When I turn my iMac on, it appears to start up but then shuts down

Why does my iMac keep shutting down? I turn it on, the grey screen and apple logo appear, but then it shuts down...

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Similar Messages

  • IMac Starts Up And Then Shuts Down ...

    Hi ...
    I'm hoping that someone out there can help me ...
    I purchased an Apple 24" iMac about 3 years ago ...
    It was pretty much working perfectly until 2 days ago ...
    The last time it was fully operational I'd just switched the computer on for the day - opened iTunes - and was using the FINDER to find approx 600 MP3s to add to iTunes ...
    Whilst the FINDER was searching for the MP3s the iMac froze ...
    So I decided to RESTART the computer by holding the POWER BUTTON to shut the computer down ...
    I gave the computer around 10 secs to shut down ...
    Then when I pressed the POWER BUTTON to START the iMac again it reached the grey screen with the Apple logo and the rotating dial ...
    The computer then started emitting an audible clicking sound as if it was searching for / organising data ...
    The sound eventually stopped but the iMac froze on the grey screen ...
    So again I decided to RESTART the computer by holding the POWER BUTTON to shut the computer down ...
    I gave the computer around 10 secs to shut down ...
    Then when I pressed the POWER BUTTON to START the iMac again it reached the grey screen with the Apple logo and the rotating dial ...
    And froze again ...
    I followed the instructions contained within the EVERYTHING MAC booklet ...
    I tried holding the OPTION key whilst starting up ...
    I tried holding down the COMMAND OPTION P and R keys to reset the PARAMETER RAM ...
    I also tried holding down the D key whilst starting up to test the Apple Hardware ...
    My iMac passed the Apple Hardware Test ...
    However every time I now try to start the iMac it reaches the grey screen (Apple logo / rotating dial) and then shuts down after approx 1 minute ...
    Is this simply a boot problem ? ...
    What alternatives do I have to boot up / correct the problem ? ...
    I'd be ever so grateful if someone out there could help walk me through alternative actions to take ...
    Kind regards ...

    Hello
    Try target disk mode see if your mac shut down from this way , to do that
    hold hon at start up "T" on key board just after startup sound until screen show a firewire logo as screen saver
    and wait ..
    if by chance you have a second mac you can use a fire wire cable to link it , in that way your mac is like an external hard drive , most easy way to recover data from it
    Try start in single user mode ,  use COMANDE - S at start up
    Try start in safe mode , use SHIFT key at start up
    if in all case you mac shut down after 1 or 2 min of use , certenly mean a mother board and or powersupply problem
    be sure to have perform SMC and PRAM reset at least 3 times each
    HTH
    Pierre

  • When I open my newsstand, it only stay open for a second then shuts down.  It started after I updated my software to 6.0. Any suggestions for how to fix this?

    When I open newsstand it only stays open for 1 second then shuts down.  This started happening after I upgraded to 6.0. Any suggestions for how to fix this?

    Try quitting Newsstand completely - double tap home button, delete it from the multitasking shelf - then launch it again.

  • When i turn my macbook on, only two apps start up, but my desktop is just a blank gray screen.

    When i turn my macbook on, utorrent starts as well as facebook messenger, but if i close both, my screen only shows gray and no icons. I cant do anything with it.
    I tried PRAM reset, but that doesnt fix it.

    Go to your user library folder visible in your user/home folder.  Select Library/Preferences/com.apple.desktop.plist and com.apple.finder.plist. Move the .plists to your desktop.
    Re-launch Finder by restarting and test. If it works okay, delete the plists from the desktop.
    If the same, return the .plists to where you got it  from, overwriting the newer ones.

  • My imac 5.1 freezes or coloured spinning wheel then shuts down.

    Hi
    My imac 5.i freezes or has a spinning coloured wheel and locks up, or the screen goes white or shuts down on it's own .
    Any help !

    Hello:
    Try resetting the PRAM and SMC.
    If it continues, take it in for service.
    Barry

  • When I launch PhotoBooth, it gives me the hourglass for awhile and then shuts down. Any ideas?

    When I launch PhotoBooth, it gives me the hourglass and then shuts off. I think my kids have posted too many videos on it. It doesn't let me do anything prior to shutting down. Any ideas?

    Download Photoshop Elements products | 13, 12, 11, 10

  • IMac (G1 Intel) won't start after having been shut down (for extended time)

    I haven't been using 1st generation Intel iMac for about a year and after reconnecting it now it simply won't start. I have tried resetting SMC, no help. Also tried another outlet. The fans are not spinning up, nothing on the screen, no startup chime. It worked perfectly before I shut it down last tiime.
    Any ideas what might be wrong, what to troubleshoot/fix?

    Have you ever changed the PRAM battery - they run flat after a few years? Not sure if it would prevent booting if it were flat, but possibly.
    Try leaving the Mac plugged in to a power socket for a few hours (if you haven't already) and then try again. If it does boot (bit of a long shot) get a new PRAM battery.

  • When I start my MacBook I get a gray screen, I've tried safe start and it sounds like it's going to start and then shuts down. Any suggestions?

    When I start my macbook I get the gray screen and gear. I've tried to safe start it and it sounds like it's going to start but then shuts down. I don't have any other products connected to it. Any suggestions?

    Did you recently install any updates?
    Do you have your original install discs?
    ~Lyssa

  • If I have my iMac internet sharing turned on, the Airport Utility won't recognize the Airport Express I want to use to stream iTunes to my stereo.  When I turn the iMac internet sharing off, the Airport Express appears but calls itself a base station.

