Hi, I am having a startup problem with a Power Mac G4 I recently got from a friend. They have no idea about which version the computer has or what is wrong with it. The problem is that when I turn on the computer it makes its mac startup sound and then stays at a white screen with a grey apple and nothing else. I have not owned a mac for 8 years or so and I really want to get this one to work (I miss Macs). One thought that I had was that the hard drive was formatted. Any suggestions would be greatly appreciated.