Im trying to get this ibook of mine up and running but having some issues. when i turn it on, a lil folder with a question mark pops up. i know it needs an OS, and i tried poping 9.2 in there but when i hold down the c button, the screen flickers and then goes back to the question mark folder. the OS 9 cd is pretty scratched but im not entirely convinced that that is the problem. how can i see if the hard drive is bad?