Static noise on monitor speakers

[wingertbe]

After a forced shutdown (aka. holding the power button down), one of my monitors is putting out a constant white noise sound via its speakers. The audio device is disabled in Windows, but I believe it's a windows issue since the white noise only starts once windows has initialised its display drivers during boot (indicated by the screen turning off and on again). The monitor in question is connected via DP, the other, identical, monitor is connected via HDMI and doesn't have this issue. My monitor has no option to turn off the speakers, so I kind of need to solve this.

I already tried plugging out the monitor and reconnecting it, restarting windows, and obviously turning the monitor off and back on. Here are my specs:

Intel i7 4770K
Asus ROC Hero VI MB
Zotac GTX 1080 Ti
Sound Blaster ZxR Sound Card
Some other stuff I can't remember but can supply if needed.

Hope someone here has an idea.

 

[Ralston18]

Swap the monitors to see if the white noise stays with the monitor or the source (HDMI or DP).

If the latter, then reinstall the audio/video drivers.

Good chance that the forced shutdown corrupted the drivers or some corruption problem caused the problem to begin with.

And the only way out was the forced shutdown....

 

[JackNaylorPE]

Wouldn't perhaps have an older GSM phone nearby ?

http://blog.rfvenue.com/2015/05/06/how-to-prevent-cell-phones-from-interfering-with-audio-equipment

 

[wingertbe]

I did try swapping the cable, but the issue resolved itself over time. The noise gradually got quieter and quieter over the course of the day and today I cant even hear it anymore. Thanks for the attempts to help though.