My iMac won't boot. I get the tone, the apple icon and the turning gear. I Unplugged, waited 1 min., restarted

My iMac wont't boot. I get the tone, the gray screen with apple icon and the turning gear. I Unplugged for 1 min.(+) and attempted to restart with the same result. Idid this twice. I reset the PRAM by holding Command Option P and R on restart. Same result. I held the Option key on restart and got a picture of 1 hard Disk. I hit Enter and got the same routine with the gray screen, apple icon and turning gear. I inseted the Hardware Test CD and ran the test, but it stopped at 2min and 27sec. That's after about 30 minutes of elapsed time -- it just gets hot so I held the power button to shut it off. Repeated and got to exactly same point in 2min and 27 sec. I'm stuck. Any ideas?

Unfortunately, it sounds like the startup disk is failing or has failed.
Which O S X is installed? Troubleshooting advice can depend on that information.

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My iMac won't boot i get an apple logo

my iMac won't boot i get an apple logo

Hi Paul,
If your iMac won't boot past a grey Apple screen, you may find the following article helpful:
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/ts2570
Regards,
- Brenden

My iMac won't boot up past the white screen with a grey apple and spinning icon

My iMac won't boot up past the white screen with a grey apple and spinning icon...please help!

command R did not result in anything different - still the white screen, etc. I do you Time Machine with and external hard drive, but I unplugged that. I have the installation DVD, but it doesn't seem to be reading it either.

My ipad is stuck on the apple icon and wont turn on..what do i do???

my ipad is stuck on the apple icon before you turn it on......and it wont turn on.

1: Connect the device to your computer and open iTunes.
2: If the device appears in iTunes, select and click Restore on the Summary pane.
3: If the device doesn't appear in iTunes, try using the steps in this article to force the device into recovery mode.

IMac won't boot - Failed to load extension com.apple.driver.applemacriscAGP

Hello, so I have an iMac G4 17" (running 10.4) and it was unfortunately not connected to a very good surge protector. The power surged and a fuse blew and now when I try starting it up it chimes and then just sits at the gray screen with the apple logo. Here's what I've tried:
Booting into verbose and single-user modes, this is what happens:
Failed to load extension com.apple.driver.applemacriscPCI
Couldn't alloc class AGP
Still waiting for root device
Still waiting for root device
Still waiting for root device etc.
Booting into Open firmware mode:
I'm able to do everything just fine, including resetting the nvram
Resetting PRAM:
Works fine, chimes when appropriate
Starting from Tiger install DVD:
Works just fine, I'm able to access all the utilities and was able to copy files off to a flash drive with the terminal. I used Disk Utility to repair the drive and repair the permissions, both of which ran successfully. I did a clean install of Tiger and then repaired the drive and permissions. I selected the new install on the hard drive as the default start-up disk. Still it sits at the gray screen and I still get those same errors in Verbose and Single-User modes.
I found the source code (a cpp file) for the com.apple.driver.applemacriscPCI, but don't really know how to compile it and what headers are necessary etc, and even if I did I don't know where I would put it since the problem can't be on the hard drive after I did a clean install. I have not yet tried completely reformatting the drive before an install but doesn't the installer do that anyway?
Any help would be much appreciated.
Message was edited by: Yost Smith

There may be some circuit damage in the computer; due to the surge of power.
Sometimes, a computer and its owner get lucky and when a surge disables a
Macintosh, a reset of the Power Management Unit (PMU) can help restore the
normal functions. Often, when this works, the computer may not go past the
grey screen at all, until the PMU is reset.
Instead of a simple surge protector, my computers are powered through a
backup power supply; an uninterruptable power unit with battery backup.
These also have automatic voltage regulation. Forget common protectors!
On the iMac G4 series, the PMU reset button is under the metal plate on the
bottom and is hard to see. There may be instructions with images available
online, perhaps in Apple Support's knowledge-base. This would also be in
the official service manual in pdf electronic documentation, for a tech repair.
How to reset PMU in iMac G4:
http://support.apple.com/kb/HT1712
You may have to see if the Apple Hardware Test can show error codes and
other hints of hardware damages; and perhaps a tech visit is not far off...
Good luck & happy computing!
edited.

