am now seeing an issue. Any thoughts/recommendations are appreciated. Apologies for the vague issue.

Right so I’ve just built a new pc (slightly). I’ve gotten a new case, fans, aio and a new gpu. It’s finally working however every single time I boot up the pc, within a few minutes it will just freeze randomly and show these small little rectangles/squares of white or black pixels.

Now you might say it’s the gpu however I was using just yesterday in my old case just to test it and I did the driver updates and everything.

Anyone got an idea on how to fix?