I have one HR20-700 that connects to the internet via a powerline adapter. While the connection is slow, I have never had problems connecting and remaining connected. Don't have Whole Home. Yesterday I installed a new cable modem because my old one was near its end of life. Got up and running, and all of my wired and wireless devices were able to reconnect to the router without any problem. Didn't check the HR20 initially, but later in the evening I noticed on the iPad app that it wasn't connected. I restarted the HR20, tried to connect, still nothing. I have checked all cable connections. Nothing else has changed in my setup except the new modem. I have not previously had to use the Manual option in Network Services to get connected. Now, when I try using the Automatic config type, it returns an error saying "unable to start Network Services(<301>)". I don't know how to try the Manual option (don't know what numbers to enter). Can anyone help, or have any suggestions on what I should try next? Thanks.