Réponse à : « Pink lines suddenly appearing on display »I had this issue while updating the system version. The story goes like this. I need to update my system. The machine has been bugging me to update for weeks. I remove external monitor and power move laptop to other room. Closer to WiFi. I start up ate. It seems to proceed OK. About twenty mins later the screen is black I restart the laptop. I get the pink lines restart again. I get the system updating loading screen twenty mins pass. I see this string about the pink lines. I think is have a video issue. I’m planning a trip to the &&^&^$^ apple store I move laptop back to the other room plug in external monitor and power Loading screen appears on external monitor with some time left on the up load The upload completes i get normal working screens on my laptop and external monitor !!! im not sure what happened. Perhaps I caught the updating in mid update so it showed the pink lines. Not sure.