We had a hell of a thunderstorm a few nights ago. One lightning strike seemed to hit the telephone pole right across the street. I love a good thunderstorm, but that made me jump out of my seat. I think it may have fried some Ethernet stuff in my house, and I could use a little help with troubleshooting. In my living room is a 5-port Linksys switch. Connected to that are a TiVo Bolt, a television, and a Blu-Ray player. Both the Bolt and TV have wi-fi. I don't remember if the Ethernet jack on the Bolt had lights, but nothing illuminates when I plug in a cable, and neither do the corresponding lights on the switch. Switching to a new Ethernet cable didn't change anything. The Bolt has failed over to wi-fi, and trying manually to turn wired Ethernet on even after a known-good cable has been swapped in, fails to connect. It's a little bit different with the TV. When I jack it in to the Linksys, the corresponding lights DO illuminate. A message pops up on the TV Connecting the TV to the switch, lights illuminate, and a message pops up on the screen: Wired network detected. A wheel spins for half a minute, and then, probably failing to obtain an address, the screen messages: No wired network connection. The house is wired for Ethernet. The Linksys in plugged in to an Ethernet jack that runs to a 24-port Linksys switch in the garage, but the corresponding lights on the 5-port switch don't illuminate. Of special note, on the 24-port switch, lights are on for only three ports: to the nearby router, to the nearby external hard drive enclosure (all in the garage), and one other port, which I would guess is to my home PC, which is in a room right above the garage. Everything that's failing on the Ethernet is on the other side of the house: the stuff in the living room, as well as a Roamio in the master bedroom and a Mini in the guest bedroom. No lights are on, on the switch, for those. The Roamio in the master bedroom last downloaded program data on 8/1, and is about to run out. I have switched the Mini to wireless, but that has not been reliable. I probably need to get a connection tester, but I am looking for a logic to troubleshoot with. Sorry for the long post. Please help me!