To restore the default password for your Arris modem, you can perform a pin-hole reset. To do this, locate the small button on the back of your modem and hold it down with a paperclip or needle until all lights are off (about 10 seconds). This will restore all of its default settings which includes reestablishing a new wireless network name as well as WiFi channel number. If that doesn't work, call customer service to have them change/delete it for you.