MBP stuck at gray boot screen with apple logo, loading wheel, and loading bar

Today i was using my mac book pro and it was working just fine, and i shut it off and when i tried to use it later I get stuck at this screen. I have never seen this loading bar and it doesnt seem to do any thing because it only goes as far as it is in the picture then it dissapears leaving me stuck at the apple logo and the loading wheel.
Sadly i cant get my warranty information since i cant get past boot up, and the serial number in the battery area is to small to read (the letters or numbers are literaly blobs)
I have tried holding shift at boot and it does nothing and holding alt during boot only shows the hard drive icon, but when i click it im back to stage 1.

Spaghettipopsicle wrote:
Today i was using my mac book pro and it was working just fine, and i shut it off and when i tried to use it later I get stuck at this screen.
Your Mac is attempting to fix your drive and it's not succeeding, you can let it go for some time and see if it clears up.
https://support.apple.com/kb/TS3148
Do these steps.
If on 10.6 stick a clean and polished 10.6 disk into the computer and reboot holding the c key down.
If on 10.7 hold the command and r keys and boot, you'll enter Lion Recovery Partition.
Under the Utilities Menu is Disk Utility, use it to Repair Disk (note any failures!) and Repair Permissions (ignore list)
See if your computer boots, if not repeat the above steps and use Disk Utility to format a blank external drive, Partiiton Tab, Option: GUID, format OS X extended (J) and click apply.
Next quit and install 10.6/10.7 onto the external drive, when that completes, hold the option key down and you can boot from it. Retrieve your files off the internal drive to the external.
If you cant' see your internal drive in Disk Utility, it's likely failed.
Sometimes you can software like Data Rescue, installed on another Mac or a external boot drive and "read" the failed drive for any salvagable data, provided it's still working mechnically. Good thing about DataResue supposedly is you don't pay unless it's sure it can recover some of your files. I never used it as I make many backups, or bootable clones.
Mechanically failed drives data can only be recovered by platter dissection, a very expensve process.
There is several ways to read the drive, take it out and place it in a enclosure or use a IDE/SATA to USB adapter cable with another Mac or PC (with MacDrive) or use another Mac and Firewire Target Disk Mode (hold T on the sick Mac)
https://support.apple.com/kb/ht1661
If the drive works and you got your data off of it, you can erase it (use the Zero option, GUID/OS X Ext.J) and reinstall OS X, same user name as before, update, (Repair Disk from disk if on 10.6.8) install programs and return files last (and in that order exactly) your machine will be as close as possible to the way it was.
Lastly, consider making a clone, this way you can simply option boot and use that.
http://www.bombich.com/
If the above is too much for you, please let a local Mac/Pc specialist assist you to prevent data loss.

Similar Messages

MacBook 2008 or 2009(?) stuck on grey boot screen with Apple logo and rotating gear under it.

See now, the real problem is that I can't even try Disk Utility because I don't have the original disks seeing as I bought this MacBook off of Amazon. I tried Safe Mode, Single User Mode, & resetting the PRAM. Basically everything I can do without the original disks. How do I do this?! Please help for I'm desperate.

Sounds like you've already read this Apple note. No bootable external backup hard drive? You might call Apple support to see if they still have the original OS X disks for your system, or you can buy OS X 10.6 from the online Apple for $20, which would be an upgrade, assuming you have at least 1GB of memory. Otherwise, take it into an Apple store for assistance.

MBP OS X Mavericks stuck on grey screen with Apple logo & spinning wheel

My Macbook Pro has been dead for slightly more than 6 months now (I don't use it as regularly as my school laptop). A few days before its death earlier this year, I upgraded the OS from Mountain Lion to OS X Mavericks (not sure exactly which version). A few days after that, connected to terrible internet, the Dropbox app tried to sync a load of files and then all of sudden, my Macbook Pro shut down. Now every time I turn it on, all I see is the infamous grey screen with the Apple logo and the spinning wheel. I tried fixing it multiple times, following instructions on other discussions, but to no avail. I'm also hesitant on taking it to the Apple store because I have some important files (read: holiday photos) on it which haven't been backed up yet and I don't want to lose them. Hope somebody can provide me with easy-to-follow instructions on how to revive it! Thank you.

