Windows 10: Black box on my bottom right corner its stuck there

Today after a game this random box on my bottom right corner appeared and i cant get rid of it i tried restarting my pc countless times and nothing works ive searched on the internet for the problem and i only found really old windows versions so i dont really know what to do help me pls!!


here is a picture of what it looks like (picture)

:)

 

Black box in bottom right hand corner, please help.

I have a little black box in the bottom right hand corner of my screen, and it gets in the way when I want to go to touch something there. Does anyone know how to get rid of that?

 

Upper right corner lag.

And the hotfix too, 10.12a over it as well?
sorry you may did but i no idea, so step by step.

And just make it clear;
your lag is the mouse arow in the corner/
if yes;
do you use samthing on sidebar?
if yes try to switch off and see...
just my one cent

 

Cheap Photo box that will get the job done

WEll i took on this project for PP hes a hardware reviewer and wants to get the professional looking pics for the Pc parts

Materials:

• Big cardboard box

• a razor

• white material 3 yards

• cone lights

• stapler

• medical tape

• pvc pipe about 6 inches longer than your box

• white paint any cheap finger paint would work

the project I'm guessing will cost me $30 if it works out properly
I will post pictures and step by step as i do it