iMacs tend to be very reliable. I have a friend who has had an iMac for almost a decade now. However, even the best designs can fail sometimes. A lot of users have been reporting an issue with their iMac startup. An iMac white screen will render your device useless and it’s also called the white screen of death (WSoD). If you are reading this article, then you’re probably looking for a solution to this problem.
In this article, we will discuss all there is to know about the iMac white screen. We will take a look at what causes this issue and we will also give you several ways to fix it. Let’s get started.
Why is my iMac Stuck on White Screen?
This issue occurs when there’s a software or a hardware defect in your iMac. Your iMac will boot up and show you the Apple logo, but will only display a white screen after that. This issue is usually seen in old iMacs after a new software update. Before replacing your computer, you should check out the causes of this issue and their respective solutions.
One usual suspect is the hard disk drive. HDDs have a limited lifespan and they are really popular amongst older models. If you have a faulty disk, then it can cause this white screen of death. Software updates can mess up older hardware due to incompatible drivers and other programs. To be frank, any hardware issue, like a graphics card defect, can cause the iMac white screen. But don’t worry, since we have solutions for a lot of these problems.
How to Fix Mac White Screen Issue?
We have scoured the forums and user reports to find out all of the methods you can use to fix the iMac. Most of these methods will save you a trip to the nearest service center and will also save you a lot of money. Let’s jump right into it.
1. Enter Your Login Credentials
This is a long shot, but if you can see your cursor and it changes to the text symbol in the middle of the screen, then try entering your login credentials. You won’t be able to see anything on the screen but press Enter after typing your username and password. If all goes well, then you will be able to see a new screen with “Finishing Updates” displayed on it. Wait for a few minutes until the updates are finished and your iMac will start working fine.
2. Remove All Peripherals
If the step above didn’t work, then try this one. A faulty peripheral can cause an iMac white screen. If this is the case, then you have to disconnect all peripherals to determine which one is causing it.
- Hold down the Power Button to turn off the iMac.
- Disconnect all peripherals (includes keyboards and Bluetooth devices).
- Restart your computer to see if you still see the white screen of death.
If the issue was caused by a faulty peripheral, then this should fix it. You can find the unruly device by connecting the peripherals to the system one by one. If this didn’t work for you, then move on to the next step.
3. Safe Mode
Safe Mode is used to troubleshoot computers in both Macs and PCs. It deletes cache files and disables startup items. It also checks if the startup disk has any errors. To start your iMac in Safe mode, simply follow these steps:
- Turn off your iMac.
- Once it shuts down completely, wait for a few seconds and turn it back on. Press the Shift key as soon as the iMac boots up. This must be done before the Apple logo shows up.
- Release the Shift key as soon as you see the login screen.
- Restart your computer once again to see if the problem persists.
4. Reset the PRAM/NVRAM
The PRAM/NVRAM stores a lot of important data. Unlike DRAM, NVRAM retains its data even after the computer is turned off. Resetting the NVRAM can fix a lot of software issues. Just follow these steps:
- Press the Power button and turn off your iMac.
- Wait for a few seconds before turning it on again.
- Immediately press and hold Option+Command+P+R together.
- Release these keys after another reboot.
If that didn’t fix the white screen of death, then move on to the next solution.
5. Use Disk Utility
Disk Utility is a nifty tool that finds problems with your storage devices and attempts to fix it. If there are bad sectors in your storage, then this should fix it.
- Turn your computer off.
- Wait for a few seconds and turn it back on while pressing the Command+R keys.
- Release the keys when you see the Apple logo.
- Instead of a white screen, you will see the macOS Utilities screen.
- Select Disk Utitility.
- Select your startup disk.
- Click on First Aid.
- Click Run.
- Wait for a few minutes and reboot your iMac.
6. Reset SMC
The system Management COntroller or the SMC is responsible for a lot of important computer functions like fan speed. Resetting the SMC will solve issues that might be causing the white screen of death. To reset the SMC, just follow these steps.
- Turn off your iMac.
- Disconnect the Power cord and wait for a few seconds.
- Connect it again, wait for a few seconds and turn your computer back on.
7. Reinstall macOS
If none of the methods above worked, then reinstalling macOS might be the best option for you. There are three methods for this, depending on the macOS version that you want.
- (Recommended) Turn off your computer and then turn it back on while pressing the Command+R keys. Do this if you want to reinstall the macOS that’s currently installed.
- Restart your computer. Press and hold Option+Command+R keys when it boots up. Do this if you want the latest version of the macOS.
- Restart your computer. Press and hold Shift+Option+Command+R keys while your iMac boots up. Do this if you want the macOS that was installed at the time of purchase.
After doing any one of these three steps, choose Reinstall macOS in the macOS Utilities screen and follow the instructions.
8. Take It To Apple
If none of the methods worked, then it’s probably a hardware defect. You can try replacing the hard disk, but we would recommend that you take it to a specialist who will help you determine the broken part and its cost.
That’s all there is to know about the iMac white screen. I hope that this article helped fix your iMac. If you have any doubts or suggestions, please let me know in the comments section down below and I will get back to you as soon as I can.