272 Views 1 Reply Latest reply: Feb 2, 2013 3:02 AM by Klaus1
Try resetting the SMU:
Resetting the SMU on a G5 iMac:
and on resetting the PMU on a Power Mac G5, G4 and G3 :
and also this:
Resetting your Mac's PRAM and NVRAM:
Then restart your Mac. Any better?
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