Solved Why Is New Memory Instalation Not Working Powerbook G4 Aluminum 15 1 1 5 Ghz

Chosen Solution

Just installed memory upgrade 1gb, and when I start computer screen stays black and two bells ring.

According to Apple you have incompatible memory. I am including a link to the Apple startup guide. Ralph http://support.apple.com/kb/HT1547

This is a known issue with the Powerbook G4. Apple has offered some repairs but still denies the problem.