Windows Upgrade Help and more

Yeah, Agreed, it's a weird oversight. A quick tip: you can also try the high contrast themes under Accessibility settings—some get closer to true black.

You could also try clearing the TPM from within Windows' security settings, then restarting and checking the BIOS again. Another option is to use the Media Creation Tool for a clean install, which sometimes bypasses weird upgrade checks. Let me know if that works.

Same here. Yeah, exactly. One quick thing: also make sure you've selected the monitor's HDMI audio device as the default in Windows, not just in your media player. Let me know if that works.