I re-formatted my old laptop and gave to kid. Only problem is I can't seem to connect it to a network . I tried connecting to her network but, it kept telling me to reset the box to the cable network. Did this and still no connection. Can someone explain what I am doing wrong. I really need step by step. She has Comcast with the Xfinity with Windows 7 (Home Edition) Entered username and security id and can't get a connection