MacBook Pro Won't Boot

[oana]

i have a macbook pro 15'' and i cannot boot anymore...can anybody tell me the comand with wich i can boot?it has inside the cd but it doesn't do anything...please if anybody can help us me...i am desperate

 

[BlueRevolution]

Could you be a little more specific? What exactly does it do when you press the power button?

 

[Solemony]

Try taking out the battery and putting it back in. Did you try resetting the Pram?