I've got the original restore disc that came with my mini (1.42GHz G4) but it doesn't want to seem to read from the disc. I know the disc works; this will be the second time I've used it; same disc, same machine. The disc isn't scratched or anything. I plopped the CD in, and turned the unit on. Nothing, just goes to the question marked folder because I wiped the hard drive clean. So I power it off, hold down the "C" key and turn it back on. Both times the CD spins up a couple of times but goes straight to the question mark. Any ideas?