A method of restoring a computer system to a state it was in when it left the factory starts with receiving a request for a new disk drive for the system. An extended parts list for the computer system is retrieved from a database or other data repository and written on the new disk drive. Software to restore the system, including operating system software and application software is also provided on the new disk drive. When the new disk drive is installed, the restoration software uses the extended parts list to select operating system software and application software to restore the computer and reboot the computer with the restored software.