Macbook Screen Flickering? (100% Working Fixes)

May. 2, 2024

A glitchy Mac screen that flickers and flashes can ruin your work day or binge-watching plans. This is annoying and worrisome, especially when facing these issues on an expensive laptop. The screen flickering problems might arise due to something as simple as minor software glitches or something complex like hardware damage. Fortunately, some easy fixes can fix those frustrating display issues in no time. In this article, we’ll discuss 10 ways to fix Mac screen blinking, flickering, flashing, or other problems. So, let’s move along and fix that glitchy display.

Method 1: Restart your MacBook

One of the easiest and quickest ways to fix MacBook screen flickering issues is to restart your machine. Sometimes, your Mac screen might be flickering due to some temporary problems, which can be easily fixed by restarting your computer. It might sound old-school, but it works wonders in some cases. So, you must give it a try.

Are you running an older version of macOS? If yes, it might be the reason for MacBook screen flickering problems. The older version might not be compatible with some of the latest apps on your Mac. As a result, it may trigger some problems, including random screen flashes and other display issues on a Mac. To fix this, you must check for the latest macOS updates.

If your Mac screen keeps flashing and you’ve connected an external display or any other accessory, you must check the connections. Sometimes, your Mac might throw display issues if there are any loose connections. So, just make sure all the connections are tight and secure. Even better, unplug all the external accessories and then plug them firmly into your Mac. This should help you fix Mac screen glitching problems.

In some rare cases, your MacBook screen might be flickering due to a hardware problem. To verify if this is the case, you can run Apple Diagnostics. It will help you figure out if your Mac screen flashing issue stems from a faulty display or graphics processor.

Before you run Apple Diagnostics, make sure to do the following:

On Macs with Intel processors,hold down the D key duringthe startup.

If you’re using a MacBook with Apple Silicon,shut downyour Mac and turn it back on whileholding the Power button. Keep holding the key until you see theStartup Optionsscreen. Now, pressCommand + Don your Mac’s keyboard.

Besides, you may see service and support options. Make sure you’re connected to the internet, and then click on“Get Started”or pressCommand-G.

If you’re using a MacBook Pro that has two graphics systems, Mac screen suddenly flickering issues might be due to the Energy Saver working improperly. There’s an “Automatic graphics switching” option in Energy Saver that reduces power consumption to prolong the battery life. When you enable this feature (which is turned on by default), your Mac will switch between 2 different graphics chips, which might cause the MacBook screen to flicker with horizontal lines.

Here’s how to turn off Automatic graphics switching on Mac:

Note:The Automatic graphics switching setting is only available on MacBook Pro models that have two graphics systems.

Once you’ve done this, restart your Mac to see if the problem has been fixed.

Here’s how to disable True Tone on your Mac:

Alternatively, you can click onControl Centerfrom the Menu bar, chooseDisplay,and thenturn off True Tone.

If you’re using an older, Intel-based Mac, you can try resetting PRAM or NVRAM to fix the glitching screen. For those unaware, NVRAM (Non-volatile RAM) and PRAM (Parameter Random Access Memory) are memory areas that store different kinds of data like display resolution, volume preferences, startup disk selection, and more. Your Mac may face display issues if there are any glitches in these memory modules. In such cases, you can reset NVRAM/PRAM to get everything back in place.

You don’t have to worry at all as resetting these memory modules won’t affect the performance of your Mac.

Follow the below steps to reset NVRAM on Intel Macs:

In the case of Apple Silicon Macs, the NVRAM is automatically reset on startup (if needed). You don’t have to do anything manually, as with Intel Macs.

The System Management Controller (SMC) on a MacBook is an important chip that’s responsible for several internal power settings. This chip handles the process of putting your MacBook to sleep and waking it up, switching between different graphics modes, and more. Generally, there’s no need to reset SMC on all the Macs. This is suggested for Intel-based Macs to resolve complex issues related to power. Besides, you can use this method to fix MacBook screen blinking problems.

Before you reset SMC, do the following onMacBooks with Apple T2 chip:

In case your MacBook Pro screen is still flickering, you must reset SMC:Image Courtesy: Apple

If you have anApple Silicon MacBook, you just need to restart your computer.

If you’re using another MacBook model,check out this Apple Support pageto learn how to reset SMC.

If your MacBook screen flickers frequently, you must restart your computer in Safe mode to isolate the cause of the issue. It’s been a trusted solution to fix several software-related issues on a device. When you reboot your Mac in Safe mode, the system undergoes certain diagnostics at the startup to check its functioning.

Also, Safe mode prevents macOS from loading certain software when it starts up. This includes unnecessary system extensions, login items, fonts not installed by macOS, and more. This mode performs a quick check on the startup disk and wipes out some system caches such as font and kernel caches.

How to Reboot Apple Silicon Macs in Safe Mode

How to reboot Intel Macs in Safe Mode

If the flickering issues are gone, some recently installed apps or software were likely the culprit. So, make sure to uninstall the apps that you don’t need.

If the above steps didn’t help, it’s an indication that some complex software bugs are responsible for MacBook Pro screen flickering issues. If this happens to be your case, the ultimate solution is to reinstall macOS on your MacBook. It may seem to be a daunting task, but it’s fairly easy to do through macOS Recovery. It will install the current version of the most recently installed macOS.

Note:

Reinstalling macOS won’t delete your apps or any data. So, there’s no need to back up your Mac.

How to reinstall macOS on Apple Silicon Macs

Those were 10 ways to fix MacBook screen flickering and showing horizontal lines. We hope you’ve found this guide useful and the above steps helped you flickering lines on your Mac.

Which trick worked for you? Don’t forget to share your experiences in the comments below.

Some of the most common reasons for MacBook screen flickering problems include:1. Software glitches2. Fluctuations in the power supply3. Hardware issues (be it physical or water damage)4. Malware or troublesome apps5. Older macOS versions