3 Replies Latest reply: Nov 4, 2012 6:05 AM by macjack
naesakijun Level 1 (0 points)

My notebook is macbook pro retina 15`,operate system is Os X MountainLion.When preview and change the screen saver,or input the user code on the screen saver interface,the OS always get stuck,I can't go back to the desktop,and the mac is dead. I have to power off my Macbook.It has been about 8 times since 2 months ago.I hope Technical staff can help me with this problem.

MacBook Pro (Retina, Mid 2012), OS X Mountain Lion (10.8.2)
  • macjack Level 9 (51,639 points)

    First of all you're not talking to Apple tech support here. Just other users like yourself, who freely donate their time to help.


    Quit System Preferences

    Go to your Finder "Go" menu hold the option key to choose "Library" and delete these files/folders:


    /Preferences/com.apple.system preferences .plist



    /Preferences/By Host/com.apple.systempreferences.xxx.plist of them)


  • naesakijun Level 1 (0 points)

    I do as what you said upon,but the notebook still get stuck on the screen saver interface,I don`t know what to do about it

  • macjack Level 9 (51,639 points)

    Try starting in Safe Mode and see if the problem still occurs?

    Restart holding the "shift" key.

    (Expect it to take longer to start this way because it runs a directory check first.)


    If this works look in System Preferences > Users & Groups > Login items and delete any third party login items (-), you can always add them back with the (+). Also look in /Library/Startup Items. Nothing is put in that folder by default, so anything in there is yours.