Black Window Stealing Focus

First off, from what I can tell this is some sort of window. Windows can display over top of it, but only by bringing up or forcing the OS to show a window or item by hovering mouse over taskbar icon. The black window also is not fullscreen as anything being displayed behind it can be visible as a border around it (1 pixel on all sides).

I can't really say what is causing it. I have disabled searchapp.exe as it seemed to be randomly stealing the focus and it was being reported as the culprit by Window Focus Logger. Unfortunately it still happens from time to time, but focus logger now says it's Explorer.exe taking focus. I have tried terminating and disabling processes and services trying to determine what it is. The only way to remove it is to restart the computer. When doing so, before windows shuts down, the black window does close which suggests to me there is a process behind it.

Windows 10 Home Version 20H2 (OS Build 19042.804)

I will do what I can to provide any information request.
I am attaching 2 images, the first being what is displayed when it happens.

Any help would be greatly appreciated.

So I may have figure out the issue. I will be doing more testing to see if i can replicate the issue and I will reply back with more info later.

So I was wrong, the issue remains. Though I have noticed it can trigger when loading certain things like loading a discord channel or browser (usually chrome).

I can also remove the black window by logging out of windows, but then have to log back in. This does save time compared to restarting the pc.

Still trying to figure this out.

I can (almost) always trigger the event now. Which windows logs as "Display driver nvlddmkm stopped responding and has successfully recovered."

I don't know why this is only affecting only one monitor or why it seems to be a window overtop of the primary display.

I'm going to continue looking into this. Any help would be appreciated.