You should activate your game via Origin.
Download and install the latest version of Origin at www.origin.com/download, close the origin client and go directly to you origin folder C:\Program Files\Origin Games. Run the origin.exe in this folder with a rightclick -> run as administrator. Open your Origin client, click on the Origin tab and choose "Add Game..."
If you having trouble with the activation process in Origin, you can go to following activation page.
Cheers
Basti
