I had a wiring guy come out to re-cable a office. When he was finished 2 of the other offices close to it and in the same patch panel had problems. One office the network cable to the computer had to be replaced and another office is now totally dead and it looks like the ends of the network cable connected to the laptop is smokey black, and the network card (both wireless/wired) is no longer working. I saw to wiring guy unplug cables from the patch panel and then insert the cable toner into the jack, moving it around. I know nothing about this, but thought maybe someone on this site could tell me if this could have caused the problems with the other 2 offices.