I have a house that I am working on. They have Cat 5E to 4 locations in the house. The setup is to have 3 of the locations set up to hard wire and the fourth is a Netgear "N" wireless switch so the two rooms right near the wireless switch is wireless. I turned off the broadcast of the wireless router so that the only one showing would be the Netgear wireless switch. The house walls are made of cinder block so wireless doesn't go far. The first Linksys router (new one) "N" band 4 port, stopped working. I called Linksys and they said to bring it back to where it was purchased. I put another Linksys "N" router in and the setup worked great the first day. The second sday again it stopped working and the user says he had to take the router out to get one location to work right off the Cable modem. Attached is a copy of the diagnostics the user ran when he could not get the internet on the 4 locations the 2nd day. Any idea what is happening? It seems like routers are getting fried at this location.
Again it is cable coming into the house to the cable modem, then from the cable modem to the Linksys router, then out to the four locations, one being to the Netgear wireless switch. Linksys-issue.pdf