I have similar problem, I have an Nvidia 1070gtx and the integrated intel graphics UHD 630,
The 1070gtx disapeared from the GPU acceleration menu and only can run with the UHD 630. If I disable the UHD 630 in devices the SVP4 doesn't open.
I tried to reinstall everything but windows itself, I think is the same problem you have. Can you enable the integrated graphics to see if SVP opens?