White box that is immovable
Every time I shut my Macbook pro and open it back after a few minutes, a white box with no words on it appears on my screen, I can't move it. The only way I can get rid of it is if I restart my laptop. Sometimes have to restart it multiple times. This has been happening for a few months but I have just been dealing with it, but it's really starting to get annoying.
MacBook Pro Retina