This means that your boot drive (usually the internal drive) is recognized by the system, but the OSX on it is defective in some way
If you hold the Shift key down all during boot up to boot into Safe (single user) mode, does the Desktop come up? If so it means that the drive is OK, and the OSX is mostly OK but some of the optional services and programs that load with your user profile are corrupted and causing a crash.
If not, it may mean that the drive is damaged, either logically or physically.
Do you have an external hard drive, a OSX DVD or an OSX Bootable USB stick to boot the machine with? P,lug that in, and boot holding the Option key down until you get the option to choose the external bootable drive.
Edit: You can also try an Internet Recovery Hold down Shift-Option-Command-R at bootup
https://support.apple.com/en-ca/HT201314
Google Make bootable OSX USB
https://support.apple.com/en-ca/HT201372
https://lifehacker.com/how-to-make-a-bootable-macos-sierra-usb-flash-drive-1786853248
https://diskmakerx.com/
Diskmaker X is the easiest way and it is free.
For any of the solutions you will need access to a working Mac.
Edit: The drive you buy depends on the model of Mac that you have. MacBook Pros pre-Retina (2012 and earlier) use SATA 2.5 inch drives, so you can install a SATA 2.5 inch SSD. Retina models have a complex choice of non-standard SSDs based on the model. Check OWC (macsales.com) for choices. If you do buy a replacement drive, you can also buy an enclosure for your Apple drive, so you can hook the Apple drive to your machine by USB. Then you can see if you can recover the data from it. There is a reasonable chance that you will still be able to see at least some of the data.
Testimonial: "How to make OSX Bootable USB"
SOURCE: My mac mini gets stuck
Start here...
Resolve startup issues and perform disk maintenance with Disk Utility and fsck
Mac OS X: How to start up in single-user or verbose mode
If that doesn't help, try booting into Safe Mode and see what happens, if it comes up hopefully another restart may solve, if not, you can at least use this as a starting point to try and resolve. Safe Mode will allow you to get around, surf, etc...
What is Safe Boot, Safe Mode?
Mac OS X: Starting up in Safe Mode
If Safe Mode comes up alright, I would install AppleJack, excellent troubleshooting article can be found here... Troubleshooting Tools: AppleJack
Another excellent free tool for performing maintenance is Onyx (be sure to download the right version for your system). Install the package, then run it, it will check your drive and the structure, after this, click on the automation tab and check on everything for Maintenance, Clear Cache, Cleaning, and check on Reset -> LaunchServices database and Mail's Envelope Index. When it completes, restart. Repeat any time something seems flaky, if not try to run at least once a month.
SOURCE: stuck on frozen apple screen
The only thing you have to do is when its stuck in recovery mode (apple logo displaying forever) you hold down the home button and plug it into the back of your computer while holding down the home button. It worked for me, and i think it will for everyone else too.Hope it helps.
SOURCE: Iphone 3g 3.0 stuck on iphone apple logo loading screen
If iPhone won't turn on, or the display freezes or doesn't respond
More resets:
Try This:
1. Remove Sim Card
2. Hold in 'Home' button and 'On/Off' button together until Apple logo appears
3. Replace Sim Card
4. Hold in 'Home' button and 'On/Off' button together until normal phone screen appears.
Also, Try this:
1.) Shut down the iPhone 3G.
2.) Start up iTunes
3.) Hold down HOME button on the iPhone 3G
4.) While keeping the HOME button depressed, plug in the Sync cable
5.) A message will pop up to ask if you want to reset.
6.) Just click YES and the reset process should start.
I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309
Testimonial: "the last option helped alot thanks x"
SOURCE: Stuck on black and white Apple logo screen
Hi,
Solution 1) Press Hold/Sleep & hold buttons at same time for 20 seconds, This may fix you problem.
If problem is still alive follow solution 2
Solution 2) Press Hold/Sleep & hold buttons at same time for 10 sec. & then leave only Hold/Sleep button keep home button pressed & connect you ipod to PC, That means you have to bring your ipod in DFU mode (Recovery mode) Check out this video for getting ipod touch in DFU mode http://www.youtube.com/watch?v=bITIiGswjFI
. itune must be run on PC.
It will ask you for restore. Accept Restore you ipod touch request by itune. Wait for few minutes while ipod being restored.
This process will solve your problem 100%. I have solved same problem for ipod touch. Follow this video http://www.youtube.com/watch?v=AQk4-krrNVk
Thanks.
If my solution help you please vote up me.
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