I have an iMac that won't boot up. Chimes, Gray screen w/ apple icon, spinning gear and progress bar at bottom, about 20 sec then shuts off.

I have an iMac that won't boot up. Chimes, Gray screen w/ apple icon, spinning gear and progress bar at bottom, about 20 sec then shuts off.
Please Help

The internal drive is malfunctioning. What backups do you have?

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I have an iMac that won't boot up. I've read all posts on this subject to no avail. When power is switched on, it chimes, Apple logo appears, spinning wheel, then loading bar starts to fill. It gets to about 25% then switches off! Help please!

iMac that won't boot up! When power is switched on it chimes, Apple logo appears, then loading bar, then spinning wheel. Bar seems to load up and gets to around 25%, then reverts to the start again, gets to about 20% on the bar and then switches itself off leaving a black screen. Tried all the remedies on internet with no avail so would welcome some advice other than binning what is a relatively new computer. Earliest appointment Apple could offer was Thursday 17th, really useful for a business user _ not impressed,

You've probably tried this, but will it Safe Boot? Restart holding down the Shift key until you see the grey progress bar. You'll need to input your admin password during bootup. If it will boot you can then try to eject the disk using the various suggestions here that you haven't tried already:
http://osxdaily.com/2009/08/28/eject-a-stuck-disk-from-your-mac-dvd-super-drive/
Or this (not tried this myself, but if things are desperate): http://www.youtube.com/watch?v=n7NYW9Dr448

IMac G4 won't boot, no chime, blank screen

When powering up my iMac G4, you can hear the fan, but no boot chime or screen display. After manually opening superdrive and inserting the diskwarrior (or any disc), you can hear the drive spin up, but nothing happens, the drive then spins down.
Have reset PMU, still nothing.
Any suggestions?

Hey Drake and Welcome to Apple Discussions,
First it would help to know the CPU speed of your eMac.
So you hear the fan and you reset the PMU ( by pushing the button in the user access port? ).
Here's the procedure from the USB 2.0 models' service manual:
"Screen is dark, fan is running and the hard drive is spinning. You may hear the startup
chime as well.
1. Reset parameter RAM. Press Command-Option-P-R during startup before “Welcome to Macintosh”
appears.
2. The system software could be damaged. Start up from the system CD that came with the computer.
3. Remove the user access panel on the bottom of the computer. With the unit powered on, check if a red
LED is visible in the access door. If the red LED is on, power is on. If you don’t see the LED glowing
red, follow the steps under the symptom “No Power”.
4. Disconnect the A/C power cord. Place the unit in the service stand and remove the user access plate.
Press the PMU reset button on the logic board. Refer to “Resetting the PMU on the Logic Board”
mentioned earlier in this chapter.
5. Check for external video. Connect an external monitor to the mini-VGA port."
Richard

MacBook Pro model A1150 that won't boot past the gray screen.

I have tried to boot in Safe and Single User modes with no luck. I just need this to boot one more time so I can get my class notes off of it. Any Suggestions? It has Snow Leopard on it but I no longer have the installation disc and I do not have a FireWire that will fit into it.

If you cannot get the MBP to boot, then it is a Firewire (assuming it will power up and can be put into Target Disk Mode) or an enclosure. Those are the only two choices you have.
Ciao.

I have an iMac that I bought back in 2008. Ive kept uptodate with my OS and have the new Maverick. I want to buy an Airport Time Capsule (2TB). Is this going to be compatible?

I have an iMac that I bought back in 2008. Ive kept uptodate with my OS and have the new Maverick. I want to buy an Airport Time Capsule (2TB). Is this going to be compatible?

Yes, absolutely.

MacBook pro will not boot. I get the gray screen, an apple icon and spinning wheel. Tried to start in safe mode but get the same screen. The only thing different was that I loaded the zedge sync app yesterday. Now getting this problem.

Macbook pro will not boot. I get the gray screen, an apple icon and spinning wheel. I tried to start in safe mode, but get this same screen. The only thing different is that I added the zedge update app to do a sync for adding ringtones to my apple cell phone. How can I get a good boot. I am fairly new to apple computer.

