Hi Mark,
Thank you for posting your query in Microsoft Community.
As per the query description, it looks like you get a blue cursor box while typing and it gets highlighted when the mouse is used.
Share this information to assist you better.
1) Where exactly do you get this blue cursor box error while typing?
2) Is it specific to any particular application on the computer or while typing online?
I would suggest you to send us the screen shot of the issue. For better understanding.
I also suggest you to try following methods and check if it helps.
Method 1:
Run system file checker (SFC) and see if it helps. Please follow these steps:
a Press Windows + X keys and click
command prompt (admin).
b. Type the following command in command prompt and press Enter.
sfc /scannow
System file checker is a utility in Windows that allows users to scan for corruptions in Windows system files and restore corrupted files.
If it does not help, use method 2.
Method 2:
Run DISM tool and check the issue. Please follow these steps:
a. Press Windows + X keys and click
command prompt (admin).
b. Type the following command in command prompt and press Enter.
DISM.exe /Online /Cleanup-image /Scanhealth.
DISM.exe /Online /Cleanup-image /Restorehealth.
Your reply is very important to ensure a proper resolution. Please get back to us with the above information to assist you accordingly.
For further assistance, you can post your query in Microsoft Community.
Thank you.
