Answer to: MacBook suddenly has inverted/flickering vertical strip on the screenI was cleaning the laptop body and the screen right before the problem started. I tried all the fixes suggested in here to get rid of the problem. Nothing really seemed to work for the first hour after the problem started. I tried exerting pressure on the lower left half of the screen after about 2 hours. This time i started seeing temporary improvements. Long story short my problem resolved itself about 4 hours after it started and the screen is back to normal. I am concerned the problem may occur again, but this one may require some patience and I suggest waiting for 4 to 6 hours before you try taking anything apart.