Finding the Serial Number to Activate Windows 7
Once you download Windows 7 through the MSDN Academic License, you will prompted to enter a product key to activate it. This will require the serial number given during the initial download of the software. This document will walk through where to find it.
2. If you have already downloaded Windows 7 or any other software, it will be under "Your Account" at the top of the page. This is shown below.
You will now be at the page with the necessary information. The location of the serial number is shown below.