The lines are vertical and are of different colours and after that lines we also have a vertical white translucent many lines combined together. What can be the issue
MacBook Air, macOS 15.5
This looks like the connection between the display and the motherboard does not work correctly anymore.
You should visit an Authorised Apple Service Provider or Apple Store next to your place to get it diagnosed, which might be the fastet way to get a result.
Or contact the official Apple Support to send it in for service:
The screen of my macbook air has lines on it and it's flickering