If you have not tried this, try this.
Go step by step and test.
http://support.apple.com/kb/ts2570
http://support.apple.com/kb/PH14062
Startup in Safe Mode
http://support.apple.com/kb/PH14204?viewlocale=en_US
Repair Disk.
Steps 1 through 7
http://support.apple.com/kb/PH5836
Reset PRAM
http://support.apple.com/kb/ph14222
Reinstall OS X Mavericks
http://support.apple.com/kb/PH13871

Stuck on gray startup screen, no apple logo - help?!

My Powerbook chimes when I turn it on, then goes to the gray screen, but sits there, does not move forward, no apple logo, no spinning circle, no beachball, nothing. I can hold the power button to turn it off, again to turn it back on, etc., but nothing else. I tried starting in safe mode, same exact result. Tried starting from the leopard install dvd, still nothing. The DVD drive makes the noises as if it's reading the disc, but the computer does not get past the gray screen, and now I can't even get the disc out. Any recommendations??

Jason: Your present situation is not clear from your posts. Do you still have an installer DVD stuck in your optical drive? When you power up the machine while holding down the "c" key with the installer DVD in the drive, does the machine start up? If not, exactly what does happen?
Presumably there is an OS installed on your hard drive, because if there weren't, you would never have been able to get onto Hotmail. Does the Powerbook start up from its hard drive when no installer disc is in the optical drive? If not, exactly what does happen?

IMac g5 is stuck at white startup screen with apple logo & spinning circle

Hello,
i had a digital copy of os x leopard and i was trying to reinstall it, so i would double click on install mac os x, and it would tell me to restart, i would do this but nothing happened so i had to mount the disk again and double click install mac os x, and it told me to restart again. so i looked up how to install leopard from a dmg file, and it said to restore the dmg to the drive, so i went into disk utility and i put the source as the dmg, and the destination i dragged the imac hdd icon. it finished and i was gonna select the leopard file as my startup disk in system preferences, but that wouldnt run. i then noticed some of the letters were missing on the name of the icons in the dock, so i just restarted the computer, but it got stuck on the white screen. i tried lots of stuff like turning on while holding shift, but it didnt do anything, and i tried with cmd+s and that gave me some black command prompt where i typed/sbin/fsck -fy and that did some stuff and it said my drive was okay, but it still wont start up. What do i do?!?!

