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06 Aug How to Fix a Mac Stuck on a White Screen
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August 6, 2018If a plain white screen appears when your Mac starts, then some of its hardware or software may have failed. Follow the steps below to solve the problem.
1. Check your Mac's hardware systematically.
To find a malfunctioning device attached to your Mac, start by disconnecting everything from it, including peripherals with a Bluetooth or other wireless connection. After you have done that, restart the Mac and see if the white screen reappears. 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. Replace that broken device.
If the instructions above did not solve the problem, proceed to the next step.
2. Start your Mac in Safe Mode and clean it up.
To start your Mac in Safe Mode, follow these instructions:
- Press the power button, and then press and hold the shift key when you hear the start-up chime.
- Release the shift key when you see the Apple logo and progress bar.
- 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.
- Restart the Mac.
If the Mac can start up successfully, use Cleaner Oneto remove junk files (like app logs and caches), unneeded big files, and duplicates. The App Manager feature can completely uninstall any app with no leftover files.
If the instructions above did not solve the problem, proceed to the next step.
3. Reset the PRAM or NVRAM.
Parameter Random-Access Memory (PRAM) and Non-volatile Random-Access Memory (NVRAM) store configuration information about your Mac. To reset the PRAM/NVRAM, follow these instructions:
- 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.
If your Mac has multiple drives, you might need to select a start-up disk after resetting your Mac. If your Mac starts normally, then you can skip the instructions below. However,
if you must select a start-up disk:
- Restart your Mac, then press and hold down the Option
- In the Startup Manager, use the arrow keys to select the main drive (usually called Macintosh HD), and then press the Return
- Wait for the Mac to finish starting up.
After your Mac successfully starts, go to System Preferences and adjust any settings that changed.
If the instructions above did not solve the problem, proceed to the next step.
4. Make repairs with the Disk Utility.
A faulty hard drive can cause a white screen to appear. Use the Disk Utility to make repairs by following these instructions:
- Restart your Mac, then press and hold down the Command R keys when you hear the start-up chime.
- Release the keys when you see the Apple logo.
- When the OS X Utilities menu appears, click Disk Utility and find the drive that you want to repair.
- Click the First Aid
The Disk Utility will report the status of the drive after it has finished. If it indicates that the drive will soon fail, back up your files and then replace or reformat the faulty drive.
If the instructions above did not solve the problem, proceed to the next step.
5. Reinstall Mac OS X.
You should only try this solution if none of the previous steps have solved the problem. Reinstalling the operating system should fix any corrupted software without deleting your data and files, but you should back them up first if possible. When ready, follow these instructions:
- Restart the Mac, and then press and hold down the Command R keys when you hear the start-up chime.
- Release the keys when you see the Apple logo.
- When the Mac has finished starting up, choose Reinstall OS X from the OS X Utilities menu, then click Continue.
- Follow the instructions that appear until you finish the process.
Once you have your Mac up and running again, install an optimizer app to keep it healthy. Cleaner Onecan help prevent this problem from recurring by thoroughly cleaning junk files, removing duplicates, and highlighting large files. It also includes features like App Manager and Deep Uninstall to help remove unwanted apps completely. Cleaner One Pro even lets you monitor the performance of your Mac so you can discover any future problems before they become serious.
So you are trying to wake your Mac from sleep, and it just wouldn't. All you see is a black screen on your MacBook Pro, no matter what keys you are pressing. Below you'll find a couple of solutions (mostly based on users' cases) to bring your Mac back to the light.
Reasons your Mac screen goes black:
- 3rd party apps that expand the screen
- Recently upgraded operating system
- Corrupted display and energy settings
- Cables not connected
Easy fixes for MacBook black screen
1. Adjust your display's brightness
You may have accidentally pressed the brightness keys on the keyboard, so your screen dimmed down. Could it be your cat stepping on keys? Typehunter mac os. Use F1 and F2 buttons to light the black screen on your Mac.
2. Check if the power is on
Examine your charger cable is intact and if your Mac is charging. Is the green light on? To rule out the power issues, check if your Mac produces any noise — from the hard drive or fans. Sashimi train mac os. If you still see the black screen on Mac, read on.
3. Disconnect all peripherals
Remove all external devices like printers or external drives. These devices may start their own dialogues, which could interfere with your display settings.
