Strange yellow color banding in windows in white areas of screen.  white banding in dark screen areas.  only started recently, nvidia driver update and reboot didnt help.  GPU is only 7 months old, minimal use, not overclocked, never run hot or at critically high loads.  Doesnt seem to occur in games.  not sure why i cant attach screenshots.
evga 3070ti ftw ultra gaming
ryzen 7 5800x
32 gb corsair vengeance pro rgb 3200
850w evga gold PSU

If you have another monitor cable swap that out. 

 
Moved to Hardware.

You can't post pictures because you aren't at the requirements to do so.  What you can do is post the links with spaces so that the forum does not automagically remove/recognize them.  
If it's happening in windows only and not in games, as everyone else has said it's more than likely the cable or the monitor itself.  Try swapping both, even using a TV if you have to, and see if things change.