Chosen Solution
I dropped My MacBook air and when I picked it up it looked finn but then when I opend it it had colored line over the screen. Everything works fine but this lines are in My way and I don’t have time to go get it fixed.
Plug in your system into an external monitor, If the image looks good your display assembly is damaged and will need to be replaced. MacBook Air 13" Early 2015 Display Assembly Replacement and here’s the needed part MacBook Air 13" (Mid 2013-2017) Display Assembly