I'm going to guess that you have a SATA hard drive that isn't being recognized by Windows because it doesn't have the proper SATA controller drivers. If so, it is a common problem. One solution is to enter the BIOS and see if you can change the mode of the SATA controllers from SATA or AHCI to IDE. If so, Windows installation should then continue on.
If the BIOS does not allow this change, you might be able to install the needed drivers at the F6 prompt to install third party drivers in the beginning of Windows setup. However, this procedure requires a floppy drive. If you don't have one installed, you might be able to use an external USB floppy IF your BIOS supports it.
If not, you can make a slipstream CD which essentially is a copy of a normal Windows CD with the SATA drivers copied to the appropriate folder. With the drivers included on the CD, Windows installation should continue right through. Google for the procedure since there are several guides on how to make such a CD. Of course, you will have to use another PC to make the slipstream CD.