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    drsbj123's Avatar
    drsbj123 Posts: 1, Reputation: 1
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    #1

    Dec 7, 2011, 08:04 AM
    When my Imac goes to sleep it won't wakeup
    When my Imac goes to sleep it won't wakeup. I have to manually torn off power and restart
    cmeeks's Avatar
    cmeeks Posts: 754, Reputation: 64
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    #2

    Dec 7, 2011, 08:45 AM
    First what model iMac are you using and what version of Mac OS10 is installed.
    There is a chance that this issue has been addressed with a software update or a firmware patch, run your software updates until you have applied all available updates, this should help if your problem has been addressed by Apple in a OS update or firmware patch. Also it is a good idea to reboot from time to time, personally I reboot my MacBook Pro every time it comes out the bag, and desktops every two days. Resetting P-RAM and resetting the SMU or PMU (different nomenclatures for the same thing the power management unit for the Imac) may help. Not knowing you hardware or OS I can not get into more detail however here are some links to threads in the apple support forum that may help
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