Problems on MacBook Pro OS High Sierra can take different forms. However, among all of them, it is the Gray Screen of Death that is considered the most troublesome.
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There are many possible causes why a MacBook Pro gets stuck on a gray screen. Surprisingly, too, there are lots of MacBook issues that get mistaken for the gray screen problem on MacBook Pro OS High Sierra. So to clear things out, continue reading below.
The MacBook Pro Gray Screen Issue
Believe it or not, the gray screen issue on MacBook Pros frequents every Q&A site. It seems that more and more MacBook Pro users running High Sierra are still unable to find solutions to their problem. Feels terrible, right?
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Well, it only feels that way because many still have got no clue for a possible reason. But if you're familiar with the nature of Macs, you should know that the chances of fixing Mac issues are high.
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Interestingly, what those MacBook Pro users are seeing is not really a gray screen. It could simply be a black screen with a built-in Retina display that appears gray during the initial startup phase. Most often, the problem is reported to appear after restarting a MacBook Pro. There are instances , though, when the gray screen appears with the Apple logo or a spinning globe sign.
Now, how do we fix this gray screen problem?
6 Possible Solutions to Gray Screen Problems on MacBook Pro OS High Sierra
Of course, there are hardly problems that cannot be resolved. The same applies to your MacBook. Here are six possible solutions to your gray screen problems:
Solution #1: Disconnect All External Peripherals.
- First, shut down your MacBook by pressing the Power button.
- Disconnect all the peripherals connected to your MacBook, except the mouse. Be sure you also disconnect your headphones and any Ethernet cable.
- Switch on your MacBook.
- If you are already seeing a blue screen, then it means the problem is with one of the peripherals. Try to find the problematic peripheral by shutting down your Mac and reconnecting the peripherals one at a time.
- After identifying the faulty peripheral and you still see the persistent gray screen, it is possible that your mouse or keyboard could be the culprit. If you have an extra mouse or keyboard, swap it and test it out.
- Restart your MacBook.
If the display of forlorn grayness persists, then try the succeeding solutions.
Solution #2: Repair Your Hard Disk Drive Using Disk Utility.
Another possible culprit for your gray screen problems is your hard disk. To fix it, you have to run Disk Utility by booting your system into Recovery Mode.
Follow the instructions below for a step-by-step guide:
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- Shut down your MacBook Pro by long-pressing the Power button.
- Hold down the CMD + R keys to power up your MacBook Pro again.
- You will be taken to the OS X Utilities screen.
- Select Disk Utility.
- Choose your MacBook Pro's built-in hard drive under Disk Utility.
- Hit Verify Disk to continue.
- You should receive a notification that the problem has already been fixed.
If the gray screen still greets you, you still have four more options to try.
Solution #3: Safe-Boot Your MacBook Pro.
Have you heard of the function called Safe Boot? It works by performing certain diagnostics on your macOS to ensure everything is up and running. It so happens that this function can also get rid of your gray screen problems. Kill dr. cote mac os.
To run Safe Boot, follow these steps:
- Shut down your MacBook Pro.
- Wait for 10 seconds and restart it while pressing down the Shift key.
- Safe Boot will now start doing its job. Just wait for it to finish its task.
- It will notify you if it has already completed the diagnostics.
If this solution worked, restart your machine from the Apple menu. Otherwise, let's find out what else you can do.
Solution #4: Reset the PRAM or NVRAM.
Sometimes, the problem is with your PRAM or NVRAM. These unique memory sections are notorious for causing troubles in Macs. Then again, they can be reset to their default settings. Although resetting to your default MacBook Pro settings will take time, it could be worth it.
Here's how to reset the PRAM or NVRAM:
- Disconnect all the peripherals connected to your MacBook Pro.
- Restart your MacBook Pro.
- Before the gray screen shows, press the Command, P, R, and Option keys.
- Hold all the keys until your MacBook Pro restarts. You should then hear another startup sound.
- Release all the keys.
- If the gray screen no longer appears, reconnect your peripherals.
If you're still unlucky, it's time to get serious and try the last few solutions.
Solution #5: Repair Your Startup Drive.
You have already explored all possible solutions on how to fix your gray screen problems on MacBook Pro OS High Sierra, but the problem persists. Don't worry, though, as you still have another solution!
While this can be a bit tricky, repairing your Startup Drive might just work for you. Here's how:
- Start your MacBook Pro from an OS X Installer DVD.
- Insert the DVD installer into your optical drive.
- Switch off your MacBook Pro.
- Restart your Mac while pressing the C key. It will then take you to a menu for booting your MacBook Pro from the optical drive. You have three options from here. These are:
- Start from an OS X Installer DVD
- Start from the Recovery HD
- Start from an External Drive
- Select one and follow the instructions provided.
If your MacBook Pro launches successfully with any of the three methods, then great. But if not, well, you still have one last solution to try.
Solution #6: Reinstall High Sierra.
