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Helpful answers
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Jun 19, 2014 12:03 PM in response to Lala rdqzby Allen A,Hello Lala rdqz,
You may need to hold the power button for 5 seconds to force your iBook G4 to shut down.
http://support.apple.com/kb/HT1343
Cheers,
Allen
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Jun 21, 2014 3:15 PM in response to Lala rdqzby Ronda Wilson,Hi, and welcome to Apple Support Communities.
Reset your iBook G4's PMU (Power Management Unit) by following the instructions in this Apple Knowledge Base Article.
Good luck!
