I got a G4 Powerbook here that will sit @ the apple boot screen for hours on end and will never get in the OS. I called Apple tech support only to find out we didn't buy the extended Apple Care for this thing I cleared the PRAM and the NVRAM, still nothing. I booted with one of the CDs that came with the computer, and ran the extended hardware diagnostics, found no problems. The Apple technician walked me through booting into the command prompt (I think that's what it's called ), then he had me type something, and it went through a process of trying to repair the HD, but that wasn't successful. Anything I can do to get this thing up and running without reinstalling the OS?