If all else fails, you may reinstall High Sierra. Simply follow these steps:
- Shut down your MacBook Pro.
- Press the CMD + R keys and switch on your MacBook Pro again.
- A new window will pop up with the option Reinstall MacBook Pro OS High Sierra. Select it.
- Wait for the process to finish.
Hopefully, this solution has now fixed your problem.
Conclusion
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Gray screen problems are common, but they may only be a result of peripheral or OS installation issues. We just don't pay attention to the tiny things that may affect our MacBook's performance, hence they accumulate and worsen over time. Lucky for you, you're already spared from the time-consuming process of searching for solutions as we compiled the possible solutions to your gray screen problems.
There is one last thing you can do now to prevent MacBook Pro issues from popping up. Install Outbyte Mac Repair on your MacBook Pro. This amazing tool can be used to run a quick scan on your MacBook to help you identify erroneous files or documents that may cause problems in the long run.
Did the solutions above help you with your gray screen problems on your MacBook Pro? Let us know below!
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Please take each of these steps that you haven't already tried. Some of them may not be applicable to your model or your situation. Stop when the problem is resolved.
To restart an unresponsive computer, press and hold the power button for a few seconds until the power shuts off, then release, wait a few more seconds, and press it again briefly.
Step 1
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The first step in dealing with a startup failure is to secure the data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since the last backup, you can skip this step.
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a. Start up from the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under 'Instructions for backing up to an external hard disk via Disk Utility.' The article refers to starting up from a DVD, but the procedure in Recovery mode is the same. You don't need a DVD if you're running OS X 10.7 or later.
b. If Step 1a fails because of disk errors, and no other Mac is available, then you may be able to salvage some of your files by copying them in the Finder. If you already have an external drive with OS X installed, start up from it. Otherwise, if you have Internet access, follow the instructions on this page to prepare the external drive and install OS X on it. You'll use the Recovery installer, rather than downloading it from the App Store.
c. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, start the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
d. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
If you've started from an external drive, make sure that the internal startup volume is selected in the Startup Disk pane of System Preferences.
Start up in safe mode. Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can't do this. If you don't see the words 'Safe Boot' in the startup screen, you haven't started in safe mode. Ask for further instructions.
Safe mode is much slower to start and run than normal, and some things won't work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know the login password in order to log in. If you've forgotten the password, you will need to reset it before you begin.
If the startup progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, the startup volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 9. If you ever have another problem with the drive, replace it immediately.
If you can start and log in in safe mode, empty the Trash, and then open the Finder Info window on the startup volume ('Macintosh HD,' unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then restart as usual (i.e., not in safe mode.)
If the startup process hangs again, the problem is likely caused by third-party software that you installed. Ask for further instructions.
Step 3
If the startup process stops at a plain gray screen with a movable cursor, then the login dialog may be active but not visible because of a bug. You might be able to log in by using the arrow keys or the cursor to select the password field and typing your password as usual.
Step 4
If Step 3 fails, the startup volume may be full. If you had previously seen warnings of low disk space, this is almost certainly the case. You might be able to start up in safe mode even though you can't start up normally. Otherwise, start up from an external drive, or else use the technique in Step 1b, 1c, or 1d to mount the internal drive and delete some files. According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation.
Step 5
If a desktop Mac (without a built-in keyboard) hangs at a plain gray screen with a movable cursor, the keyboard may not be recognized. Press and hold the button on the side of an Apple wireless keyboard to make it discoverable. If need be, replace or recharge the batteries. If you're using a USB keyboard connected to a hub, connect it to a built-in port.
Step 6
Sometimes a startup failure can be resolved by resetting the NVRAM.
Step 7
If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
Step 8
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to start up, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can start up now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
Step 9
Launch Disk Utility in Recovery mode (see Step 1.) Select the startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line 'Permissions repair complete' at the end of the output. Then restart as usual.
Step 10
If the startup device is an aftermarket SSD, it may need a firmware update and/or a forced 'garbage collection.' Instructions for doing this with a Crucial-branded SSD were posted here. Some of those instructions may apply to other brands of SSD, but you should check with the vendor's tech support.
Step 11
Reinstall the OS. If the Mac was upgraded from an older version of OS X, you'll need the Apple ID and password you used to upgrade.
Step 12
Do as in Step 11, but this time erase the startup volume in Disk Utility before installing. The system should automatically restart into the Setup Assistant. Follow the prompts to transfer the data from a Time Machine or other backup.
Step 13
This step applies only to models that have a logic-board ('PRAM') battery: all Mac Pro's, MacBooks with a removable main battery, and some others (not current models.) A dead logic-board battery can cause a startup failure. Typically the failure will be preceded by loss of the settings for the startup disk and system clock. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
Step 14
If you get this far, you're probably dealing with a hardware fault. Make a 'Genius' appointment at an Apple Store, or go to another authorized service provider.
Nov 9, 2015 12:14 PM
