Resetting the router wipes the current configuration and brings it back to default settings. It also helps to remove any error the router might be facing. Let’s see, how to reset ATT Uverse router. Press and hold the reset button on the router for 10-15 seconds. Wait till the lights on the router starts blinking. Then, release the button and the router will be set to default settings. Wait till the router initialize reboot and then start the router.