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IMAC FREEZES

764 Views 21 Replies Latest reply: Jan 19, 2013 12:16 PM by rileyreese RSS
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rileyreese Calculating status...
Currently Being Moderated
Jan 4, 2013 10:51 AM

I have a 2009 iMac that I got from my boyfriend. It worked great until I download Mountain Lion. Since then it keeps freezing on start up and now when it's been sleeping for an hour at lunch time today. I have called Apple Support several times and we try different things but it never works. It's getting frustrating. Any help or suggestions are appareciated!

iMac, iOS 6.0.2
  • BDAqua Level 10 Level 10 (114,685 points)
    Currently Being Moderated
    Jan 4, 2013 12:38 PM (in response to rileyreese)

    Hello,

     

    Bootup holding CMD+r, or the Option/alt key to boot from the Restore partition & use Disk Utility from there to Repair the Disk, then Repair Permissions.

     

    See if the Disk is issuing any S.M.A.R.T errors in Disk Utility...

     

    http://support.apple.com/kb/PH7029

     

     

    Open Activity Monitor in Applications>Utilities, select All Processes & sort on CPU%, any indications there?

     

    How much RAM & free space do you have also, click on the Memory & Disk Usage Tabs.

     

    Open Console in Utilities & see if there are any clues or repeating messages when this happens.

     

    In the Memory tab of Activity Monitor, are there a lot of Pageouts?

  • BDAqua Level 10 Level 10 (114,685 points)
    Currently Being Moderated
    Jan 4, 2013 11:58 PM (in response to rileyreese)

    One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for problem in Safe Mode...

     

    PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive

     

    Reboot, test again.

     

    If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport, or some USB or Firewire device, or 3rd party add-on, Check System Preferences>Accounts>Login Items window to see if it or something relevant is listed.

     

    Check the System Preferences>Other Row, for 3rd party Pref Panes.

     

    Also look in these if they exist, some are invisible...

     

    /private/var/run/StartupItems

    /Library/StartupItems

    /System/Library/StartupItems

    /System/Library/LaunchDaemons

    /Library/LaunchDaemons

  • BDAqua Level 10 Level 10 (114,685 points)
    Currently Being Moderated
    Jan 10, 2013 3:12 PM (in response to rileyreese)

    Open console in Applications>Utilities, check the system log for the date/time of the last problem  & the Startup right after that for clues.

  • BDAqua Level 10 Level 10 (114,685 points)
    Currently Being Moderated
    Jan 13, 2013 2:37 PM (in response to rileyreese)

    Hmmmm, in System Prefs>Sharing, disable Screen Sharing, in fact for now disable all sharing.

  • Linc Davis Level 10 Level 10 (107,470 points)
    Currently Being Moderated
    Jan 13, 2013 3:09 PM (in response to rileyreese)

    I have called Apple Support several times and we try different things but it never works.

     

    What things?

  • Linc Davis Level 10 Level 10 (107,470 points)
    Currently Being Moderated
    Jan 14, 2013 8:03 AM (in response to rileyreese)

    Holding the control shift key for kernal attacks, and then CMD + R for recovery mode.

     

    I think that's a reply to me, but I'm not sure because you replied to yourself. Please don't do that.

     

    What did you do in Recovery mode?

  • Linc Davis Level 10 Level 10 (107,470 points)
    Currently Being Moderated
    Jan 14, 2013 8:27 AM (in response to rileyreese)

    You say that everything was frozen when you booted in safe mode because you couldn't click. Did you manage to log in? Were you tapping to click or physically clicking the trackpad button? If you were tapping, try again with clicking.

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