Try going to Network and Sharing Center at the top of the screen there is an image of a computer, next to it should be an image of a home (if connected to home type network), a building (if connected to work type network) or a park bench (if connected to a public type network). Next to the second image should be a globe representing the internet. You probably can't see all three images.
Under that is a "Connect or Disconnect" link, press the link and complete wizard selecting Home Network in the wizard. When the wizard completes you should see all three.