I have a similar problem on Win 10 for Nvidia Geforce card.
Opencpn Opengl is no longer working, just recently.
Jackpo, first save a restore point.
Then I think I am going to turn off automatic updates.
That has mangled my Startup Menu twice, by having some update not install properly, so I had to retrieve it via convoluted methods and eventually Restore.
I think I am going back to Dell's most current
drivers for my Nvidia Card.