Hello! A few days ago, my macbook pro screen stopped working. As you can see from the photo, it is covered by pink rectangles. Between the rectangles you can still see some of the login screen. I tested it on an external monitor, and everything worked. Thus it can't be a problem with the GPU. I suspect it is either a problem with the screen itself, or the connector between the motherboard and the screen. Which do you think it is? Thanks!