I also seem to have a problem with the screen. Mine's a Mac pro (late 2013) I recently had the screen replaced due to accidental damage but of late the screen started to flicker and there seems to be damaged and blurred lines on the bottom of my screen. When I'm doing my work the screen freezes and then slowly it goes into darkness. Funny thing is when i touch the bottom corner of my screen it works again. However due to this the blur lines have increased. It seems like a damaged screen but since I recently got it replaced i was very careful while using the Mac. So as far as i know I haven't damaged the screen or anything whatsoever. Please Help.