1 Reply Latest reply: Feb 21, 2013 10:53 AM by BDAqua
robertfromclondalin Level 1 Level 1 (0 points)

It start to  load and then  shutdown 


Mac mini (Mid 2011), OS X Mountain Lion (10.8.2), Mac mini won't start up
  • BDAqua Level 10 Level 10 (119,040 points)

    Hello Robert,

     

    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.

     

    Reboot.

     

    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 (Users & Groups in later OSX versions)>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