Window 11 full screen issue

Hi Username -

I'm Kevin B., I do apologize for the inconvenience that you're experiencing right now, let me help you sort things out.

When did the issue started?

Kindly try to rollback the display adapter settings on your windows computer and check if it helps

Press windows key + X
Select Device Manager
On the device manager, locate and expand display adapters
Right click on the display driver that is currently installed
Select Update Driver
Select Browse my computer for drivers
Select Let me pick from a list of available drivers on my computer
List of installed driver will be displayed, select an older driver and hit next until the process completes.

If the above method did not fix the issue, kindly try to perform system restore and select a date where windows was still working fine

Perform system restore
-This process will take your computer settings back to an earlier point in time where computer is working fine. If there's any changes made on your computer that removes the service, system restore should be able to fix the issue for you. To perform system restore please follow the steps below:

1. Open the run box by pressing the Windows key + R and type rstrui.exe
2. Once system restore windows open, normally it will suggest a restore point (sometimes it doesn't) if it does, select the 2nd option and hit next
3. Select your desired restore point date and time and hit next and finish.

Windows will going to restart your computer to initiate system restore. System restore might take several minutes to complete depending on the current speed of your computer and the changes it will made. Applications and updates that was installed on the computer prior to the date selected will be removed. It is important that when system restore starts, process must not be interrupted.

DISCLAIMER:
System Restore is a recovery tool for Windows that allows you to reverse certain kinds of changes made to the operating system. System Restore is used to return important Windows files and settings—like drivers, registry keys, system files, installed programs, and more—back to previous versions and settings. Being said all applications and changes made prior to the date selected will be removed and needs to be re-installed if its needed.

Hope this will help and have a bless day!

Thanks.
Kevin B.
Independent advisor