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TICKET ARCHIVE -> reboot after power failure- OS X

thomai - Jan 15, 2006 - 6:50 pm

Hi,
I have a G4 Power Mac OS X (lil over 3 yrs. old) that will not power up after a power outage yesterday. The power button light is on...thats about it. Any help is greatly appreciated.
Thanx
T

philsto - Jan 15, 2006 - 7:14 pm

I am assuming you held down the power buttoon for four seconds and forced the computer to shut down.

If so you should try resetting the PMU

http://everythingmacintosh.com/techn....em/General/71

thomai - Jan 15, 2006 - 8:03 pm

holding down the power button for 4 or 10 seconds for that matter, did nothing.
the power light is on dimly as if I've put the computer to sleep. It does not shut down unless unplugged. I have replugged and tried holding c as i pusherd the power button, again, nothing.
same results with ctrl option shift
ctrl option eject

any idea what might work?

what is PMU?

philsto - Jan 15, 2006 - 8:09 pm

PMU is the Power Management Utility button, and the settings can become corrupted, resetting them might fix your peoblem.

Holding down C will start from CD, so if there was nothing in there...

Followthis link and follow the directions toward the bottom, which describes resetting the PMU for your model...

http://everythingmacintosh.com/techn....em/General/71

Phil

thomai - Jan 15, 2006 - 8:15 pm

thanx- i'll check out the link