Chosen Solution

The screen on this macbook air (model A1466) is not working (as pictured). I connected the computer to an external display and everything works fine. What causes this, and how do I fix it? I tried disconnecting and reconnecting the screen connector, but this didn’t help at all.

Sadly the LCD panel got damaged, likely something heavy banged into it . You’ll need to replace the display assembly MacBook Air 13" (Mid 2013-2017) Display Assembly and here’s the guide MacBook Air 13" Early 2017 Display Assembly Replacement