The new Windows 11 update, which has recently begun rolling out, appears to be causing a range of display issues for beta testers. Reports from MSPoweruser indicate that users are encountering various screen-related glitches after upgrading.
Common problems reported include screen settings being reset after every restart, black screens occurring when using Alt + Tab to switch applications, and both black screens and lag during fullscreen gaming sessions.
Several remedies have been suggested, including checking and securing hardware cables, updating graphics drivers, and even reinstalling Windows. For those who continue to face display issues despite these fixes, reverting to the previous Windows version (23H2) might be a necessary step until Microsoft addresses the bugs. Note that this rollback process may require a full reinstallation of Windows.