How can I restore device to factory settings
i want to restore my PowerBook G4 to the factory settings
Can you explain more fully what you mean here.
If you have the recovery disk that came with your system you can reformat the HD and re-install the OS and the apps your system came with.
If you are having problems which some setting then you only need to reset the PRAM or your PRAM battery needs replacement as its not holding the settings.