Reset PRAM: http://support.apple.com/kb/PH4405 and then try a normal boot.
Run the Startup Manager to select Startup disk: http://support.apple.com/kb/HT1310
If those did not work your disk may be sick or dying. The top priority at this point is to make a backup copy of your data.
Check the health of the disk. Boot in Recovery Mode (Boot, Command-R). Run Disk Utility. Click on the upper left disk icon. Does the S.M.A.R.T. status say “Verified”? If not the disk/SSD is unhealthy and needs to be replaced. Even if it does not show “Verified” you can still attempt a backup.
Click on the icon indented below, usually called “Macintosh HD” and Verify Disk. If it finishes with a green “OK” message then all is well with the disk. If it shows errors in red then you have found a problem to address once the system is backed up. Do not attempt software repairs until you have secured the data.
If the disk will not show up at all in Disk Utility as your ran the tests above then it may be dead or it may have a bad internal SATA cable. A trip to an Apple store for confirmation would be in order.
If you have an external disk drive you can use as a backup drive then do so. If not Google “Hitachi USB 3.0 external hard drive 1TB” to purchase one or go to a brick-and-mortar store (including an Apple store) to pickup one. Any 1 TB external drive will do.
Assuming it is still breathing you can try to recover the data without booting from the sick disk.
Reformat the external disk. (This will erase all data on the external disk.)
Boot in Recovery Mode. Start Disk Utility. Plug in the new disk. Select it’s disk Icon (the second one down, left justified). Select the Partition tab.
Partition Layout > Single Partition
Name: Emergency Recovery 1 (or whatever name you wish to use)
Format: Mac OS Extended (journaled)
Options… > GUID Partition Table > OK
Apply
Select the Restore tab.
Drag the old system volume (Macintosh HD) to Source.
Drag the new disk volume (Emergency Recovery 1) to Destination.
Click on Restore.
It may take a long time for the backup.
If that will not complete post back for other emergency data recovery methods, including those from a brody.
If the backup succeeds, use the First Aid tab in Disk Utility to select the old volume (Macintosh HD) and Repair Disk. If it does not finish with a green OK message try to repair it once or twice more. If it repairs with a green OK message, will it boot normally? If not, boot from the Recovery Partition and reinstall OS X.
If it is still not healthy, post back for further instructions.

Why do I have a black screen with the icon spinning round and won't open?

why do I have a black screen with the icon spinning round and won't open my photos?

Because there is a problem. Want to try fix it?
Option 1
Back Up and try rebuild the library: hold down the command and option (or alt) keys while launching iPhoto. Use the resulting dialogue to rebuild. Choose to Rebuild iPhoto Library Database from automatic backup.
If that fails:
Option 2
Download iPhoto Library Manager and use its rebuild function. This will create a new library based on data in the albumdata.xml file. Not everything will be brought over - no slideshows, books or calendars, for instance - but it should get all your albums and keywords back.
Because this process creates an entirely new library and leaves your old one untouched, it is non-destructive, and if you're not happy with the results you can simply return to your old one. .
Regards
TD

Won't boot - no display, solid white light. Fans spin up and gets loud.

Hi Everyone,
I have a Core Duo 20" that won't boot. The display won't light up, and the white light stays on the whole time. No chime. Fans start slow, but then gradually gets very loud after over the course of a few seconds.
I've began taking it apart. One suspect area is the DC/DC Inverter board. The POWER_GOOD line is only showing 0.16V. Most power supplies uses signaling between 3V and 5V so I'm suspecious of this 0.16V POWER_GOOD signal.
Can someone help chime in (no pun intended), or verify the POWER_GOOD signal voltage of an early 2006 iMac Core Duo (2105)?
THANK YOU!
Yue

By the way, I've done AppleOption+PR (from my LCII days!), and have removed the logic board battery, waited, reinserted and retired without success. Thanks!

Imac intel won't restart, I get gray screen and spinning wheel then shut off

My imac intel only restart after running disk utility, otherwise I get a gray screen with apple logo and spinning wheel then after about 2min it shuts off. this all started after a power outage. I have tried everything that I have read online to fix this, it seems doing a clean install is last resort. Does anyone have any other options for me?

nessman wrote:
I have tried disconnecting the periperals, restarting in "safe boot", resetting the pram and I tried starting up in single user mode. It will only start up if I start up from the original gray 10.4 start up disk and run "repair disk"....I get errors including "The underlying task reported failure on exit". I then eject the disk and restart and it works fine but if I have to shut down or restart for any reason it's back to the gray screen.
Your system profile confirms you are using OS 10.5.8. Boot up from your OS 10.5.x install dvd. Use the "repair disk" setting. If you get the same error, then run Apple Hardware Test from your original system dvd.

