Look for a sheet titled "Essential Product License Information" inside the box. It contains a Download Access Code that you must enter into the Steinberg Download Assistant to generate your unique Activation Code. Online Purchase:
Steinberg sometimes offers free updates if you activated your version right before a new release. Check if your code qualifies for a newer version of Cubase. Moving to the New Steinberg Licensing System cubase 7 activation code list
Steinberg (now part of Yamaha) has never released a public list of working activation codes for Cubase 7. Each license is and tied to a specific user via the Steinberg Licensing system (formerly the eLicenser Control Center, or Soft-eLicenser). Look for a sheet titled "Essential Product License
If you're having trouble obtaining a Cubase 7 activation code or prefer not to use the software, here are some alternative DAWs: Check if your code qualifies for a newer version of Cubase