Why does Windows 7 prompt to activate the license (Error 0x8007232b)?

Important: The Windows 7 licence code obtained from ISS (under the terms of the Microsoft campus licence) will only work when used in conjunction with the Windows 7 installation CD borrowed from ISS.

If you receive the Error 0x8007232b (several days after successfully installing the software), please view http://support.microsoft.com/kb/929826/ for details of how to resolve this issue.