It's a built in Intel HD 3000 video card. I've updated to the latest drivers for the card, but to no avail. Interestingly enough I can stay the task manager and then run apps like Windows File Explorer or MSCONFIG and they display just fine on the black screen, but the desktop oboe shows for a few seconds before going black.
Anyway, after several hours of research and trying things that didn't work, I finally bit the bullet and restored to the Windows 7 image that I created before upgrading to 10. I learned a lot along the way though, so it wasn't totally wasted time. ..