Help

After Windows updated from 7.0 to 7.1, I lost a license.  Now both Windows are showing as individual licenses even though it's the same computer.  My son needs that last license, but I can't release it.  Hopefully deleting the 7.0 license won't delete Norton on my computer completely, but it's taking a really long time.  I've looked everywhere for someone to contact for help, but there's nothing that I can find.  Any suggestions?  So frustrated.  Help???  Anyone?