iMac won't shut down or logout users

Discussion in 'iMac' started by film916, Nov 12, 2010.

  1. macrumors newbie

    Joined:
    Nov 12, 2010
    #1
    I often have an issue where my iMac won't shut down, restart or logout users. Basically, when I click Shut Down or Restart, the desktop icons disappear as if the computer's getting ready to shut down (the desktop wallpaper remains) and it just sits there and won't shut down. I have to hold down the power button on the back of the computer in order to get the computer to shut off. This often happens when I try to logout a user. I'd say this happens about 2/3 to 3/4 of my attempts to shut down or logout a user. Any ideas?
     
  2. Moderator emeritus

    Hellhammer

    Joined:
    Dec 10, 2008
    Location:
    Finland
  3. macrumors 603

    richard.mac

    Joined:
    Feb 2, 2007
    Location:
    51.50024, -0.12662
    #3
    restart holding command+V and it will boot in verbose mode. then shutdown or logout and verbose mode will also show. what does it get stuck on?
     
  4. thread starter macrumors newbie

    Joined:
    Nov 12, 2010
    #4
    First, thanks for the replies, but you're kinda speaking a new language to me. How to I reset SMC and PRAM, and what should I run in Disk Utility?

    I don't think I've ever booted in verbose mode. What should I look for when I shutdown?
     
  5. macrumors 603

    richard.mac

    Joined:
    Feb 2, 2007
    Location:
    51.50024, -0.12662
    #5
    no need to reset the PRAM (actually NVRAM in Intel Macs) as it just holds the speaker volume, screen res and startup disk info. do try an SMC reset tho http://support.apple.com/kb/ht3964

    if it shows verbose info before restarting, might not as you said it stalls at the wallpaper (not at the blue screen), it will stall at a line and try and remember what stalled it or write down the whole line.
     
  6. Moderator emeritus

    Hellhammer

    Joined:
    Dec 10, 2008
    Location:
    Finland
    #6
    Repair permissions and verify the disk.
     
  7. thread starter macrumors newbie

    Joined:
    Nov 12, 2010
    #7
    Thanks, guys... I'll give this a shot and let you know what happens.
     

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