To find out how to restart Spectrum Router, you are supposed to disconnect your router from the power source, and then you must remove the batteries. Now, you must wait for a minute before you put the batteries back. Now, you must reconnect your router to the power source, and then you should wait for two minutes or so. Be patient while the router restarts. Now, the status lights will confirm the router's online status. Now, you must check that your device can successfully connect to the internet.