Hi Ralph,
I'm glad to help any way I can.
The glory of tech is that there are so many settings you can nuance.
The bane of tech is that there are so many settings that can screw things up
The HDR setting that I turned off much to my benefit is a Windows System Display setting:
HDR_OFF-0000-small.jpg
I hope this does the trick for you.
ttfn,
Sherry