Help!?

Hello everybody,

I was wondering if anyone of you could help me.
I have an iBook since october 2005,; yesterday for first time, it frooze, and then when I turned it on again. instead of turning on as usual the screen turned blank (instead of oppening the Mac operative system). It also does a strange soft noise that lasts on 1 minute, and then in the screen appears the image of a folder with a question sign in the middle. Anyone knows what can it be??

Crossing fingers and thanking for any possible advice,

Maria

Hello, you can try this-
http://docs.info.apple.com/article.html?artnum=58042