we have a fully funtional windows 2008 server edition that we got on msdn, and today my video card went bad so i had to change it from slot one to slot 2 and when i rebooted the machine, we got to log in screen, once the pass is entered it comes up with a box asking for product key. i entered the one from msdn and it said it was invalid and after 3+ hours on the phone with the "help deak, activation team ect.." (and being hung up on twice) they continue to pass up on from one team to another. any ideas how to fix this?

Hi, For Volume License Activation issues, please contact your local activation center for direct assistance: http://www.microsoft.com/licensing/existing-customers/activation-centers.aspx Tim Quan - MSFT