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Yes, that was where I started and I posted my own problem there as well. However her problem is slightly different, she is also seeing it on her external monitor. I am not. Similar to the screenshot problem that I pointed out previously it doesn't seem to be something that Windows is doing/is aware of. It doesn't show up in an RDP session either.
So, I started with thinking it was a hardware issue and contacting HP. Then I remembered that Curtains was installed on this computer when it was running Windows 10 and I had uninstalled it when I upgraded to Windows 11. Since the behavior seemed to be curtain-like
(a pink curtain dropped over the screen) I found the purge batch file for Curtains and ran it. When that didn't take care of the problem I found Start10Tweak and disabled Start 11. Since that seemed to cure the problem that's how I ended up here.
I don't think this is a hardware issue but rather software that is causing weird hardware behavior. Even after uninstalling/disabling Start 11 it takes awhile for the pink haze to go away. I haven't determined the exact sequence of full shutdowns, restarts etc. that gets rid of it. Generally it just seems to be time, I'll look at the screen at some point and it will be gone. But, once it goes away it doesn't come back.
I have Start 11 uninstalled, I'm going to run it that way for a week to make sure the problem doesn't occur. At this point I'm just trying to nail down the issue for you. I can live without Start 11, just can't deal with a pink screen.
Thanks,
Dave Erwin