im trying tiger right now, first i wanna reinstall tiger, than leopard next, you know, one problem at a time. i dunno maybe, heres the readme:
Read Before You Install
Mac OS X
Read this document before you install Mac OS X. It includes information about
supported computers, system requirements, and installing Mac OS X.
For more information about Mac OS X, visit this website:
• www.apple.com/macosx/
For the latest information about using Mac OS X, connect to the Internet and open Mac
Help. To open Mac Help, click the Help menu in the Finder and choose Mac Help.
For information about the support available for this product, see the AppleCare
Software Services and Support Guide included with Mac OS X.
System requirements
You must have a Macintosh computer with:
• a PowerPC G3, G4, or G5 processor
• a DVD drive
• built-in FireWire
• at least 256 MB of RAM
• a built-in display or a display connected to an Apple-supplied video card supported
by your computer
• at least 3 GB of disk space available, or 4 GB if you install the developer tools
If you see a message in the Installer that you do not have enough disk space to install
Mac OS X, you can deselect items to save space. To deselect items, click Custom Install
in the Easy Install panel.
Updating your computer’s firmware
You may need to update your computer’s firmware. It’s best to update the firmware
before installing Mac OS X. If you haven’t started the Mac OS X Installer, check the
Apple Software Updates website to see if there are any firmware updates for your
computer:
• www.apple.com/support/downloads/
If you don’t do this, you may see a message that you need to update your computer’s
firmware when you start the Installer. To update the firmware, you will need to quit the
Installer and restart your computer using your current startup disk, then check the
Software Updates website.
If you have problems with your computer after installing this version of Mac OS X, you
might need to update the firmware even though you did not see a message when you
installed the software. Check the Software Updates website for recent firmware updates
for your computer.
Starting installation
To start installing Mac OS X, insert the Mac OS X Install DVD and double-click the
Install Mac OS X icon:
You can also start installing Mac OS X by inserting the Install DVD and restarting your
computer while holding down the C key, or by selecting the Install DVD as your startup
disk using Startup Disk preferences.
Quitting the Installer
If you need to quit the Installer before you click Install in the Easy Install or Custom
Install pane, choose Quit Installer from the Installer application menu, then click
Startup Disk to select a startup disk for your computer.
If you have already clicked Install, wait until installation finishes.
Advice about hardware compatibility
Installing on a Power Macintosh G3 (Blue and White)
If you have a Power Macintosh G3 (Blue and White) that came with an Apple SCSI hard
disk, do not choose UNIX File System (UFS) as the format for the destination disk.
Installing on a computer with a third-party SCSI card
If you have a third-party SCSI card installed in your computer and you cannot start up
Mac OS X, attach a disk drive or terminator to one of the card’s ports. If you continue
to have problems, try removing the card. Contact the manufacturer of the card for
more information about using the card with Mac OS X.
Installing on a computer with a third-party video card
If you have a third-party video card installed in your computer, you may need to
remove it before you install Mac OS X. Contact the manufacturer of the card for more
information about using the card with Mac OS X.
Advice about installing Mac OS X
Erasing and formatting your disk
When you install Mac OS X, you can erase the destination disk you select. In the “Select
a Destination” pane of the Installer, click the Options button. Select Erase and Install
then choose a format. In most cases, choose Mac OS Extended (Journaled).
Important Do not choose UNIX File System (UFS) unless you need to work with this
format. If you choose UFS, Mac OS 9 and all Mac OS 9 applications must be installed on
a Mac OS Extended format disk to use them with the Classic environment.
To install Mac OS X on the same disk or disk partition as Mac OS 9, the disk must be in
Mac OS Extended format. If it isn’t, quit the Installer and back up your files, then
reformat the disk.
You can also partition your hard disk into several volumes before you install Mac OS X.
In the Installer, choose Utilities > Open Disk Utility and click Partition. Partitioning the
disk erases the entire disk, so be sure to back up your files first.
Installing optional software
Easy Install installs all the software you need to use Mac OS X, but does not install
some additional software. If you want to install this optional software or you don’t
want to install all the software installed using Easy Install, click Custom Install and
select the items you want to install. If you want to install this optional software later,
insert the Mac OS X Install DVD and double-click Optional Installs.
Locating the Installer log
When you install Mac OS X, the Installer saves a log of the installation. To see the log,
open Console (in /Applications/Utilities), click Logs, then click the triangle next to /
var/log and select install.log.
Reinstalling Mac OS X
To reinstall Mac OS X, insert the Mac OS X Install DVD and double-click the Install
Mac OS X icon, then follow the onscreen instructions. When you see the “Select a
Destination” pane, click Options to select how to install Mac OS X:
• Select “Archive and Install” to save your existing system files, user accounts and
their home folders, and existing network settings. The Installer saves files in a
folder named Previous System so that you can copy them to an appropriate location
later. You cannot start up your computer using the Previous System folder.
• Select “Erase and Install” to erase the destination volume and install a new copy of
Mac OS X. If you select this option, you will lose all your files and the software you
have installed on the destination volume, so you may want to back it up first. If you
select this option, you can choose the format for the volume. In most cases, choose
Mac OS Extended (Journaled) from the pop-up menu.
Setting up and connecting to the Internet
If you have an existing Internet service provider (ISP) and you’re installing Mac OS X for
the first time, you need to enter your Internet connection information when installation
finishes. Be sure to have the information available. If you have problems connecting to
the Internet, contact your ISP to make sure you have the correct information.
Advice about using Mac OS X
If you have problems starting up
If you cannot start up your computer, insert the Mac OS X Install DVD and restart your
computer while holding down the C key. Choose, Choose > Open Disk Utility, then
click First Aid to repair your disk.
If you have problems starting up your computer and you have devices connected to
your computer such as FireWire drives, USB printers, or external displays, try
disconnecting them before starting up again.
Upgrading your applications and other software
For best results with Mac OS X, look for versions of your applications that are built for
Mac OS X. Check the Mac OS X website for information about available applications:
• www.apple.com/macosx/
If you cannot find Mac OS X versions, upgrade to the latest Mac OS 9 version to use
with the Mac OS X Classic environment. Check with the manufacturers for the latest
updates.
Using POP email accounts and On My Mac mailboxes in Tiger and Panther
If you have a shared home folder and you access a POP email account using Mail in
both Mac OS X Panther and Mac OS X Tiger, you will not see messages that you retrieve
in one version when you switch to the other.
As an alternative, you can deselect the option to remove copies from the server after
retrieving your messages. To change this option, open the Accounts pane of Mail
preferences and click Advanced.
You will not see messages saved in a mailbox on your computer when you switch from
one version to another. To avoid this problem, use separate home folders for each
version of Mac OS X.
Your IMAP account will synchronize automatically when you switch between Mail in
Tiger and Panther.
© 2005 Apple Computer, Inc. All rights reserved. Apple, the Apple logo, FireWire, Macintosh, Mac OS, and
Power Macintosh are trademarks of Apple Computer, Inc., registered in the U.S. and other countries.
PowerPC is a trademark of International Business Corporation, used under license therefrom.
it says that a imac g5 can work

My ipod touch is stuck on the black screen with apple logo?

