Once the Mac has gone into Safe Mode, go to your Applications folder to uninstall the apps that you no longer use, then empty the trash.

Release the shift key when you see the Apple logo and progress bar.

Press the power button, and then press and hold the shift key when you hear the start-up chime.

To start your Mac in Safe Mode, follow these instructions:

Start your Mac in Safe Mode and clean it up. If the instructions above did not solve the problem, proceed to the next step.Ģ. If your Mac starts normally, then you can try reconnecting all of the devices one at a time until you find the one that caused of the problem. After you have done that, restart the Mac and see if the white screen reappears.

To find a malfunctioning device attached to your Mac, start by disconnecting everything from it, including peripherals with a Bluetooth or other wireless connection. Check your Mac’s hardware systematically. Follow the steps below to solve the problem.ġ. If a plain white screen appears when your Mac starts, then some of its hardware or software may have failed.

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