When you boot your Mac, you’re normally presented with a white screen when before your Mac completes the boot process. Usually, your Mac should have an issue when you’re turning it on but sometimes, errors can occur during the boot process.
Usually, after you turn on your Mac, you’re shown the Apple logo and the spinning circle before it completely turns on, but sometimes your Mac can get stuck on the on the white screen after the chime.
The Reason your Mac Won’t Turn On
The reason your Mac won’t turn on and remains on the white screen is that there’s a problem with your Macs software that won’t allow it to complete the boot process. You’ll need to troubleshoot your Macs OS to fix this problem
You can only troubleshoot the Mac using troubleshooting techniques that don’t require your Mac to be fully booted. Before you start troubleshooting your Mac, you need to backup your Mac in case you’ll need to wipe it in the event that your Mac won’t turn on.
To backup your Mac that won’t boot up:
1. Shut down your Mac.
2. Restart your Mac and immediately hold the Command + R keys.
3. Hold it until the Apple logo shows up with the OS X Utilities windows.
4. Select Disk Utility and click Continue.
5. Click Verify Disk. If an issue is found, click Repair Disk.
6. Choose your External drive in the toolbar to save the backup. This creates a compressed disk image of your hard drive’s content. You should now be able to troubleshoot the white screen of death without the fear of losing your data.
1. Reset NVRAM
Non-volatile random-access memory is a small memory that your Mac uses to store certain settings and access them quickly such as your WIFI settings. If you reset these settings, things will take longer to load up but it can fix the booting issue your Mac is experiencing.
To Reset NVRAM:
1. Shut down your Mac. Locate Hold Command (⌘), Option, P, and R but don’t hold them yet.
2. Turn on your Mac.
3. Press and hold the Command–Option–P–R keys once you hear the bootup sound.
4. Hold the keys until your Mac restarts and you hear the startup sound again. Check if your Bluetooth is working and if the not available error message has gone.
2. Hard Restart Mac
The next way to troubleshoot the WSOF is to hard restart your Mac. This would be disconnecting your Mac from the mains and starting it backup again. Doing this refreshes the software so that if there’s anything that’s stopping your Mac from booting up, the hard reset would get rid of it.
To hard reset your Mac, you’ll need to hold down the power button to fully turn off the device. From here, disconnect all the peripherals that are connected to your mac, this includes the power cord, printers, scanners, and USB devices. Once everything’s been disconnected, restart your Mac and it should boot up properly.
3. Reset SMC
The system management controller is an integrated chip on your Mac’s logic board and this is responsible for the power management of your Mac. Resetting your SMC might help fix the white screen of death problem your Mac is experiencing.
To reset the SMC:
1. Shut down your mac.
2. Connect it to the charger.
3. Hold the Shift+ Control+ Option + Power button keys together for 5 seconds.
4. Release the key.
5. Wait for your Mac to boot up.
4. Reset PRAM
Your PRAM is a memory that stores system settings. Since your Mac can’t boot up, resetting the PRAM can help fix the problem.
To reset the PRAM:
1. Reboot your Mac.
2. As soon as you hear the chime, hold down Command + Option + P + R. The next time you hear the boot up chime, the PRAM should be reset.
3. Wait for the Mac to boot up.
5. Force Restart Mac
Since the software within your Mac is stopping it from turning on properly, you can do a force restart which might help fix any problems within the software.
To force restart your Mac, hold Control + Command while pressing the Power button. This combination will force restart your Mac. From here, it should be able to boot up properly and you should no longer experience any problems when you turn it on.