My ipod is only showing the Apple Icon and wont turn on past that. It also won't connect to my computer so I can't restore it. What Should I do? Should I go to an Apple store and have them take a look at it?

I don't know what to do. It is only showing the apple icon. I've tried turning it on and off and it just stays on the icon. It also wont connect to my computer so I can;t restore it like I have been told to do. So should I take it into an apple store? Or is it a lost cause..??

Try:
- iOS: Not responding or does not turn on
- Also try DFU mode after try recovery mode
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
- If not successful and you can't fully turn the iOS device fully off, let the battery fully drain. After charging for an least an hour try the above again.
- Try on another computer
- If still not successful that usually indicates a hardware problem and an appointment at the Genius Bar of an Apple store is in order.
Apple Retail Store - Genius Bar

My Imac won't start, just get the chime and white screen.

I tried holding command R but nothing happens, just a white screen! What can I try next?
I don' t know what model or OS I have...should dig out my paperwork...

Thanks SO MUCH! I am having nightmares about all that could be lost. If the fan can be fixed, then I can cope with the backing up and maybe relieve the hard drive so it gets faster. As Murphy's law would have it, I just bought an external drive but haven't had a chance to set it up to automatically back up. Your reply makes me feel much better... There is hope that I can lip along with this old iMac until I can afford a new one.

My iMac won't boot up it has a gray screen and makes a steady beeping sound

My iMac won't boot up it makes a steady beeping sound and has a gray screen, occasionally it shows a picture of a file with a question mark blinking in the center, can anyone help

The blinking question mark indicates that the firmware could not find a valid Operating System on your machine.
Your harddrive may have failed. Your filesystem may have bcome corrupted.

My imac won't boot up. I get a white screen with the apple logo and the spinning spiral--any ideas?

my imac won't boot up. I get a white screen with the apple logo and the spinning spiral--any ideas?
I have started having trouble since i had to upgrade OS the latest in July 12.

http://support.apple.com/kb/TS2570 Follow this article and when it gets to the part where you go into disk utility using your install disc, you'll actually boot up holding down Command and R

IMac won't boot after iTunes Match - Get diskos2 i/o error. Help!

So after almost 24 straigth hours up uploading songs to iTunes Match, I woke up this morning and my iMac wouldn't boot. Gets stuck on the gray screen with the apple logo. I booted in verbose mode keep getting a "diskos2 i/o error." With a little googling some people say it's a bad sector and to erase and reinstall Lion others say it's a failing hard drive. Disk Utlity in Recovery Mode says the drive is ok. Any thoughts out there on what I should do? Thanks!

I am having the same problem. The machine loads just to the point when it says "Loading Mac OSX", then its non responsive for hours. The keyboard and mouse still work, but it won't move past that point.
When I try to repair the disk, it gives me an error message indicating that the disk cannot be repaired. I am bad at backing up my files, so I want to avoid a fresh reinstallation.
The worst part is I had just purchased Disk Warrior, and that won't boot up.
If no solutions are found, does anyone know a way that to initiate the computer in disk mode, so I can hook up another Mac to it, and save all the files?
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My iMac won't boot. I only get a white screen. Won't open in safe mode or recovery mode. Any suggestions?

Hey, any help? My 24" iMac won't boot. I only get a white screen when turning on. It won't open in safe or recovery mode. Any suggestions?

If you can't boot from your installer DVD, then take it in for service.

HT1199 My mac won't boot up it goes to a apple sign then the spin thing then gives me a error msg on a 10.5.8 imac what do I do?

Plz help
My mac won't boot up it goes to a apple sign then the spin thing then gives me a error msg on a 10.5.8 imac what do I do?