More solutions if your MacBook Pro won't turn on
Force restart your Mac
In most cases forcing your Mac to restart helps to fix it if your Mac won't boot. The variance of this issue is your Mac not waking up after sleep. Try to open and close the MacBook lid and press a few keys on a keyboard. It might help, but if it doesn't, in no way should you panic — first, let's perform a quick force restart.
- Hold down the Power key for about 6 seconds.
- Wait for your Mac to shut down and press the Power key again.
Reset your Mac's NVRAM settings
NVRAM stands for non-volatile RAM and is basically a functionality that stores in-memory settings for display, speakers, primary startup disk, etc. Everything remotely connected with the boot process (like your MacBook won't turn on) can be set back to factory settings during the NVRAM reset.
To flush NVRAM settings:
- Shut your Mac down.
- Press the Power key.
- Wait for your Mac to start loading.
- When you hear a startup sound, hold down Cmd + Option + P + R.
- Keep pressing the keys until you hear a second startup sound
Do basic Mac maintenance: disk permissions and Login Items
Did resetting NVRAM do the trick? Now that your display is back to the light, you should be able to do a bit of maintenance under the hood of your Mac. In many reported cases, removing old cache files and broken login items helped prevent the 'black screen' problem. Oftentimes, the reason for your Macbook black screen problem is broken disk permissions not allowing your Mac to boot normally. A good solution is to use the app called CleanMyMac on your machine and run the Repair Disk Permissions command.
- Download the app (it's free to download).
- Install it and go to the Maintenance module.
- Tick Repair Disk Permissions and click Run.
From my experience, it's the easiest way to optimize hardly-accessible parts of your Mac.
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Another possible culprit — the corrupted Login Items. The truth is, some apps like antivirus software would inadvertently sneak into the list of your startup programs; if something goes wrong with the app, it will then affect your Mac's booting. So, it makes sense that you check your Login Items list and uninstall the unwanted app — both too can be done with CleanMyMac's free version.
Zap your Mac's SMC settings
SMC is a System Management Controller. What it controls is temperature, lights, keyboard, fans, and many other side-processes. According to Mac support forums, resetting SMC helps in 90% of the cases when your Mac's screen goes black. To perform this trick, follow the tips below.
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For a MacBook with a non-removable battery:
- Shut your Mac down.
- Connect your Mac to a power outlet.
- While your Mac is still shut, Press the Shift + Option + Control and Power key simultaneously.
- Let go of the keys and boot your Mac again.
For a Desktop Mac: iMac, iMac Pro:
- Unplug the power cable.
- Wait for about 15 seconds.
- Plug your Mac back in and leave it for about 5 seconds.
- Start your Mac in a normal fashion.
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Enter your password — a surprising trick that works
Though it looks counter-intuitive, you may try this solution when your Mac screen goes black. Still, with your Mac's black screen on startup, enter the password — as if you would normally do. Now press the Return key. Lots of users have reported that this option helped to bring their Macs to life.
A variance of this trick has been found on many Mac forums. Once again, it implies that you press the keys on your Mac in a 'blind' mode, hoping that it will light up.
- Press the Power key — just once to summon the restart dialogue.
- Press the S key to send your Mac to sleep.
- Press and hold the Power key to perform a forced shut down.
- Wait for about 15 secs and start your Mac as usual.
Check for any magnets nearby
Inside your MacBook's lid, there's a tiny magnet that reacts when the lid is closed. But when there are other magnets nearby that sends a wrong signal to your MacBook telling it to shut down. For example, this happens if you place your computer atop of an audio speaker.
Placing your MacBook next to a magnet may accidentally shut it down, even if the lid is open.
MacBook asking you to reset your password on bootup?
It may happen that your Mac became unresponsive and asks you to reset your password. However, after following all the on-screen instructions and changing your password, nothing happens — you still see the black screen. Don't worry, there is an easy fix.
When the screen is black, shine the light behind the display through Apple. This will help you see the login icon and put the cursor in the correct place. Then just log in, and the screen will come back.
The last-ditch solution to MacBook black screen
Re-install the macOS
The lion's share of issues we deal with on our computers is software-related. The MacBook display not working is not an exception. So it makes sense that you update all your apps to their latest versions, including the macOS.
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Here is the guide on how to quickly re-install the macOS:
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If all of the above didn't work, let go of it and take your Mac over to the service — you've done all you could. We hope this article was fun and helpful — feel free to share.