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problems booting up and shutting down

335 Views 3 Replies Latest reply: Jul 18, 2013 2:35 PM by judysings RSS
Future Graphics Calculating status...
Currently Being Moderated
Jul 16, 2013 7:27 AM

Recently experiencing problems with starting up and shutting down. No chime on restart and slow shutdowns. Today I couldn't boot up at all.

No blue screen. Getting a gray apple logo and a kernal panic for a minute then black screen. Any ideas as to what is going on?

iMac (24-inch Mid 2007), Mac OS X (10.6.8)
  • judysings Community Specialists Community Specialists (2,320 points)
    Currently Being Moderated
    Jul 18, 2013 11:13 AM (in response to Future Graphics)

    Hi Future Graphics,

     

    Welcome to the Support Communities!

     

     

    The article below will help you with this issue.

    You can click on the link to see more details and screen shots.

    I've highlighted the pertinent information for you below:

     

    Mac OS X: Gray screen appears during startup

    http://support.apple.com/kb/ts2570

    Resolution

    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.
     

    If the gray screen issue persists with no devices connected, go to the next section (with the peripherals still disconnected).


    Perform a Safe Boot

     

    Simply performing the 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).

      Note
      : 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 gray screen issue persists, go to the next section.Start from your Mac OS X Install disc; use Disk Utility
    1. Insert your Mac OS X 10.4 or 10.5 installation disc (if you have discs with both versions, use whichever is closest to the Mac OS X version installed on your Mac; do not use a startup disc which came with a different Mac or which contains an earlier version of Mac OS X).
    2. Shut down your Mac. If necessary, hold your Mac's power button for several seconds to force it to power down.
    3. Start up your Mac while holding the C key to start from the disc.
    4. Once started from the disc, choose Disk Utility from the Utility menu.

      Note: If the gray screen issue persists and you can't start from the disc, go to the "Disconnect peripheral devices" section.
    5. In Disk Utility, perform a disk repair of your Mac OS X volume; if no issues are found, perform a permissions repair as well. If issues are found during the disk repair, try repairing again.
    6. After the Disk Utility operations are complete, restart without holding any keys.

    There are several more troubleshooting steps to take in the article, but these are the primary ones.

     

    I hope this information helps ....

    Have a great day!

     

     

    - Judy

  • judysings Community Specialists Community Specialists (2,320 points)
    Currently Being Moderated
    Jul 18, 2013 2:35 PM (in response to Future Graphics)

    Hi Future Graphics,

     

    I'm happy that you are back on track!

     

    Cheers,

     

    Judy

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