Rtx3070, xid=79 GPU has fallen off the bus. Reseated / Change PCIE slot/ Change gpu card not work

Please see this on how to update your bios so you can use newer drivers:
https://forums.developer.nvidia.com/t/nvidia-driver-problem-rtx3080-12gb-220a/221224/6
If the issue persists, please check/replace your psu.