MacBook Pro Screen Black Lines at Bottom: What’s Actually Happening and How to Fix It

MacBook Pro open on a white desk showing horizontal black lines at the bottom of the screen.

Black lines at the bottom of a MacBook Pro screen are most commonly caused by a worn-out display cable (Flexgate) on 2016–2019 models, a macOS graphics bug, or physical LCD damage. Try a screenshot test first if the lines don’t appear in the screenshot, it’s hardware. If they do appear, it’s software. Most people notice … Read more