[sharpie392]

I had my friend try and put some mod files on my hard drive. I got it back and it made some strange noise as if something was loose when i hooked it up. Is there a way i can either get an xbox hard drive w/ all the basic files? If not can i take another hard drive and put those files on it, and where do i get those files? Is it possible to just put mod files on it and install a mod chip w/ out having original bios?