My iMac won't boot. It stays loading with the Apple logo then it turns to a Do Not Enter logo
It only boots when it's on Safe Mode but when I restart to Normal Mode the problem continues
In addition to the article rkaufmann87 provided, try shutting down your iMac and unplugging absolutely everything from it, including its power cable. Let it sit for an hour or so, then re-attach the power cord and the keyboard & mouse and see if it will boot normally.
~Lyssa
Similar Messages
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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 SmithThere 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. -
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. -
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
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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.
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I have a macbook and when I power it on and then select myself as a user...It won't power up. It stays in the white screen with the apple logo. I am online currently under 'guest user'. Is there anything I can do from the keyboard to fix this??? Help!!!
Could you specify the model of MacBook and the OS X it's running, please? Some of the advice or references vary along with the system, so this could be helpful to formulate a reply. I've never used a Guest User selection, but do have more than one User.
If the computer does not have an optical drive, you may be able to boot it into a recovery disk mode or something; in an attempt to see what is wrong and maybe fix it.
Good luck & happy computing! -
I turned on my iMac today running Lion and typed in my password and it went to the gray screen with the apple logo and a little wheel spinning below it and won't go any further. Ive tried the Pram reset with cmd alt r p. no help. Ive tried a safe boot. No help. I've unpluged everything to it and unpluged the iMac itself. No help. One other thing I wanna try but I don't think I can is starting with the install cd. But oh wait, lion was a download only. So I don't have a disk. I have a snow leopard install disk. I put that in just so I can get to my disk utility. When I got there I saw that my HD drive was not mounted and it wont let me repair it. I'm thinking this has to do with using the snow leopard cd. Maybe it will show mounted if I tried a lion cd that I don't have. Any ideas????
Please read Apple's Gray screen appears during startup, you have performed some of the troubleshooting steps however I'd recommend starting over from the beginning of the advice letter and following the instructions to the letter.
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My macbook had a weird behavior on the display, now it won't go further than gray loading screen with the apple logo. It's a macbook pro early 2011. I've read that those are having issues, if there's someone i can contact for further information, report the issue since it's getting common or any temporal solution available. Thanks
Reinstall Lion, Mountain Lion, or Mavericks without erasing drive
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu. Select Restart from the Apple menu.
Reinstall Mountain Lion or Mavericks
OS X Mavericks- Reinstall OS X
OS X Mountain Lion- Reinstall OS X
Note: You will need an active Internet connection. I suggest using Ethernet
if possible because it is three times faster than wireless. -
On start up of my new iMac it locks on the grey screen with the apple logo and the progress wheel spins. Boot up in safe and this is where it stopped at "BootCacheControl: Unable to open /var/db/bootcache.playlist: 2 no such file or directory. "
Reinstalling MacOS does NOT fix the problem for me. I'm still searching a solution !
Bernard -
I turned off my iPod touch and when I tried to turn it back on, it won't load and just sits on the black screen with the Apple logo.... HELP!!!):
Try a Reset...
Press and hold the Sleep/Wake button and the Home button at the same time for at least ten seconds, until the Apple logo appears. Release the Buttons.
Restart / Reset
http://support.apple.com/kb/ht1430 -
iOS 7.02 update made my iPad stay frozen on the appl logo. What's more, a factory update in DFU mode won't work either, I get error code 3194 - any tips on what I should do? It is an iPad2 on iOS 5 something, the one just before Apple removed YouTube...
iOS 7.02 update made my iPad stay frozen on the appl logo. What's more, a factory update in DFU mode won't work either, I get error code 3194 - any tips on what I should do? It is an iPad2 on iOS 5 something, the one just before Apple removed YouTube...
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Hi,
I have a 2010 iMac.
I have had not one problem with my mac since getting it as a gift, yet since I updated to the newest update. 10.8.2 or something along this, my Mac began to work really slow, and all of a sudden it should down today.
I tried to turn it back on and it was stuck on the white screen with the apple logo, the spinning wheel and occasionally the loading bar underneath.
I have used many forums including this, to try and find a solution. I finally got on to the OSX Utilities page, however, i can't wipe my hard drive clean, can't uninstall my operating system.
It's basically stuck on this page.
I'm a complete novice with Macs really, its used mostly for University work and research.
thanks :/Contact Apple Service, iMac Service or Apple's Express Lane. Do note that if you have AppleCare's protection plan and you're within 50 miles (80 KM) of an Apple repair station, you're eligible for onsite repair since yours is a desktop machine. Might also apply to new machines the first 90 days. BTW, the AppleCare Protection Plan's the best insurance policy available for desktop machines. Get it if you don't have it before contacting Apple.
Fixing the locked disk w/Mountain Lion installed is something they should be able to rectify. -
When I turn it on, I type the password, then it starts to load, but nothing happens. It gets stuck on the grey screen with the apple logo. I can´t go to an Apple store since I´m working in Bolivia. Thanks
RhysWills1,
which model MacBook Pro do you have, and which version of OS X is installed on it? -
My MacBook Pro stated that it needed to be updated. I clicked yes to restart the computer and update but when it restarted it stays on the gray screen with the apple logo and then pops up, stating "unable to find driver for this platform." What do I do?
Boot into Recovery by holding down the key combination command-R at the startup chime. Release the keys when you see a gray screen with a spinning dial.
Note: You need an always-on Ethernet or Wi-Fi connection to the Internet to use Recovery. It won’t work with USB or PPPoE modems, or with networks that require any kind of authentication other than a WPA or WPA2 Personal password.
When the Mac OS X Utilities screen appears, follow the prompts to reinstall the Mac OS. You don't need to erase the boot volume, and you won't need your backup unless something goes wrong. If your Mac didn’t ship with Lion, you’ll need the Apple ID and password you used to upgrade, so make a note of those before you begin.
Don't install the Thunderbolt update -- it's defective. -
Hi, I am not able to reboot my Mac desktop.
When I switch on the Mac, I get a white screen with the Apple logo and the little rotating circle.
The system refuses to boot.
What can I do?
MarcusWe need to get you moved. This forum is for mini-tower Macs built between 1998 and 2005 and doesn;t get as much traffic ("eyeballs on the problem") as the forums for newer Macs.
Please do "About this Mac" from you Apple menu and tell us what that says for "processor" and Mac OS version. Looks like this:
or this for later Mac OS versions:
With that we can figure out which of the two iMac forums you need and get the Hosts to move your post.
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