You will need to perform the activation manually.
1. Press the Windows Logo Key+R. This will bring up the Run dialog box.
2. In the Open: box, type slui 4 and press OK. This will start the manual activation wizard.
3. Select your Country in the drop down menu and click Next.
4. The wizard will display a Toll Free phone number. Leave the wizard open on the computer and call that phone number.
You will be given some recorded options. Select the option to talk to a live representative.
The representative will manually activate that system for you.