Windows 10: I can't get rid of a small floating number at the bottom middle of my windows screen in a...

There is a floating white square at the bottom middle of my windows screen. I've tried restarting all my applications to get rid of it. SOLVED: I went to task manager and right clicked on Windows explorer and hit restart. The screen blacked out for a second and restarted and the mysterious number was gone!

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What is the floating window on my screen and how do I get rid of it?

This window floats in the top middle of my screen. It sits on top of my other apps, and I cannot click it. It has a small arrow pointing up to a window. Does anyone know what causes it and how to get rid of it?

 

There is a floating 100 in the bottom middle of my screen

I opened up my laptop to see that there is a random floating 100 on the bottom of my screen, and i don't know how to get rid of it. Please help me.

 

Small gray transparent icon floating on top right screen

Hi, just updated to windows 11 on my Microsoft Surface Pro 7. There is this small gray floating half circle on top right if my screen. My mouse does not work and when I touch this gray circle a box opens up as follows:

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I CANNOT get rid of this box or gray circle.

Please help