On Windows 11, if you're experiencing screen flickering, it's either an incompatible app or an issue with the display driver, which you can fix with these instructions.

If your computer display suddenly gets too big in Windows 11/10, check your Display settings and Graphics driver. These fixes will help you resolve this issue.

If the Display Option is missing from Windows Settings on your Windows 11/10 computer, you can follow the solutions mentioned here to resolve the issue.