<img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=1577381339179261&amp;ev=PageView&amp;noscript=1">

Lines on Your MacBook Air and Pro: Diagnosis and Troubleshooting

Mar 9, 2018 9:59:00 AM / by BaseQi

Macbook Pro or Macbook Air  lines on screen

Picture this: You return home from work. You go to your desk and turn on your MacBook Air, and all you see on your screen are coloured vertical lines. You don’t know what to do. You also can’t figure out how it could’ve happened because you didn’t drop the laptop and you didn’t spill any liquids on it—you didn’t damage it, in short.

However, there is no need to panic yet. In this blog, you’ll learn how to diagnose the source of the problem and find out why your MacBook Air’s screen suddenly has lines running across it. This blog will also discuss the best potential fixes for the issue, so read on.

Diagnosing the lines on MacBook screen

The first thing you need to do if you see vertical lines on your MacBook screen is to diagnose the problem. It can be a software issue, but in most cases it is some sort of hardware issue.

You should begin by connecting your MacBook Air to an external monitor. If that monitor shows your MacBook screen, it’s a hardware issue. If the external monitor does not show your screen, then it’s a software issue.

Basic troubleshooting

  • Clean or adjust your screen.

The simplest fix you can try is cleaning the screen of your MacBook Air with wipes specifically designed to clean the screens of electronics like laptops. Just bear in mind that it is by no means a permanent fix, and in the event that your screen goes back to normal, you will likely encounter the same problem again soon.

If cleaning your screen doesn’t work, try adjusting the screen by pushing back in certain places (back of the screen/laptop cover) and looking for any improvements in the display. If this also doesn’t work, then move on to the next step.

  • Look at the logic board.

If you connected your MacBook to an external monitor and the display was fine, then it could be the logic board that’s the problem and not the LCD screen itself.

Open up your MacBook and inspect the logic board inside with a magnifying glass. Look for any signs of damage (melted parts). If you’re lucky, your logic board might just need some cleaning.

The worst case scenario here is that your logic board needs replacing. If your MacBook Air is still under warranty, bring it to an Apple-authorized service provider. Depending on the warranty agreement and your specific case, they may or may not charge you for the repairs.

  • Reset the nonvolatile random access memory (NVRAM) on your MacBook.

NVRAM is a small amount of memory used to store settings and access them instantaneously. Apple recommends resetting NVRAM if you experience any problems with the settings stored on it, such as display resolution settings.

To reset NVRAM, follow these instructions:

  1. Shut down your MacBook Air.

  2. Turn it on and immediately press and hold the Option, Command (⌘), P, and R keys at the same time.

  3. Release the keys only when your laptop restarts (you hear the startup sound or you see the Apple logo).

If resetting the NVRAM fixes the issue, just monitor your laptop to see if the vertical lines will appear again.

  • Replace your LCD screen.

If all your other methods have failed, then you have no choice but to replace your MacBook’s screen. You’ll need to buy a MacBook Air LCD panel and an LVDS display cable, which you can check out here.

Before attempting to replace your MacBook’s screen, remember that it is a very difficult thing to do. Don’t try it unless you’re completely confident that you can do it successfully. Otherwise, you might just end up damaging your MacBook Air even more.

  • Bring your laptop to an Apple-authorized service provider.

Don’t have the technical know-how to replace your MacBook screen yourself? The best thing to do is to let a professional do it. Find the Apple service provider nearest your location and bring your MacBook there for repair.


If your MacBook is still under warranty, you might not pay anything. If it isn’t, then you could end up paying a hefty amount. According to the Mac Service And Repair FAQs, screen-related repairs can cost upwards of $300. However, you can be sure that your money will be well-spent. Your laptop will be handled by qualified experts, and only authentic parts will be used in repairing your unit.


Hi, we are team Baseqi, thank you for reading our blog! We are a technology startup founded by a team of passionate designers and Apple fanatics. Our goal is to design unique and high-quality accessories at cutting edge prices for all Apple lovers.


In effort to promote our brand Baseqi, we are currently giving away a free VIP discount pass to our first 100 blog subscribers. You will get a 20% OFF coupon for initial purchase and a 10% OFF coupon code that can be used for the next 2 years! Click to learn more about Baseqi here.


We invent new Apple accessories and gadgets every year. We invite you to interact with us during our design process. Be the first ones to own these cool inventions by becoming our valued VIP member. Subcribe to our blog now and receive VIP discounts for the next 2 years!



Written by BaseQi

Our company officially started in 2013. Since then, we have fans purchasing our products from all over the world. Our mission is to invent stylish accessories and gadgets for fans around the world.

Subscribe to Baseqi's blog

Subscribe to Email Updates