Yesterday I restored my Ipod Touch back to factory settings...thought everything was fine until I realized my wifi option was grey and unclickable and read "no wifi", so I went to settings and hit "restore network settings". The ipod shut off and wont turn on since. Ive tried restarting multiple times, all it does is stay on the black screen with the apple logo. Help please?

If it's off you should push the top right button and the home button for a few seconds. Rebooting like that always worked for me!

IPhone OS 2.0 at Black Screen with Apple Logo, Apps crash and not run

Apple Support: Do not delete this. I am complying with your requests. According to your T&C, I must state my problems in question form to ask the community or your teams for help in a constructive way. I believe my original post was only playfully negative, but since I am complying now, I would expect that you do not delete this, otherwise you're simplying just trying to put spin on a buggy release. PLEASE HELP. I have not heard back from Feedback, and phone support continually says to RESTORE the phone, which only solves these problems for a few hours.
1) My iPhone OS 2.0 is very slow, even with a virgin restore with no apps or synchronized content.
2) My iPhone OS 2.0 reboots at random times.
3) My PURCHASED applications crash randomly, under unreproducible conditions.
4) Free applications crash randomly.
5) My iPhone OS 2.0 will not boot after an irregular interval of reboots, showing only the black screen with the apple logo. Letting this sit for 8 hours simply drains the battery until it goes pitch black. POWER+DOWN_ARROW and an iTunes restore is the only way to recover. This process takes hours to complete.
I have gone several days without a working phone while away from the iTunes at home to restore my contacts and other data vital to the operation of my business, not to mention a phone that actually works to make and receive calls.
As stated in the previous post, I'm a loyal Apple customer, and have spent considerable time evangelizing the brand, and have spent hundreds of thousands of dollars by purchasing Apple laptops instead of Dell.
Can you please tell me how to solve this? If there is no firmware problem, please give me a real solution to fix this. I am not the only one with this problem.
Thank you in advance,
Kevin

Many of us have this problem. I've had it several times now.
The only way to fix it, is to restore the iPhone.
I know it seems like it wont boot, or wont do anything, but it will... just do this.
Start Itunes. Turn off the iPhone, now put it in the dock or plug it into the USB cable, WHILE holding the top button on the phone down. Keep holding it down. It will then show a connect cable icon on the phone. It should show up in iTunes at this point. Proceed to restore the phone per screen instructions.
Once its back up and booting and working etc...
MAKE SURE... you DO NOT... install any application or delete any application on your iphone. IF you dare do so.... MAKE ABSOLUTELY certain you do not do ANYTHING at the same time. That means NEVER DL an app from itunes store on your phone, and while it is installing, ... avoid clicking on anything, touching the phone, starting a different app, going back to the itunes store...
In other words... If you try to multitask... it causes some weird bug.

White screen with Apple logo/ not booting

I recently tried to install the software for the "Flip" video camcorder and upon restarting my computer after installation, my computer is stuck on the white screen with Apple Logo, 'thinking" wheel spinning, and fans going full blast. I tried forcing a stop with turning computer off by holding power button in the back until system powered off. When I started the computer back up, it did the same thing.
What is the likely problem and how do I fix this. I bought the computer used and do not have the OS X software that comes with the computer originally.

You really need those discs. You can either buy a BLACK retail version of Leopard and use that or you can call Apple at 800-767-2775 and for a nominal fee they will send you the proper discs for your model. You will need the serial number, which you can find on the bottom of the foot of your computer. Do not buy any grey discs, they are machine specific and will not work on yours. In the meantime, try starting by resetting the PRAM and the SMU
1. Shut down the computer.
2. Unplug the computer's power cord.
3. Press and hold the power button for 5 seconds.
4. Release the power button.
5. Attach the computers power cable.
6. Press the power button to turn on the computer.
You need to make sure also, that the software that comes with your Flip is compatible with the OS version you are running.
Let us know how you make out,

Computer doesn't boot up running on white screen with apple logo

Mac Pro 13/2.5 on powering up just stays on white boot screen with apple logo and spinning booting spiral. Nothing then happens

Try the steps in this support article:
http://support.apple.com/kb/ts2570
Ciao.

