To resolve this behavior, start your computer from Windows installation CD-ROM ,
and then perform an in-place upgrade of Windows. For additional information
about how to do so, click the following article numbers to view the articles in
the Microsoft Knowledge Base:
315341 (
http://support.microsoft.com/kb/315341/EN-US/ ) How to
Perform an In-Place Upgrade (Reinstallation) of Windows XP
292175 (
http://support.microsoft.com/kb/292175/EN-US/ ) How to
Perform an In-Place Upgrade of Windows 2000
If Setup does not recognize
your current installation of Windows when you try to perform an in-place
upgrade, you cannot use an in-place upgrade to repair your installation of
Windows. In this situation, you may have to completely reinstall Windows on your
computer.