User level: Level 1 (8 points)Hi!
My mac air M2 has just developed an issue - i very thin black line vertical on the screen. What is problem and what to do. The line doesnt appear in screenshots or external moniter. In fact the colour may be a deep blue. Any ideas / fixes/ steps. Thanks all
[Edited by Moderator]
Original Title: Line on Screen
Posted on Oct 17, 2026 7:05 PM
User level: Level 10 (211,627 points)Oct 17, 2026 7:28 PM in response to waterboy199
"Line on Screen: Hi! My mac air M2 has just developed an issue - i very thin black line vertical on the screen. What is problem and what to do. The line doesnt appear in screenshots or external moniter. In fact the colour may be a deep blue. Any ideas / fixes/ steps. Thanks all"
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About a Line on Screen:
That would indicate this is a hardware issue. Excellent job troubleshooting this, using screenshots and screen marring. The GUI (Graphical User Interface), includes everything you see on your screen from a digital standpoint meaning it is all encoded into the macOS. So, being this does not show up in the screenshot, no the screen mirror, that would indicate that is a hardware issue.
Get this Mac Serviced...
Through Apple:
Contact Apple, and setup a Genius Bar Appointment at your local Apple Store. Or see an AASP (Apple Authorized Service Provider) in your local area.
Contacting Apple:
Or...
Contact an AASP:
User level: Level 10 (97,882 points)Oct 18, 2026 7:42 AM in response to waterboy199
Welcome and thank you for reaching out. 🤗
When there appears to be a problem with the Mac, only a certified Apple technician can determine the cause and offer a complete solution.
Therefore, I recommend service.
Service Checklist:
Service Appointment:
Contact Support:
Additional Support:
Good luck! 👋🏼😉
Smiliñ 😎 Brian | Community Volunteer
Originally posted at discussions.apple.com/thread/256378135