As a part of my efforts to get the Windows 7 computer running again I bought two of the WD 2TB hard disks, one that I restored using Retrospect and that we are working on now, and the second to do a clean Windows 7 Pro install. With the clean Windows 7 Pro install the Windows Update feature also does not work and displays the same error message as the restored Windows Home Premium SP1. This is just FYI.