How to Reset HP Deskjet 3631?
Power on the HP 3631 printer. Press the 3631 printer’s Wireless and Cancel buttons and continue holding them for three seconds. Release the buttons and then connect the HP 3631 machine to the router. To power reset the HP Deskjet 3631 setup, follow these steps. While the HP 3631 printer is powered on, detach its power cable from the Power port. Detach it from the wall outlet as well. After about a minute, reattach the HP power cable first to the printer and then to the wall outlet. The HP 3631 printer is now reset.