There are several types of PowerBook G4 Aluminum models.

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PowerBook will not boot past gray screen - no logo.

I reset the pram, reset the PMU, cannot boot in single user mode, do not have reinstall disk.

I have scoured the internet to find several people having the same problem, and have never come across a resolution.

I believe it is some form of corrupted system files.

Guess I will buy the OSX disk and see if that does the trick- my last viable option.

Has anyone had this problem and actually resolved it?

Thank you,

CS

Answered! View the answer I have this problem too

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Have you changed any of your Ram?

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Try starting up in Safe mode by holding down the Shift key. Get an original system disk from Apple for $15

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http://support.apple.com/kb/ht1533

There's a link to start-up combo keys.

You could always try TechTool Pro or Disc Warrior.

I am currently resolving an issue which is quite similar and so far it is looking good. iMac G5 runs so slow when boot from disc. But when the install is done I will find out it the format and install works. I will know in about 2-3 hours.

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Cliff Stevens will be eternally grateful.
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