When you downloaded Windows from DreamSpark, you were given a product key to use also. Right click Computer
and select Properties
. At the bottom of this screen, choose Change product key
. Copy and paste this in and it'll activate without a fuss. If you have accidentally installed the wrong edition - so anything other than Windows Server 2008 R2 Standard
- then it may not activate.To read more about this, head on over to the ZDNet iGeneration blog.