Mac White Screen: How To Fix Your Mac That Won’t Turn On

In this article, we will explain how to fix your Mac that won’t turn on. You may have noticed that your Mac won’t startup? Does your computer get stuck at the Apple logo?  your Mac computer stuck on a white/gray screen (mostly after a start-up chime)? Don’t worry, first stay calm, these errors are due to software issue or some minor bugs in your macOS.

Before proceeding do make sure to back up your Mac. This problem may affect various Mac devices such as MacBook Air, MacBook Pro, iMac, MacBook, Mac Pro.

Note: Our following solutions are for that Mac shows you a completely white screen – without logos & without status display. We would also like to point out that not all of the approaches will lead to success since the problem can occur for different reasons. Therefore try the offered suggestions one after the other.

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Restart in Safe Mode

A very simple method to work around the problem is to start the Mac in Safe Mode. To do this, restart your Mac. Immediately after the restart, hold down the Shift key and only release it when you see the Apple logo and status indicator. If there are no problems afterward, you can restart the computer as usual.

Reset the NVRAM

Resetting the NVRAM can also solve the problem. This is available in all Intel-based Mac devices. The main purpose of NVRAM is to ensure basic content to correct functioning properly, such as:

• They set loudspeaker volume.
• Adjusting selected screen resolution.
• Selection of the boot drive.
• Time zone for correct time display.

Step to Reset the NVRAM

1. Turn off the Mac completely by clicking on the Apple logo  at the top left of the screen and selecting “Turn Off”. 
2. After shutting down, look for the following keys on the keyboard: Command key (cmd), Option key (alt), (p), (r)
3. Restart the Mac and immediately hold the key combination Command (cmd) + Option (alt) + (p) + (r) after the start.
4. Hold down the keys until the Mac restarts and you hear the start tone. Release all buttons at the same time.
5. If necessary, configure the speaker volume, screen resolution, time zone, and boot drive when restarting.

Reset the software management controller (SMC)

The SMC controls various hardware components of the Mac. These include the following:

• Computer fan
• Backlit keyboard
• Status light
• Battery status indicator
• Backlight the screen
• and other components

Since the SMC can be reset in various ways on Mac computers, we would like to refer to modern MacBook models with non-removable batteries at this point. For other Mac models such as the new Macs with a T2 security chip, you can find instructions here.

1. Switch off the device completely by clicking on the Apple logo  in the menu bar and selecting “Switch off”.
2. Connect the included power adapter to the wall outlet and to the computer.
3. Simultaneously press Shift + (ctrl) + Option (alt) on the keyboard while pressing the power button.  
4. Release all keys at the same time and then press the power button again to turn on the Mac.

If this doesn’t help with the problem either, try the following:

Repair the startup disk

Try repairing your startup disk by opening Disk Utility from macOS Recovery which may be corrupted. Please follow these steps:

1. Restart the Mac and then hold down the Command (cmd) + (r) key at boot. 
2. Select the Disk Utility from the list.
3. Select the startup disk and then click on the “First Aid” tab.
4. Now select “First Aid” and repair the drive.

Contact Apple Support

Contact Apple Support before reinstalling macOS. We don’t recommend reinstalling macOS as it can lead to data loss and may occur corrupt your system. I hope this article solved your Mac White Screen problem.