Imac won't start white screen apple icon spinning gear

imac won't start. when turn on, I just get a white screen with apple icon and a spinning gear below the apple icon. what should I do to get it started and fix the problem? Thanks.

See if any of the suggestions in this link help:
http://support.apple.com/kb/TS2570

Macbook Air froze/turned it off to restart. Now it won't restart it goes to Gray screen with apple like it is loading, but when gets to the end it turns off. Try repairing it states incorrect number of thread records.Volume Macintosh HD found corrupt

Macbook Air froze/turned it off to restart. Will not restart just goes to gray screen like it is reloading and then shuts off. Have tried everything. When trying to reapir it says incorrect number of thread records, should be 108456 instead of 108455. Invalid voume directory count/the volumbe macintosh HD was found corrupt and needs to be repaired. How do I repair it?

Hello cgstephen
You would need to contact Apple or an Apple Authorized Service provider by checking out the page below. It will have everything you need to know about setting your MacBook Air up to get it repaired.
Service Answer Center - Mac notebooks
http://support.apple.com/kb/index?page=servicefaq&geo=United_States&product=Macn otebooks
Regards,
-Norm G.

I have Axiotron Modbook that won't boot upon powering, stays black/blue glitch like screen;( any suggestions?

I own multiple tablets but my most recent one the Axiotron Modbook has been frozen on a glitches screen for the last couple days.
I have tried removing power source, fully charging.
Being where as there is no external keyboard and it is a stylus/pen oriented tablet I have no other ideas or solutions after combing the web and varies forums for days.
If anyone has any advice or suggestions I would be grateful. Avoiding a tech repair for who knows how much would joyfully avoided.
Than!

Thanx Dave and Kappy I have tried these suggestions first. Tech support has not gotten back to me and forum discuss is as confused as I am;( because it is a Mac supported portable I'm exhausting all related avenues in hopes of a resolution. I have encountered a couple other Modbook owners with similar issue and although they were able to use external monitor (which defeats purpose of tablet) and or even get RAM, screen, etc. Repairs still the problem existed.
Only hope was a tidbit that maybe it was the lower Apple lower-half and not the Axiotrons upper functions.
Unfortunately this is one a few items not functioning properly right now so eventually soon with luck I will be able to afford repairs and pray they are successful;p
Thanx again fellas;)

I have a iMac that I store all my music on, I added apple TV to my living/dinning room area... I would like to stream music into my bedroom... how do I do this?

I have a iMac (in my office) that I store all my music on, I added apple TV to my living/dinning room area which I can control with my ipad 2 and iphone 4... I would like to stream music into my bedroom from my iTunes libaray which is on the iMac... does anyone have a suggestion on how to do this? Airplay?

home sharing
Setting up Home Sharing for Apple TV (2nd generation)
iOS: Setting up Home Sharing on your device

MacBook Pro won't boot up past gray screen?

Okay, so I was running chrome and iTunes and spotify. Spotify was playing and Avast! Detected an infection and moved it to the chest. I quit chrome and opened up a Steam game called Garry's Mod, but it wouldn't open no matter how many times I tried it. So I tried to open chrome again and it bounced but didn't open. Tried to open system preferences and it opened but didn't show a window and wasn't responding. So I tried to restart but it wouldn't restart, so I force shut it down. Then it wouldn't go past the gray screen.
So I restarted the PRAM. Didn't work. Tried booting into safe mode. Didn't work. When into single user and checked the directories I think. Didn't work. Called apple and repaired permissions and that didn't work. Then I downloaded OS Mavericks and reinstalled it. Didn't work. So I'm redownloading to see if it might work if i do it again. Otherwise, he said I'd have to completely restore and lose my data, which would suck. I don't have a backup unfortunately.
What I'm wondering is if there's anything you think I could do that just might fix this?
Or, is there anyway to save my data if it won't boot up and I don't have a backup? I have lots of writing and music I really would not like to lose.

