ok, i tried the instructions from the link and still nothing. i even bought a new hard drive, thinking mine had crashed. getting the same message:
Setup didn't find any hard disk devices installed in your computer.
Make sure any hard disk drives are powered on and properly connected to your computer, and that any disk-related hardware configuration is correct. This may involve running a manufacturer-supplied diagnostic or setup program.
Setup cannot continue. To quit Setup, press F3.