You can not get passwords for equipment if you forget them that is how stuff is designed. You can just reset it to factory. Most you hold a reset switch on the back some you must hold the switch at power on. Read the manual for the router it will tell how to reset it. Then you can set the password to one you remember next time.......you might as well tape a paper to bottom of the router with the password someone would likely steal the router itself if they broke in the house not just get onto your network.