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Jun 14, 2012 11:47 PM in response to BGregby Norman Chew,Thanks for your reply.
I've tried it but nothing seems to work.
I don't even hear the startup tone, just the CD drive turns on for awhile then off, and the fan on indefinitely.
Pressing the power button for 10 seconds doesn't turns off the power. It only turns off when I press shift-cntrl-option-power.
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Jun 15, 2012 12:41 AM in response to Norman Chewby Knucklesmac,Hello,
Have you replaced the memory recently? I've known this to happen when a memory module has been faulty.
If it has extra memory installed, maybe try taking it out and start the PowerBook.
Best of luck