Your disk may be sick or dying. As you surmised the top priority at this point is to make a copy of your data.
First, check the health of the disk. Boot in Recovery Mode (Boot, Command-R). Run Disk Utility. Click on the upper left disk icon. Does the S.M.A.R.T. status say “Verified”? If not the disk/SSD is unhealthy and needs to be replaced. Click on the icon indented below, usually called “Macintosh HD” and Verify Disk. If it finishes with a green “OK” message then all is well with the disk. If it shows errors in red then you have found a problem to address once the system is backed up. Do not attempt software repairs until you have secured the data. Post back with the results of this test.
If the disk will not show up at all in Disk Utility to run these simple testes then it is probably already dead. A trip to an Apple store to confirm that would be in order.
If you have an external disk drive you can use as a backup drive then do so. If not I’m going to council you to purchase a drive you can use to replace your internal drive if need be. The silver lining is this new drive will be much faster than the old one. Google “Seagate 1 TB SSHD”. You should find a drive for about $100. Google “USB 3.0 enclosure”. That should cost $10 to $20. When they arrive plug the drive into the enclosure.
Assuming it is still breathing you can recover the data without booting from the sick disk.
Reformat the external disk Boot in Recovery Mode. Start Disk Utility. Plug in the new disk. Select it’s disk Icon (the second one down, left justified). Select the Partition tab.
Partition Layout > Single Partition
Name: Emergency Recovery 1 (or whatever name you wish to use)
Format: Mac OS Extended (journaled)
Options… > GUID Partition Table > OK
Apply
Select the Restore tab.
Drag the old system volume (Macintosh HD) to Source.
Drag the new disk volume (Emergency Recovery 1) to Destination.
Click on Restore.
If that will not complete post back for another emergency data recovery method.
If the backup succeeds use the First Aid tab in Disk Utility to select the old volume (Macintosh HD) and Repair Disk. If it repairs with a green OK message, will it boot normally?
Post back for further instructions. How to proceed will depend on what has transpired to that point.

IBook won't boot, stops at gray screen--HELP

I couldn't find this exact topic at first glance and I am hoping someone can help me. My ibook is about 5 years old and has only really crashed on my once 2 years ago but I was able to reinstall the OS and go on my way. This time, however, nothing works. I tried to boot up yesterday and the gray screen appeared and that was it along with a strange buzzing sound. I tried Disk Warrior, wouldn't even boot off that. Also tried booting off system disk 1 and didn't get past the language screen, just hung up with that buzz again.
Does this sound like a logic board issue? Can it be rescued?
Thanks in advance for any help!

I'm not sure if the computer can be checked out at home in such a way
in its present state, to see if there is a logic board failure behind it, now,
or not. There could be a hard disk drive failure, or ATA controller failure;
and a short list of other possibilities, best checked over by a specialist.
Certain keyboard commands and things could be tried (and I usually
assume they'd been tried before asking here, but that's often not so)
just to see if one or more of them could get a rise out of the dead Mac.
Be sure, if you can get the installer disc to boot the Mac, that you
try and use the Disk Utility to repair disc; maybe more than once;
and do not try to just reinstall an Archive and Install. The HDD may
have corruption issues and it may need low-level zero-data and re-
formatting before a new system could go on there, if it worked at all.
{Even trying to reset PRAM/NVRAM and then seeing if you can get
the bootable OSX installer disc to start up the Mac could be OK.
Maybe that PMU reset, as a last resort? It probably won't hurt...}
A system on an external bootable enclosed hard disk drive could be
used by a tech or a prepared home-tech owner, and a clone of the
machine's system then attempted to be used to boot the ailing Mac.
If the optical drive and other components relying on the logic board
are dysfunctional due to a defect on that main board, most external
devices may also have a hard time trying to use these methods of
outside efforts to troubleshoot be nominally successful.
There may be a way a tech can use an second computer to get
data off the drive in your iBook, should it come to that, by using
the FireWire Target Disk mode and see if your iBook can start
and act like an external hard disk drive. A copy of the drive's
content or parts of it may be made by the second healthy Mac.
A clone (perhaps not bootable if data on it is damaged and not
recoverable) could be made if the second healthy computer has
a clone utility and also an external drive it can copy/clone the
iBook's drive content over to. This may be asking too much;
but the home user who has stuff on hand could do it shortly.
Anyway, there are some ideas online, if you can search google
and choose appropriate words; I looked but you may need to
read through several different source links to see if anything
sounds like it may work. re: iBook won't start past grey screen
Some users have tried resetting the PMU, others tried NVRAM
and PRAM; a few tried SafeBoot to see if the system was OK
enough to load in a reduced startup mode; maybe where the
system's own Disk Utility could be ran to at least fix permissions.
And of these, if it is truly a logic board or a failed hard disk drive,
they won't really do much. Probably no harm; and that is part
of what troubleshooting is all about, working with zeros and ones!
Good luck & happy computing!
edited to add a chapter.

I have an iMac that won't boot up. Chimes, Gray screen w/ apple icon, spinning gear and progress bar at bottom, about 20 sec then shuts off.

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