Okay couple things.
1. You should never buy a disk with Windows preinstalled. It is against the EULA of Windows to have it installed on a disk that is for sale. So the license that "was" on there is illegal and invalid. You will never get it to activate.
2. You will never get it working. Windows installs hardware drivers for the system that it installs with. Meaning that the mother board, CPU, Ethernet Adapter, Video Card and Sound card all install drivers. All the things that make the PC works install drivers to allow Windows to operate the components. There is no way to buy a drive that is pre-configured for your system, as well as being illegal.
Your only hope is that you can return the drive for a full refund. Cause if not you got screwed out of some money.