I have a NVidia 980 card on a Mac running Hugh Sierra. It has been behaving perfectly for a couple of years. Now every time I boot up I get several white bars rolling upwards. Then when I log in I get the NVidia update screen that says "No GPU detected" I open Premiere Pro and it does not give me the CUDA option. What should I do?
It sounds like your GPU has failed if nVidia can't detect a GPU. Do you have two cards? Check your System Info and see if it reports the nVidia card. You might try pulling and re-seatting the card. You might also try running the Apple Diagnostics for your machine.
Many thanks. I was looking around and someone posted that they had the same problem when they upgraded the driver from the NVidia update screen that came up. I went to a site that has all the old drivers, found the right one for my system and installed it. That solved the problem!