Imac does not start white screen with apple logo.......

Hi guys, my brand new Imac 21.5 got stuck on the white screen with apple logo and nonstop little wheel, but it never gets out of it....Disconnected everything else restarted but still nothing...stuck at the same screen. Please i need help, the machine is only 3 months old!!!

Hi, do you have AppleCare?
Call AppleHelp in any event 1-800-275-2273
You could try booting from your discs (Disc#1) that came with your Mac -
...L

Computer doesn't boot, stuck in white screen with Apple logo

I got a friend that has a MacBook 2.0GHz, Black. The computer had some sort of problem so he took out the HD and placed it into another computer (MacBook 2.2GHz, Black). For some reason whenever the computer boots, it gets stuck in the white screen with the gray Apple logo, and shows up a bar, as if it's loading some sort of firmware update. It never advances, and it doesn't go thru.
If he takes the same HD and puts it into an enclosure, first it would take a while to mount in another computer, and afterwards it would give some errors, but now it doesn't even load.
Before he had the issue with his original computer everything was working fine, and there was no update going on when the computer got broken. The problem that that computer has isn't related to the HD.

If you have physically removed the drive and connected it to another computer and it "took a while to mount" then it sounds like the drive itself is failing. Hopefully he maintains backups.
Boot the MacBook in "verbose" mode (press and hold down option+v while powering up)
http://support.apple.com/kb/HT1492
In this mode you will see all the boot messages scroll by instead of the typical white screen with Apple logo. You will likely be able to see messages indicating what the computer is trying to do -- for example messages indicating that having failures or retrying to read the hard drive.
The access arms on hard drives have to be precisely located above the "tracks" on the disk in order to read data. As the drive ages & wears, the accuracy of the arms can become sloppy, causing the read/write head to no longer be precisely located over a track. This results in failure to read correctly. Most drives have a useful life of about 5 years -- after which the failure rate will go up substantially. Fortunately, replacement hard drives are cheap.

IMac G5 boots to gray screen with Apple logo only

iMac G5 boots to gray screen with apple logo only.
What I've tried:
Won't boot to safe mode.
Reset PRAM several times.
Won't boot to install disk with "C" depressed at startup.
Will boot to screen showing HD and arrow buttons when "alt" depressed at startup. But clicking HD icon and proceed arrow just goes back to the gray screen with apple logo. Note the HD icon has a blue "x" symbol.
With install disc in, will boot with "alt" depressed at startup to three icons, HD, install disc, and apple hardware test. Both HD and install disc icons have the blue "x" symbol and won't run. BUT the apple hardware test icon doesn't have a blue "x" and runs. Extended test says all hardware OK.
Finally, startup in single user mode with "apple-s" depressed goes to a non-gui white text (UNIX core?) which gives blocks of repetitive text starting "unresolved kernal trap (cpu0)...(lots of date)...latest crash.....backtrace:" My rough guide to the Mac gives me text to enter at that point but I can't input to the screen.
That's where I'm stuck.

You're encountering a kernel panic.
[I got a black screen telling me I had to reboot in many languages, what was it?|http://www.dslreports.com/faq/4970] Also has detailed description of what happens during a KP.
[Apple docs: What's a kernel panic? (Mac OS X)|http://docs.info.apple.com/article.html?artnum=106227]
[Topic : kmosx: Kernel Panics? Don't panic too !|http://discussions.apple.com/thread.jspa?threadID=121923]
[X-Lab: Resolving Kernel Panics|http://www.thexlab.com/faqs/kernelpanics.html]
[Tutorial: Avoiding and eliminating Kernel panics|http://www.macfixit.com/article.php?story=20060911080447777]
[Tutorial: An introduction to reading Mac OS X crash reports|http://www.macfixit.com/article.php?story=20060309075929717]
[12-Step Program to Isolate Freezes and/or Kernel Panics|http://macosg.com/group/viewtopic.php?t=800]
[Texas Mac Man's post on kernel panics|http://discussions.apple.com/thread.jspa?threadID=1723768&tstart=0]
These are often attributed to hardware problems though they can also be due to corruption of software. Since you're also encountering it with your DVD I'd tend more towards the former. Your computer seems to be passing the early stage POST tests for RAM. Apple Hardware Test also seems to be passing but [X-Lab: The Apple Hardware Test|http://www.thexlab.com/faqs/aht.html] document recommends using this in loop mode to test for intermittent problems.
Sometimes the crash logs (all the error messages you are seeing) contain information about the problem, but there's an art to reading those.

