Help please.

Does anyone know how to get rid of this shit? It randomly started, then stopped a week later but it has returned! D:

 

Picture's not showing, what does it look like?

 

if i hover over a window on my taskbar then a little snapshot of the window pops up, and it doesn't go away until i click on a another window.

 

Disable Aero-Peek from windows.

 

EDIT - i figured how to do it in two seconds. Guess it serves me right for being lazy and not actually looking myself.