    If I have my iMac internet sharing turned on, the Airport Utility won't recognize the Airport Express I want to use to stream iTunes to my stereo.  When I turn the iMac internet sharing off, the Airport Express appears but calls itself a base station.  I just bought the Airport Express and it's not clear how I should set up my System Preferences for Sharing.  Thx

    Yes. Unfortunately the stereo is too far from the wired ethernet connection   My iMac is connected to the internet using an ethernet cable from the DSL modem (plugged into the wall, not wireless).  The Airport Express is plugged into an outlet 25' away from the iMac and connected to my speakers.  I've turned on the iMac Airport wireless Internet Sharing, hoping to stream iTunes to the Express connected to the stereo.  The iMac Airport picks up several neighborhood networks so I know it's working (and I connected my iPhone wifi to it just to check as well).
    When I use Airport Utility to set up the Express, the only time Utility recognizes the Express is when the iMac Airport is off.  When I turn on the iMac Airport, the Airport Utility immediately loses the Express and asks to rescan.
    Maybe that explains my problem better.

  • When i turn my imac on it displays a circle with a line thru it why

    When I turn my imac on it displays a circle with a line going threw it and says its loading but nothing appears on the screen. What should I do?

    If your data isn't backed up, get one of these tools to see if it can recover data from your drive to an external hard drive at least as large as your internal:
    https://discussions.apple.com/docs/DOC-1689
    If your data is backed up, and you are running 10.7 or later, boot with command-R.
    If your data is backed up, and you are running 10.6.8 or earlier, find the disk that either shipped with the Mac if it is matching
    the system you are running, but just an earlier version, (i.e. 10.6.8 users can use the 10.6.x bundled installer from the same Mac),
    or the retail installer that installed the operating system on the Mac.
    And select the Utilities menu after selecting the language, and select Disk Utility.
    From there select First Aid.
    And then see if the hard drive is selectable.
    If it is, Repair Disk.  If it isn't, or Repair Disk is not able to repair it, go to the store and purchase Alsoft Disk Warrior.  It may be able to make your machine bootable again.
    If it can't, you may have to replace the hard drive.

  • When using my iMac the screen turned blue and so I turned the compute off. When I turn on again power does get to the computer but there are no chimes and the screen remains black. Any advise please. David

    When using my iMac the screen turned blue and so I turned the compute off. When I turn on again power does get to the computer but there are no chimes and the screen remains black. Any advise please. David

    Hello DJJOC,
    Thanks for using Apple Support Communities.
    To start troubleshooting this issue where your iMac's screen will not illuminate, please reset your SMC by following the information outlined below.
    Resetting the SMC for Mac Pro, Intel-based iMac, Intel-based Mac mini, or Intel-based Xserve
    Shut down the computer.
    Unplug the computer's power cord.
    Wait fifteen seconds.
    Attach the computer's power cord.
    Wait five seconds, then press the power button to turn on the computer.
    Note: For Intel-based Xserve computers that are not responding, you can shut down locally, or by using remote commands, or by pressing and holding the power button for five seconds.
    Intel-based Macs: Resetting the System Management Controller (SMC) - Apple Support
    Take care,
    Alex H.

  • When you turn on the ipad2 it does not start up properly.  The rotating disk that happens when you turn off the ipad appears after the apple logo comes up

    When you turn on the ipad2 it does not start up properly.  The rotating disk that happens when you turn off the ipad appears after the apple logo comes up during start-up and stays there for ten minutes.  Then, the ipad will start up properly.

    Have you tried a reset ? Press and hold both the sleep and home buttons for about 10 to 15 seconds (ignore the red slider), after which the Apple logo should appear - you won't lose any content, it's the iPad equivalent of a reboot.

  • When I turn it on the apple appears but nothing else happens??

    I have Ipod touch when I turn it on the apple appears but nothing else goes on help??

    What happens if you try a hard reset?  To do this, press and hold both the Sleep/Wake and Home buttons together long enough for the Apple logo to appear.
    If its still stuck at the Apple logo, try connecting it to your iTunes library in recovery mode and restoring it.
    http://support.apple.com/kb/ht1808
    B-rock

  • My iMac starts up and then shuts itself down during the boot up process. it shuys down half way through the Apple logo appearing. any ideas how to fix?

    My iMac starts up and then shuts itself down during the boot up process. it shuys down half way through the Apple logo appearing. any ideas how to fix?

    Hi daveormond,
    I'm sorry to hear you are having these issues with your iMac. If you continue to have issues with your Mac shutting down part way through the boot up process, you may find the troubleshooting steps outlined in the following articles helpful (given your description, it sounds like it could be either issue, or a combination of both):
    Mac OS X: Gray screen appears during startup - Apple Support
    OS X: When your computer spontaneously restarts or displays "Your computer restarted because of a problem." - Apple Support
    Regards,
    - Brenden

  • I updated the IPAD with the latest update and now when I turned the IPAD on, I get the itunes logo and then nothing else.  How can I fix this to let me use my IPAD?

    I updated the IPAD with the latest update and now when I turned the IPAD on, I get the itunes logo and then nothing else.  How can I fix this to let me use my IPAD?

    YOU ARE IN RECOVERY MODE
    1. Turn off iPad
    2. Turn on computer and launch iTunes (make sure you have the latest version of iTune)
    3. Plug USB cable into computer's USB port
    4. Hold Home button down and plug the other end of cable into docking port.
    DO NOT RELEASE BUTTON until you see picture of iTunes and plug
    5. Release Home button.
    ON COMPUTER
    6. iTunes has detected iPad in recovery mode. You must restore this iPad before it can be used with iTunes.
    7. Select "Restore iPad"...
    Note:
    1. Data will be lost if you do not have backup
    2. You must follow step 1 to step 4 VERY CLOSELY.
    3. Repeat the process if necessary.

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