Cannot boot (Hangs on Apple logo/spinning wheel)

I just turned off my computer by holding down the power button after Parallels froze on me, and now my Mac won't start up. It hangs on the white screen with the Apple logo and spinning wheel. Some more info:
1. I can get into Hardware Test and Mac OS X Installer
2. I have a Time Machine backup (if nothing else works)
3. I have tried Disk Utility and Hardware Test and they both tell me everything looks "OK"
Do I have any other options besides reinstalling Leopard? And what could have caused this to happen???

Hi
im experiencing the same problem as well
i downloaded and installed a few updates on sunday and i thought it was normal for the apple logo and spinning wheel to come out after the update
i went to bed thinking that it would take awhile
when i woke up it was still stuck at the grey screen
can any1 please help?
i dont hv my dvds with me (studying in nz, dvds are at home)
ive tried pressing shift to go into safe mode but i cant (maybe doing it wrongly)
n ive tried resetting pram
btw the MBP im using was on tiger but i upgraded to leopard last year
any suggestions please, really need to get on my assignments and all :P

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About imac (early 2008 24") stuck on grey screen apple logo spinning wheel

HI all just wondering if any body has experienced the grey screen apple logo spinning wheel and also switches off and back on all by itself after 5-10 minutes in the past or recent.
how did you get on did you sort it?would like to read some feedback on this subject thanks

Generally that indicates a serious problem with the hard drive.
Power down, hold alt key at power on, what shows as boot choices?
"Try Disk Utility
1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu at top of the screen. (In Mac OS X 10.4 or later, you must select your language first.)
*Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
3. Click the First Aid tab.
4. Select your Mac OS X volume.
5. Click Repair Disk, (not Repair Permissions). Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
Report what happens or doesn't please.

Will not boot up. Apple shows, spinning wheel shows, a bar comes up on the bottom. It gets to the end of the bar and shuts down.

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Mac wont boot, hangs at apple logo screen

Hello everyone,
I have a 2006 Imac. This morning I tried to boot and it hung at the silver/white screen with the Apple logo and the spinning circle of lines below it. The computer will just hang at this screen.
Every time I tried to boot I can eventually hear the hard drive turn off. I recognize the sound when the computer was working and I put it to sleep it made the same sound. Anyways, it will hang on that screen for however long before I turn it off. I am no expert with macs, I tried loading the install disc but it wouldn't even load that and now I can't seem to eject the disc either. Please help!

I have been having this problem for the last several weeks on my MacBook Pro–I think a 2006 also. Mine will hang just before the Apple logo so the whole screen will be silver. Every time this happens I turn it off using the power button and just try again. Usually on the second try it works, sometimes the third. I've been experimenting with how long I hold the power button down, although it shouldn't be too sensitive to that and I don't think I am finding a correlation. I have had this occur in the past but only as flukes, not as a consistent pattern like lately. I'm getting worried that someday this thing will just not start up.

Help! Stuck on white/grey screen apple logo spinning wheel

Hi, I wonder if anyone can help me?
I have a MacBook pro snow leopard 10.6 It won't start up it freezes on the white/grey screen with the apple logo. I have tried it in safe mode it has the bar underneath as it loads up to half way it goes off & the spinning wheel just carries on spinning forever!
I have tried cmd & v typed in a few things that I saw other people do then on the black screen white text the page is full of Disk0s2: I/O Error   tried rebooting but same thing happens doesn't start up.
Then I put my mac os x snow leopard 10.6.3 installation, features and refinements disc in but still nothing! I'm stuck anybody know what to do?
Thanks in advance if you can help me.

If it won't boot with the just the c key held down off the disk, it could mean there is a firmware password set.
If it won't boot off the disk with just the option/alt key held down, that means firmware has been wiped if all you see is a white screen.
If it has a firmware password, it should have asked you for it with a screen with a lock icon on it.
However it also could mean there is a hardware problem or the 10.6 disk is dirty, scratched, defective or not from Apple (warz).
Or your keyboard is bad or your using a external one and not the built in keyboard.
I think you might have to look into the possibility your EFI firmware has been hosed.
See this section of my User Tip here: ..Step by Step to fix your Mac
Need machine/operating system identification help?
Find the serial number, thus the model number and thus gives the operating system that originally came with the machine. However gives not what operating system version the boot drive was later upgraded to. Do not use older OS X verisons to repair newer verisons. It is possible to use the original operating system version installed on another boot drive to recover files from a later operating system non-booting drive.
https://support.apple.com/kb/HT1159#MacBook_Pro   https://support.apple.com/kb/HT1349
https://support.apple.com/kb/HT1559   http://www.everymac.com/ultimate-mac-lookup/
If the computer just ignores the at boot key commands (without showing the firmware password request) especially if you boot to a white screen (no initial boot screen), it might be your EFI firmware stored in NVRAM memory has been wiped. EFI is like a powerful operating system type firmware that loads before OS X or Windows in Bootcamp loads, programs can be installed in EFI, even malicious ones. (why it's very important to trust the source of your instaled software)
To restore EFI you need to use the identification links above to find the exact model of your machine. Then use another computer to download the correct EFI firmware from this Apple.
https://support.apple.com/kb/HT1237
Then follow these instructions to burn it to a cd or USB (untested) and apply it to the non-booting Mac. It likley will take 2 reboots for it to take hold and return the at boot key commands.
https://support.apple.com/kb/HT2213
..Step by Step to fix your Mac

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

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.

