i just got an iBook from my parents, given it is an old one. I guess like four years old. I have never had a mac computer before, but I'm having a ton of trouble with it. The track pad no longer works, but I just plug in a mouse. But now when I turn it one it gets stuck in the load screen. sometimes it tells me to restart it, but that does not work. And the last time that I tried turning it on it gave me a crash screen. Does anyone have any idea of what I should do?