Hoafey that has nothing to do with what I said. The problem, which your not aware of and you didn't read in my response is, the copy of Windows the OP had installed already on the HDD, but as well even with a reinstall on a clean HDD, WON'T EVER WORK. The reason is the Windows DVD as well as the Key on the computer all are tied ONLY to the OEM licenses, which says the Mobo/CPU/BIOS can't ever change.
He has to buy a new copy of Windows, with a new License first. Then he can use DBAN disk wiper to wipe the disk perfectly clean (it does it by the bit / sector level, not like Windows which just resets the first 'bit' that the drive is 'clean' when it is still dirty). The only way the OP can save his 'data' would be to put everything back to the way it was, run Windows Easy Transfer to a external drive, then go ahead with his rebuild, wipe and reinstall of Windows. Once he has the new Windows installed, then Drivers, the the Programs install use Windows Easy Transfer to 'set it back like it was' would be the last step.