Computer shutting down

Discussion in 'Mac Pro' started by Camille, Jan 29, 2006.

  1. Camille macrumors regular

    Joined:
    Jun 15, 2005
    #1
    Hey.
    Look, my iMac G5 is set, in the preferences, to start the screen saver when it's inactive for 10 minutes, and to put the display and the computer to sleep 5 minutes after the screen saver starts.
    So, in the last 2 weeks, I noticed that after the screen saver is active for 5 minutes, instead of going to sleep like I set it, my mac just SHUTS DOWN!
    So my iMac shuts down at least 5 times a day!!!
    What's wrong??
    A beg you, please help me!:(
    Thank you very much if you took the time to read my thread and try to help me...:)
     
  2. CoMpX macrumors 65816

    CoMpX

    Joined:
    Jun 29, 2005
    Location:
    New Jersey
    #2
    That certainly is a strange problem. The first thing I would do is reset the PMU, PRAM, and NVRAM. If this doesn't work then you could try to verify/repair permissions in Disk Utility. If none of this works then I would call Apple.
     
  3. Camille thread starter macrumors regular

    Joined:
    Jun 15, 2005
    #3
    What does reseting PMU, PRAM, and NVRAM mean?
    Does it reset preferences?
     
  4. Applespider macrumors G4

    Applespider

    Joined:
    Jan 20, 2004
    Location:
    looking through rose-tinted spectacles...
    #4
    Camille, you should really keep your 'old' thread active or at least refer to it in your new thread.

    It will help anyone who can help diagnose since they can see what's already been suggested, tried and give more details of the problem

    The link that CoMpX gave tells you what to do and what basically it's doing. But no, it won't wipe your application preferences.
     
  5. Camille thread starter macrumors regular

    Joined:
    Jun 15, 2005
  6. mad jew Moderator emeritus

    mad jew

    Joined:
    Apr 3, 2004
    Location:
    Adelaide, Australia
    #6
    The linked article doesn't include how to reset the iMac SMU (which is the equivalent of the PMU on other Macs) but rather outlines how to reset the PRAM, the contents of which are listed at the bottom.


    Code:
    Status of AppleTalk
    Serial Port Configuration and Port definition
    Alarm clock setting
    Application font
    Serial printer location
    Autokey rate
    Autokey delay
    Speaker volume
    Attention (beep) sound
    Double-click time
    Caret blink time (insertion point rate)
    Mouse scaling (mouse speed)
    Startup disk
    Menu blink count
    Monitor depth
    32-bit addressing
    Virtual memory
    RAM disk
    Disk cache

    All of these will be reset to the defaults. :)
     
  7. MacFan782040 macrumors 6502a

    MacFan782040

    Joined:
    Dec 1, 2003
    Location:
    Scranton, PA
    #7
    You may have gotten the iMac G5 Power bug! LOTS of people have this problem, including me.

    The power supply in Rev A and B machines have something wrong with them (gets too hot or something) and shuts down.

    Look on Apple's own discussion page, they have many posts on it.

    I called Apple about it a week ago, they are actually having a technician sent here to replace it, then they want me to send the old power supply back to Apple and I'll be talking to them directly about it.

    So basically, they recognize there's a problem and need more info to issue a recall.
     
  8. Camille thread starter macrumors regular

    Joined:
    Jun 15, 2005
    #8
    Thank you!
    But, what do I exactly need to do?
     
  9. mad jew Moderator emeritus

    mad jew

    Joined:
    Apr 3, 2004
    Location:
    Adelaide, Australia
    #9
    Erm, are you allergic to hyperlinks? That sucks. :D


     
  10. Camille thread starter macrumors regular

    Joined:
    Jun 15, 2005

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