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iMac won't power up anymore

817 Views 8 Replies Latest reply: Jul 22, 2007 6:14 AM by den.thed RSS
Arnd Kaiser Level 1 Level 1 (5 points)
Currently Being Moderated
Jul 18, 2007 10:27 AM
Hi,

for a couple of days now, my iMac (Core 2 Duo, 8 months old) won't start up anymore when I press the power button. However, if I press and hold the power button for about 5 seconds, then press it again, the computer will start. Has anyone seen this before?

I know the trick of pressing/holding the power-button to force shut-down. So could this in fact mean my iMac didn't shut down properly? Just guessing.


iMac 2.16 GHz Intel Core 2 Duo   Mac OS X (10.4.10)  
  • Steve Anderson5 Calculating status...
    Currently Being Moderated
    Jul 18, 2007 11:58 AM (in response to Arnd Kaiser)
    Hi,
    Try unpluging your iMac power cord form the wall outlet for a minute then plug it back in - try power button. This worked for me.
    Cheers,
    Steve
    800 mhz eMac super drive 768MBs RAM - 2gig 17 G5 iMac - 24" Stock iMac, Mac OS X (10.4.7)
  • den.thed Level 7 Level 7 (23,325 points)
    Currently Being Moderated
    Jul 18, 2007 4:58 PM (in response to Arnd Kaiser)
    Have a look here > How to reset the System Management Controller < <br>
    17" iMac Intel Core Duo - 2GB Ram -   Mac OS X (10.4.10)   - Maxtor 300GB FireWire - Creative Inspire 2.1 - 2G Nano
  • den.thed Level 7 Level 7 (23,325 points)
    Currently Being Moderated
    Jul 20, 2007 4:17 PM (in response to Arnd Kaiser)
    To shutdown your iMac go to: "Apple / Shutdown" from the drop down menu bar.

    To sleep your iMac go to: "Apple / Sleep" from the drop down menu bar or the auto sleep funtion!

    Using the power button to shutdown the iMac can cause loss of data, file corruption and damage to your HD.

    Go to: "Apple / System Preferences / Energy Saver / Options" Look at "Allow power button to sleep the computer" If the the box is checked then the power button will sleep the computer the first time you push it, then hard shutdown the next time you push it.

    Dennis

    17" iMac Intel Core Duo - 2GB Ram -   Mac OS X (10.4.10)   - Maxtor 300GB FireWire - Creative Inspire 2.1 - 2G Nano
  • den.thed Level 7 Level 7 (23,325 points)
    Currently Being Moderated
    Jul 21, 2007 4:27 PM (in response to Arnd Kaiser)
    Run both Hardware and Repair from your Install Disk 1, see the instructions in the articles below!

    Intel-based Macs: Starting up into Apple Hardware Test

    Testing and repairing from Disk 1

    17" iMac Intel Core Duo - 2GB Ram -   Mac OS X (10.4.10)   - Maxtor 300GB FireWire - Creative Inspire 2.1 - 2G Nano
  • den.thed Level 7 Level 7 (23,325 points)
    Currently Being Moderated
    Jul 22, 2007 6:14 AM (in response to Arnd Kaiser)
    The issues may only be connected by an improper shutdown (power button) with device(s) in use. Sounds like you have worked thru part of the issue, I can only test the FireWire devices I have here. All is OK if I eject and shut down my External HD, eject and disconnect any of my camera's and iPod befor shutting down my iMac!

    More info for FireWire:

    USB and FireWire Quick Assist

    FireWire: Frequently Asked Questions

    Dennis

    17" iMac Intel Core Duo - 2GB Ram -   Mac OS X (10.4.10)   - Maxtor 300GB FireWire - Creative Inspire 2.1 - 2G Nano

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