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tried to update os x maverick, i have macbook pro with mountain lion 10.8.5, update became stuck when almost completed shut down x2 now won't boot, gray apple screen with status bar, status bar fills then computer shuts down, what do i need to do?

1867 Views 2 Replies Latest reply: Nov 1, 2013 2:12 PM by Drew Reece RSS
susanefromga Calculating status...
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Oct 30, 2013 12:17 PM

i tried to update os x maverick, i have macbook pro, with mountain lion 10.8.5 when it was upgrading, it hung up when it was almost completed, i shut it down, it booted back up, hung up again, i shut it down again and when it tried to boot up the gray apple screen with the status bar came up the status bar will complete then the computer will shut off?  What do I need to do?

MacBook Pro, OS X Mountain Lion (10.8.5)
  • sterling r Community Specialists Community Specialists (3,240 points)

    Howdy Susane,


    It sounds like you are unable to boot your computer to the desktop, and it gets stuck on blank screen after the gray screen with the progress bar goes away.

    I want to recommend the troubleshooting steps from this article named:

    Mac OS X: Gray screen appears during startup

    Disconnect, test peripheral devices and network cables

    Note: "Peripheral devices" refers to external devices other than what came with your Mac, such as hard drives, printers, or hubs that you connect via a USB or FireWire cable.

    1. Shut down your Mac. If necessary, hold your Mac's power button for several seconds to force it to power down.
    2. Disconnect all peripheral devices such as external hard drives or printers (leave only the display, a keyboard, and mouse connected).
    3. Disconnect any Ethernet cables.
    4. Start up your Mac.
    • If you can start up this way, one or more of your peripheral devices (or installed software related to the device) is probably causing the gray screen issue. Connect one device, then restart your Mac to test for the issue. Repeat the process until you locate the device at issue. Make sure the device is powered if it needs to be to operate correctly. Check with the manufacturer of the device for support or possible software driver or firmware updates that may be available for the device. Try a different cable with the device if possible (such as a different USB or FireWire cable).

      Note: If you have multiple peripheral devices and the issue only occurs when they are all connected, but not when each device is the only peripheral connected, see the Additional Information section below.
    • If you are using a desktop Mac with a third-party keyboard and/or mouse device, and the issue still occurs, try starting up with an Apple keyboard and mouse connected instead. Try starting with no keyboard and mouse connected, then connect them after start up. Also, try a different USB port on your Mac.
    If the gray screen issue persists with no devices connected, go to the next section (with the peripherals still disconnected).Perform a Safe BootSimply performing a Safe Boot may resolve this issue.
    1. Shut down your Mac. If necessary, hold your Mac's power button for several seconds to force it to power down.
    2. Start your Mac, then immediately hold the Shift key. This performs a Safe Boot. Advanced tip: If you want to see the status of a Safe Boot as it progresses, you can hold Shift-Command-V during start up (instead of just Shift).

      : A Safe Boot takes longer than a typical start up because it includes a disk check and other operations.
    3. If your Mac starts up as expected, immediately try restarting.
    If the Safe Boot does not work, or the restart after a successful Safe Boot does not work, go to the next section.
    Reset the NVRAM / PRAM
    1. Shut down your Mac. If necessary, hold your Mac's power button for several seconds to force it to power down.
    2. Reset the NVRAM / PRAM.


    If the issue persists after that, I would next boot to the recovery partition and use the Disk Utility to verify and repair the disk if necessary.

    Disk Utility 12.x: Repair a disk


    Thank you for using Apple Support Communities.

    All the very best,


  • Drew Reece Level 4 Level 4 (1,195 points)

    I think you may find more people with the same issue in this thread…


    Personally I had to use Disk Warrior to repair the disk. Apple's tools didn't touch the damage.

    Try sterling's advice first.


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