MacBook will not start. I have restarted with original CD. I have used Utilities and "no problem" with hard drive. I have reset PRAM. I have tried safe boot. Nothing is work. Gray screen with Apple logo and rotating wheel. Thanks for any suggestions!

MacBook will not start. I have restarted with original CD. I have used Utilities and "no problem" with hard drive. I have reset PRAM. I have tried safe boot. Nothing is work. Gray screen with Apple logo and rotating wheel. Thanks for any suggestions!

Snow Leopard is a Mac OS X version. You say that it's the version you have in your Mac (10.6.8). Do a back up of your files, format the hard drive (using Disk Utility) and reinstall again

4s bricked after trying new update, stuck with black screen with apple logo how can i fix this

Update bricked my 4s
phone , stuck with black screen with apple logo ..
how can I fix this

Greetings r1042,
Welcome to the Apple Support Communities!
I understand that your iPhone is not booting up past the Apple logo. In this situation, I would recommend working through the troubleshooting steps located in the attached article.
If your iPhone, iPad, or iPod touch doesn't respond or doesn't turn on - Apple Support
If your device gets stuck during startup
When starting up, you might see the Apple logo or a red or blue screen for a long time, or your device might restart again. Try these steps:
Make sure that you have iTunes 12 or later on your computer.
Put your device in recovery mode.
When you get the option to restore or update, select Update. This will reinstall iOS without erasing your data.
Have a great day,
Joe

Imac wont boot - i get a white screen with apple logo, and it loads to about 10%, then screen goes black

imac wont boot - i get a white screen with apple logo, and it loads to about 10%, then screen goes black

Hey there mtriest,
It sounds like you are unable to boot the iMac successfully as it keeps shutting down when you try to boot. I suggest the troubleshooting from the following article named:
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/ts2570
Disconnect, test peripheral devices and network cables
Note: "Peripheral devices" refers to external devices other than what came with your Mac, such as hard drives, printers, or hubs that you connect via a USB or FireWire cable.
Shut down your Mac. If necessary, hold your Mac's power button for several seconds to force it to power down.
Disconnect all peripheral devices such as external hard drives or printers (leave only the display, a keyboard, and mouse connected).
Disconnect any Ethernet cables.
Start up your Mac.
If you can start up this way, one or more of your peripheral devices (or installed software related to the device) is probably causing the gray screen issue. Connect one device, then restart your Mac to test for the issue. Repeat the process until you locate the device at issue. Make sure the device is powered if it needs to be to operate correctly. Check with the manufacturer of the device for support or possible software driver or firmware updates that may be available for the device. Try a different cable with the device if possible (such as a different USB or FireWire cable).
Note: If you have multiple peripheral devices and the issue only occurs when they are all connected, but not when each device is the only peripheral connected, see the Additional Information section below.
If you are using a desktop Mac with a third-party keyboard and/or mouse device, and the issue still occurs, try starting up with an Apple keyboard and mouse connected instead. Try starting with no keyboard and mouse connected, then connect them after start up. Also, try a different USB port on your Mac.
If the gray screen issue persists with no devices connected, go to the next section (with the peripherals still disconnected).
Perform a Safe BootSimply performing a Safe Boot may resolve this issue.
Shut down your Mac. If necessary, hold your Mac's power button for several seconds to force it to power down.
Start your Mac, then immediately hold the Shift key. This performs a Safe Boot. Advanced tip: If you want to see the status of a Safe Boot as it progresses, you can hold Shift-Command-V during start up (instead of just Shift).
Note: A Safe Boot takes longer than a typical start up because it includes a disk check and other operations.
If your Mac starts up as expected, immediately try restarting.
If the Safe Boot does not work, or the restart after a successful Safe Boot does not work, go to the next section.
There is additional information in the article with further troubleshooting if needed.
Thank you for using Apple Support Communities.
Cheers,
Sterling

MBP stuck at gray boot screen with apple logo, loading wheel, and loading bar

Similar Messages

Maybe you are looking for