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Apple Desktops Discussion of Apple's desktop machines including Mac Pro, iMac, Power Mac, and mini

Restart, Shutdown and Waking problems

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Member Since: Aug 30, 2011
Posts: 42
ggmen1 is on a distinguished road

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Hey guys, I have an iMAC 20" flat panel PPC sphere type system running Leopard 10.5.8. I am having issues with not being able to restart or shutdown my system from the apple icon. I can only shutdown the system from the power button. When I try doing it from the apple icon and choose either restart or shutdown I just get a progress wheel that keeps spinning and nothing happens!!!...also, the computer will not always wake from sleep anymore.....sometimes have to manually shutdown and manually restart!!!! System indicates I have 47.7 GB available. Any ideas or suggestions would be greatly appreciated!!!!! Thanks
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BSD Meister

Member Since: Jun 16, 2012
Location: USA
Posts: 62
BSD Meister is an unknown at this point
Mac Specs: Too many to list. Typically use an Intel iMac for most of my stuff and a Mini for web video.

BSD Meister is offline
Try this link:

Resetting the iMac (Flat Panel) Power Management Unit (PMU)

You didn't specify your system, but a lot of them (if not all of them) have an on board battery. If it's dead or dying it might be the cause of your problems.

Hope this helps.
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Member Since: Aug 30, 2011
Posts: 42
ggmen1 is on a distinguished road

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Thanks, will give that a try.
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