Question Mark folder in my mac notebook

Hey if you have the Utilities disk or any Mac OS install disk, place that in the computer, restart and hold down the c key.
That prompts the computer to boot from the cd.  If it gets past the question mark folder, then we are making progress.
At this point exit out of the installer, (unless you want to do a new install)  look through the top menus, to find the utilities options that will allow you to run a diagnostic and repair.  That should get you on the right path.  
Let me know if this gets you back up again.  
I do have some other steps that may also work if the problem persist. 
Have a great one!
enov8  = )