Hello Intakan,
I was forced to use my internal graphics card, because of the damage of my displayport2vga adapter.
The fact, that the videos work now, was only a nice side effect.
kds70 had problems with his DMD and did the following:
- Disable Desktop Composition
- start VPX as admin
- reinstall NetFramework 4.6.1
- activate Aero
- …
After these steps, his DMD works.
And his side effect was, that the topper videos work also.
Perhaps, one of this steps, can help you also