Windows 10: I have a black box with white header that can be adjust. how to solve this problem?

i Have a black box with white header that show in my windows 10. this box shown only in dekstop screen. help me on this matter. it can relocate to anywhere in my dekstop.

:)

 

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

 

Cheap Photo box that will get the job done

keep us posted. i'll be interested in this as i've been wanting to do one for a while.

 

white cross in black box

In Windows 10, how do I resolve the white cross in a black box which appears instead of a phot or picture?