Looks like you have bad RAM / memory causing trouble, check this support link from apple support. http://docs.info.apple.com/article.html?artnum=95052 Daniel J. Brieck Jr. On Nov 18, 2005, at 6:52 PM, Dale Hoffman wrote: > What does this sound like? > > G4 won't boot, instead sounds three beeps followed by start button > flashing three times continuously. > > > DaleH