Hello, my name is Joseph, and I am writing this on an iBook G4. The serial number is 4H6182DQSE7. I received this from a university professor who was on her way to throw this laptop out, due to it being old and such. There is a locked teacher account and a student account. She nor I know the password for the teacher account, so I am stuck writing this on the student account. I am unable to make changes to the system preferences, install google chrome, or update plugins on mozilla firefox. I presume this is due to a lack in administrator privileges. I would like to update this laptop as far as possible, so I can stream videos and such. My only guess to do this is to factory reset the laptop. Can you help me with this? I have tried restarting the laptop holding the apple + S keys, but it boots up normally without going to command prompt. I am wondering what to do. I want to get this to work without getting a new OS X dvd. Thank you very much.