Open network and sharing center, choose manage wireless networks and remove all the old profiles that are present (they're not doing any good anyway). What are you using for a wireless router, manufacturer name, model name, model number, rev. #number. You may want to use the manual reset button on the back (paper clip in small hole to press recessed button) to get that back to factory settings. Make sure that if you have PPPoE dsl, that you have the username and password to setup the WAN side of the router after the reset.