I can cast both my Windows 11 screen and a streaming video to my LG Nano75 TV, but...

Windows 11

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Dec 10, 2024
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I used to be able to cast from my Win 11 laptop to this smart TV with no problem. Now I have several problems:(1) The most annoying one is that no matter what I successfully cast to the TV, the "Available displays" dialog box remains stubbornly visible in the lower right-hand corner of the TV screen (see attached screen shot of a static display, dialog box yellow-highlighted).(2) When I succeed at casting a video, the screen on my laptop goes completely black and will not respond to any inputs from the keyboard. I.e., I have to restart the computer to bring it back to life. This means that I h

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