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What causes Mac White screen of Death?
If rebooting the machine normally (without Safe Mode) still results in a white screen, it may be a login item causing the Mac to balk at loading. This usually happens after a specific app that’s loading at bootup receives a buggy update.
How do you do a hard reset on an imac?
Shut down your Mac, then turn it on and immediately press and hold these four keys together: Option, Command, P, and R. Release the keys after about 20 seconds. This clears user settings from memory and restores certain security features that might have been altered.
How do I restart my Mac white screen?
Restart the Mac, then press and hold down the Command + Option + P + R keys when you hear the start-up chime. Continue to hold down the keys mentioned in the previous step until you hear the second start-up chime, then release the keys. Wait for the Mac to finish starting up.
What does it mean when your computer screen goes white?
According to users, a white screen appears sometimes if your graphics card is faulty. If the computer screen goes white as soon as you press the Power button, that’s a good indicator that something is wrong with your graphics card.
How to recover from a white Mac screen?
One time-honored trick to recover from a white screen is to boot into Safe Mode. This is very easy to do: simply hold down the shift key on your keyboard as soon as you hear the Mac startup chime. Keep holding down the shift key until the boot progress indicator shows up.
Why does my MacBook have a white screen when I boot up?
From time to time, you may experience one of the more frustrating Mac glitches – a white screen during boot. Usually, this rare bug happens after updating macOS to a new version, but it can happen at any time. You’ll know when you’ve been hit by this bug when you boot up your Mac and see a blank white display.
What does it mean when a Mac starts up to a blank screen?
Learn what to do if your Mac starts up to a blank screen, such as an empty gray, black, or blue screen. Learn what to do if your Mac starts up to an Apple logo or progress bar. A globe with an exclamation point means that your Mac tried to start up from macOS Recovery over the Internet, but couldn’t.
How to fix a Mac that won’t boot?
1 Shut down your Mac. 2 Power your Mac back up. 3 Immediately press and hold these four keys: Option + Command + P + R. 4 Make sure to hold the keys for at least 20 seconds. On some Macs, you may hear a startup sound play twice or the Apple logo appear and reappear twice.