afrombankstown

Q: 2011 imac 27" not passing apple logo start up

Hey guys,

I got a problem with my iMac 2011 27" I cannot get past the apple logo on start up. And progress bar only goes to 30% then iMac restarts itself.

 

I took a pic of the entries from verbose mode, does anyone know what the problem might be?

Imac_Verbose.jpg

Posted on Aug 15, 2015 5:18 PM

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Q: 2011 imac 27" not passing apple logo start up

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  • by Kappy,

    Kappy Kappy Aug 15, 2015 5:23 PM in response to afrombankstown
    Level 10 (271,328 points)
    Desktops
    Aug 15, 2015 5:23 PM in response to afrombankstown

    But you did not tell us what OS X version your have installed. So, if it is Lion or later:

     

    Reinstalling OS X Without Erasing the 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.

     

    Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.

     

    When the recovery menu appears select Disk Utility and press the Continue button. After Disk Utility loads select the indented Macintosh HD entry from the the left side list.  Click on the First Aid tab, then click on the Repair Disk button. If Disk Utility reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit Disk Utility and return to the main menu.

     

    Reinstall OS X: Select Reinstall OS X and click on the Continue button.

     

    Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless and more reliable.

     

    If it is Snow Leopard or earlier:

     

    Reinstall OS X without erasing the drive

     

    1. Repair the Hard Drive and Permissions

     

    Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. 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 click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.

     

    If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.

     

    2. Reinstall Snow Leopard

     

    If the drive is OK then quit DU and return to the installer.  Proceed with reinstalling OS X.  Note that the Snow Leopard installer will not erase your drive or disturb your files.  After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.

     

    Download and install Mac OS X 10.6.8 Update Combo v1.1.

  • by afrombankstown,

    afrombankstown afrombankstown Aug 15, 2015 5:25 PM in response to Kappy
    Level 1 (0 points)
    Aug 15, 2015 5:25 PM in response to Kappy

    sorry im running Yosemite latest update

  • by Kappy,

    Kappy Kappy Aug 15, 2015 5:28 PM in response to afrombankstown
    Level 10 (271,328 points)
    Desktops
    Aug 15, 2015 5:28 PM in response to afrombankstown

    Reinstalling OS X Without Erasing the 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.

     

    Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.

     

    When the recovery menu appears select Disk Utility and press the Continue button. After Disk Utility loads select the indented Macintosh HD entry from the the left side list.  Click on the First Aid tab, then click on the Repair Disk button. If Disk Utility reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit Disk Utility and return to the main menu.

     

    Reinstall OS X: Select Reinstall OS X and click on the Continue button.

     

    Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless and more reliable.

     

    Alternatively, see:

     

    Reinstall OS X Without Erasing the Drive

     

    Choose the version you have installed now:

     

    OS X Yosemite- Reinstall OS X

    OS X Mavericks- Reinstall OS X

    OS X Mountain Lion- Reinstall OS X

    OS X Lion- Reinstall Mac OS X

     

         Note: You will need an active Internet connection. I suggest using Ethernet

                     if possible because it is three times faster than wireless.

  • by Linc Davis,

    Linc Davis Linc Davis Aug 15, 2015 5:41 PM in response to afrombankstown
    Level 10 (208,000 points)
    Applications
    Aug 15, 2015 5:41 PM in response to afrombankstown

    Please disconnect all USB devices except those needed to start up (if any) and test. If there's no change, see below.

     

    iMac (27-inch): AMD Radeon 6970M Video Card Replacement Program - Apple Support

  • by afrombankstown,

    afrombankstown afrombankstown Aug 15, 2015 7:30 PM in response to Kappy
    Level 1 (0 points)
    Aug 15, 2015 7:30 PM in response to Kappy

    I reinstalled a clean version of yosemite and thats when it happened.

    There are no USB devices connected to the imac