https://www.google.com/#q=NVIDIA+GeF...screen+in+game

looks like the 500 series had some issues with this a while back. Some of the suggestions I saw were to roll back to older drivers (290 series mentioned a few times).

I was once getting weirdness with my laptop's 670MX (black screen and gold vertical lines flashing in). Oddly enough, it only stopped after updating the package for my sound to resolve an issue with the little subwoofer underneath it cutting in and out. So, perhaps a full BIOS and driver checkup from the manufacturer may be in order if you haven't done the whole works yet.