Recent Windows Update Trashed My Nvidia or DDU is your Friend

Again I found myself in the situation where everytime I fired up Photoshop the layers were completely monochromatic (Blue and Green) and basically Photoshop was unsuable.  I suspect a recent Windows 11 Update that trashed a bunch of other stuff, but you can't be sure with a reasonably complex machine.

Anyway...the last time this happened it took me weeks to find a solution and I got a lot of bad advice along the way.  If this has happened to you recently the solution is DDU which cleans up a messed up video driver installation so that Photoshop magically works again .  Its great stuff.   Posting this in the hope of saving folks some time.