Update your video card driver from the GPU maker's website.
If you can't update the driver for some reason, then you can disable GPU drawing in Photoshop and restart Photoshop. But you really should update the driver.
How do I disable the GPU drawing in Photoshop?
Preferences -> Performance.
But you really should update the video card driver so you get all the bug fixes.
I resolved the problem. It was somehow related to my using Microsoft
theme pictures. I set Windows to use the basic theme and the problem
went away. Thank you for the suggestions.