Hi LIsa,
Could be many things, we should start with this...
"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
Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)
If perchance you can't find your install Disc, at least try it from the Safe Boot part onward.
Or..
Tough without the Install Disk problems, but try fsck...
To use fsck, you must run it from the command line. Unlike using your mouse to open an application to do something, you'll need to type a text command at the prompt (#) to tell fsck what to do. The Terminal application (/Applications/Utilities) and single-user mode are two examples of command-line interfaces in which you can type such commands. To use fsck:
1. Start up your computer in single-user mode to reach the command line. Hold CMD+s keys down at bootup.
Note: If necessary, perform a forced restart as described in the Emergency Troubleshooting Handbook that came with your computer. On desktop computers, you can do this by pressing the reset/interrupt button (if there is one) or holding down the power button for several seconds. On portable computers, simultaneously press the Command-Control-power keys. If your portable computer doesn't restart with this method, you may need to reset the Power Manager.
2. At the command-line prompt, type /sbin/fsck -fy
(SPACE between fsck AND -fy important)
3. Press Return. fsck will go through five "phases" and then return information about your disk's use and fragmentation. Once it finishes, it'll display this message if no issue is found:
The volume (name_of_volume) appears to be OK
If fsck found issues and has altered, repaired, or fixed anything, it will display this message:
***** FILE SYSTEM WAS MODIFIED *****
Important: If this message appears, repeat the fsck command you typed in step 2 until fsck tells you that your volume appears to be OK (first-pass repairs may uncover additional issues, so this is a normal thing to do).
4. When fsck reports that your volume is OK, type reboot at the prompt and then press Return.

27" iMac won't boot from anything BUT the main drive

Hi all,
My lovely 27" iMac is in perfect working condition, but I thought I'd try to install a OS on a large SD card to see if I would gain any speed.
In the process of doing that (cause I never got that far) I discover that the iMac won't boot from the original install DVD. It simply spits out the DVD when I try to insert into the drive. I'v managed to make an image of the DVD (in a different mac) onto the SD card in order to try an boot from that. No luck. I've tried to insert a original install DVD from my Mac Pro into the iMac, which it reads fine and well, and when I tap the restart button it restarts, but stop with a white screen doing boot up.
If I try to hold down the option key during startup, the iMac WILL let me choose which OS to boot from, but if I choose anything else than the OS already installed it freezes.
I've even tried to boot my Mac Pro from the iMac install DVD - no problems.
I've even run a hardware test on the iMac - no problems.
I am running out of options fast! Please help a devoted Mac-friend.
Take care.
Peter

I WAS using the DVD that came with the machine, but I fear Apple may have sent me the wrong one?
In trying to solve the issues I'd tried other OS disc's (A Mac Pro install DVD and a OS X Leopard DVD) - but none of them would even boot, nor install of my iMac. I always end up with a white screen during boot up.
As I described, the original iMac install DVD would indeed boot my Mac Pro, do the disc seems ok?

My iMac won't boot up fully. It stays stuck in the gray screen with the pinwheel spinning, then after about 5 minutes just shuts itself off.

My iMac won't boot up fully. It stays stuck in the gray screen with the pinwheel spinning, then after about 5 minutes just shuts itself off.

Try SMC Reset (unplug it from the back of the computer for 10 seconds then plug it back. in)
Try PRAM Reset Cmd + OPtion + P + R on start up.
Try safe boot - hold down shift on start up.
Try booting to install dvd (C on start up) or recovery hd (CMD + R) and using disk utility to run a verify and repair. If you still can't boot after that reinstall the operating system. If you can't find the disc or it wont boot to the disc.
Try single mode which is cmd+S on start up. It will open with a terminal looking window in the terminal. type in /sbin/fsck -TL. If it returns *system has been modified* continue to type that command in until it comes back with macintosh hd seems to be ok. If after 5 tries it still gives you system has been modified. You may have to replace the hard drive.

HT3964 my iMac won't boot up. I hear the chime and the Apple symbol appears but there is no whirling indicator that appears and after a while the computer screen goes black and the whole cycle starts again. There have been occasions when it has actually s

my iMac won't boot up. I hear the chime and the Apple symbol appears but there is no whirling indicator that appears and after a while the computer screen goes black and the whole cycle starts again. There have been occasions when it has actually started and I have the dashboard appear but then the screen freezes

Since you have Lion v10.7.4 installed, use Lion Recovery to repair the startup disk if necessary, or reinstall the Mac OS X.

My iMac won't boot. I get the tone, the apple icon and the turning gear. I Unplugged, waited 1 min., restarted

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