How do I fix this. Can't see my stairs or ramp. Only see black spots under were they are.

It was fine when I saved and exited, came back and can’t see my character, texture or my stairs/ramp. Looks like black shadow under were they are, In the little “show” drop down to view for the different viewing options tried to reset to default didn’t work, not sure what to do. Thank you in advance.

Idk if its my GPU but I closed and opened it a few times and every time would load up more and more now everything loaded up… Weird.