Why I Have This Blue Line On The Screen Macbook Air 13 Early 2017

Chosen Solution

A vertical blue line just appeared on the screen of my macbook air. I tried to reset the PRAM but it did not work. Also applied pressure on the borders of the display. This also did not work. Any one have any suggestion ? Thank you !

If it appears immediately when the MacBook turns on, the screen has gone faulty and needs to be replaced. MacBook Air 13" Early 2015 Display Assembly Replacement MacBook Air 13" (Mid 2013-2017) Display Assembly