GV100 lost the drivers

the GV100s lost the Nvidia drivers. it looks like the Nvidia Drivers are still loaded but we are unable to run the nvidia-smi command or the access the control panel etc.
I tried to reload the drivers both thru the Desktop updates and manually on the command line. I even tried to purge and uninstall, and then re-install. No luck.
any suggestions?

Please run nvidia-bug-report.sh as root and attach the resulting nvidia-bug-report.log.gz file to your post.

attached bug-report
nvidia-bug-report.log.gz (119.6 KB)

You’ve set your system compiler to llvm/clang so on kernel update, the driver didn’t compile. Please set it back to the standard gcc 9.4 and use dkms to recompile the driver
sudo dkms install nvidia/510.54

Thanks for the information. can you maybe give me a little more detail, on how to change the compiler back to gcc. thanks

https://askubuntu.com/questions/26498/how-to-choose-the-default-gcc-and-g-version

generix, thank you for all your help and your patience.