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I have a Pavilion 690-0024 running Windows 10 1909 with a Radeon RX 580 using driver version 26.20.14038.2009. Just recently I installed 32gigs of ram, everything has been fine, but in the last two weeks I have been getting some interference with my video signal. Im driving two LCD flat panel displays using HDMI connections. The problem I am experiencing happens on both screens.

I have attached two images that can act as a comparison of what the problem looks like:

Normal Screenshot of display problem Problem Screenshot of display problem

The issue is two fold:

  1. If I press the caps lock key, certain colors will change/flip. In these screenshots, you will notice that the green button turned to pink.
  2. Intermittently, or upon waking the machine from sleep I will get artifacts that follow my mouse cursor, restarting the machine seems to fix the problem.

This is the first time I have experience this kind of EMI. I purchased some Triple-shield HDMI cables, but now I am thinking that it might be another issue outside of the cables. I wanted to know if anyone could suggest a course of action to troubleshooting this if the cables don't fix the problem.

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    Are these direct screenshots, or did you "mock them up"? If they are screenshots, then the issue is not related to shielding or EMI, but is either in software, or in the framebuffer / compositing / RAM (potentially either graphics or system) pipeline...
    – Attie
    Commented Jul 7, 2020 at 16:25
  • These are direct screenshots. I only put red boxes around the problematic areas. What would be the best way to to troubleshoot this then? I would start with checking the system ram since I just recently upgraded that.
    – trinsic
    Commented Jul 7, 2020 at 16:53
  • Swap out the system RAM, and see if that helps. Does this occur for anything other than your browser (i.e: games / video playback / word processing / etc...). Have you / can you update your graphics drivers? Can you use onboard graphics or a different graphics card?
    – Attie
    Commented Jul 7, 2020 at 17:13
  • Yea it happens in all applications. I updated the graphics drivers, but that did not fix the problem. I will try to swap out the ram and test the onboard video to see if I can reproduce the problem. I will not be back to my studio until the 15th of July 2020. So i will try that then and report back.
    – trinsic
    Commented Jul 7, 2020 at 20:07

1 Answer 1

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So I couln't figure out the problem. I tried updating the drivers and changing the cables but that did not seem to fix the problem. I reinstalled windows 10 clean and that seemed to fix the problem and am not experiencing the problem any longer. maybe it was some incompatibility with drivers/software... no clue.

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