Replaced PC, now one monitor goes out for 2-8 seconds when I start a video on the other.

Question

Replaced PC, now one monitor goes out for 2-8 seconds when I start a video on the other.

Sarah G 0

So my old PC had to be replaced due to hardware failure. The monitors however worked perfectly fine with it, I didn't have issues with screen flashing. I have 2 monitors: an LC 4k monitor (which I only run on 2k), and a Huion Kamvas Pro which is a drawing tablet I use as a second monitor even when I'm not drawing on it.

Once I got my new Windows 11 home PC, I had an issue where my LG monitor would flicker once periodically. I was able to resolve this by updating the monitor's driver.

Now, I'm running into a new issue:

The LG monitor will, a few times a day, randomly, go black for 2-8 seconds. When this happens, the sound also stops on videos, etc. (for reference, I do use external speakers, but they are plugged into the LG monitor as well as the PC). It will come back on its own after a few seconds. Sometimes it's for seemingly no reason, but it does frequently line up with me starting up streaming a video in my browser (such as Hulu or Discovery+) on my Huion monitor. I start up a video on the Huion, the LG goes black for 2-8 seconds and no sound works during this time. Then it starts working no problem. I did NOT have this issue at all on the previous PC.

In my internet searches, I've not been able to find this exact scenario. I did attempt fixes for similar scenarios in hopes that would fix it. I have already done the following:

Updated the monitor's driver
Updated my graphics card driver
Checked the seating of my cables to ensure they are not loose, etc.
Turned off hardware acceleration on the browser for the video (chrome)
Checked PC for updates (I am up to date)

I've had this PC for a few weeks now, and this specific issue has been occurring for about 2 weeks (it basically replaced my initial issue of the screen just flickering). I've run out of ideas on what to try, so any help would be appreciated. Thanks!

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David Jones 0

Ok, this is going to sound a little goofy. I have the same problem and when I asked an inhouse IT guy about my Dell monitor flickering and flashing off momentarily, he advised that it's the monitor's cord display port connection to the router(?). There's apparently no fixing this permanently, as he advised to unplug it and blow across the plug like you would the old game cartridges years ago. He said those connections are just a bad design. I thought his solution was a copout but I honestly got tired of searching for a fix so I tried the blowing method and yep, it works for a day or two, then repeat when needed. Also, sometimes just a wiggle of the cord to reposition the connectors helps, too.

I hope this high tech procedure helps you, lol.

Sarah G 0 Reputation points

2026-10-06T16:45:31.0933333+00:00

I think your inhouse IT guy is probably specifically referring to the Dell monitors they were using because he's used to them (business-grade monitors are usually pretty cheap), rather than an "all monitors have this issue" thing, because I've had this monitor for a few years with no issues, and this issue didn't start until after I did a driver update two weeks ago to fix the flickering (and the flickering was due to the new PC setup).

But just to be safe I did give it a try, and alas no dice. Unfortunately, every time I click "play" on a video on the Huion monitor, the LG monitor still goes out for 2-8 seconds. It feels like it's something internal that's stealing power or something when it tries to load up the video, but I'm not quiet knowledgeable enough to know exactly what it is or how to fix it beyond what I've already tried. Thanks though!