Won't Start - Apple Logo / Spinning Wheel

I did a software update on my computer, when it restarted to install it said there was an error. Now the MBP won't get past the apple logo and spinning wheel.
I have tried the pram reset with no luck, and tried to start in safe mode with no luck. When I try these I get a gray bar under the spinning wheel which begins to fill then goes away.
Any help is greatly appreciated, thanks.

hi everyone,
the same happened to me. I did as proposed here. I wanted to reinstall Mac OS X from CD, but it never could find the hard disk. I tryed to use the Disk-repair utility. At the first time, I was not abele to use the "repair" function, so I just
had a check run. The repair-fuction did not finish properly, but I got the information, that there were too many threads ... ? At the second try, I could'n even use the check-function anymore. Is there a way to save something?

Cannot boot computer past apple logo, text is displayed saying aDebugger called panic ?

Hello
I have been having issues booting up an iMac computer, it doesn't get past the apple logo before prodcuing text and a greyed out screen that refers to 'Panics', 'double Panics', kernal traps, deBuggers?
Not sure where to even begin really.
It does the same when I try to boot in safe mode.
Any ideas, can some one show me where to begin?
cheers
Matthew Trott

Post the last KP report. Step one is to boot into safe mode (restart holding down SHIFT key). Also, See
Technical Note TN2063: Understanding and Debugging Kernel Panics,
Mac OS X Kernel Panic FAQ,
Resolving Kernel Panics,
How to troubleshoot a kernel panic,
Troubleshooting Mac OS X Kernel Panics, and
Tutorial: Avoiding and eliminating Kernel panics for more details.

Radeon 5770 in 2008 Mac Pro, won't boot - hangs at Apple logo screen??

Okay, so I had the Radeon 2600 XT and it kept giving me issues with pink & white checkerboards and freezing, then eventually wouldn't let me boot past the white/grey apple logo loading screen. Now, today I installed Apple Radeon 5770, just installed, got the MiniDisplay to DVI-D adapter and everything, but it STILL won't let me get past the white/grey apple screen! I can't seem to get the DVD drive to open either. Both of my hard drives have been working fine and I've even swapped slots and i still can't get past the white screen! What gives? I just dropped over $300 for this, so you can imagine my dismay and frustration. Can someone please help me with some ideas? Would be GREATLY appreciated.
It's a 2008 Mac Pro dual 2.8Ghz (3,1), running 10.5.8
M

Yeah, ok thanks for the response about the screen! So, I don't have 10.6.5. I'm running 10.5.8, which the Radeon 5770 says it needs 10.6.5, but -finally- I got my computer to boot up with the 5770 in it, on 10.5. Al I did was hold OPTION+ Power button and it took me to a blue screen, then to my 500 GB new HD. I then switched over to my other username on Macintosh HD (drive that came with the MacPro) and OSX loads fine! I can tell that it still needs to be on 10.6.5, so I can download the drivers because the text is ever so slightly fuzzy, and the color isn't tuned well (too much contrast) and images take a little longer to load/ are a bit laggy. I'm just glad it's up and running! No more pink transparent checkerboards, and loud *** fan sounds! I am wondering though, what was causing this hold up? Is it only booting up because I have the 10.5.2 install disc in the SuperDrive? I almost don't want to take it out and try without it, after the trouble i've had, just in case lol. I'd like to have an idea as to why, because I don't want to mask a problem, and have it eventually turn into a catastrophe.

My MacBook Pro is stuck on the white page with the apple logo, spinning wheel, and a loading bar. I have waited awhile and the bar hasn't filled up. Any advice?

I've never had this problem before and I could really use some help.

I would shut it down (or force shut it down by holding the power button,) and reboot holding the command - R
and get into the Recovery. Use the Diskutility to Repair Disk and Repair Permissions.
If errors show on Disk repair and corrected- run it again until it shows no errors found.
Relaunch as normal
http://support.apple.com/kb/HT4718

Mac won't boot up past apple logo and spinning wheel

It wasn't responding at all, so I had to hard shut off (Hold down power for 10 seconds). When I tried booting it up, this happened. So after 10 minutes, I tried to hard shut off again, and retry. Same problem. I didn't know what to do at that point. Needless to say it's now off, but when I try to turn it on, it goes to the apple logo, the wheel sins endlessly.
I just got a new hard drive and battery in January. I can't lose this because it has some VERY important information on it

ok, it MIGHT be the hard drive, but I don't know enough to be for sure. When I booted from the leopard disc, it couldn't dint my hard drive to install it on. I went to disc utility, and it did show my dvd drive, but not my hard drive. I tried booting without the disc and holding option down, and nothing happened. I tried booting holding down the s key, and a folder icon showed up that had a question mark over it.
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Message was edited by: basstone97

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In this situation where your iPhone will not start up past the Apple logo, there are several troubleshooting steps I would recommend. Please use the attached article as a reference to troubleshoot.
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