Originally Posted by burton_o6
If its ethernet, the modem will recongnize the switch regardless of a powercycle or not
That is incorrect. Modems lock onto the MAC address of the device connected to it. If you switch what device is connected to it then you must power cycle the modem in order for it to see that device.
Now for that particular modem you would want to watch your internet LED. if that light is solid you have a internet connection TO the modem. In that case bypass your router and try to connect (remember to power cycle like i explained abovev). Then restart the PC. If you connect to the internet then your router is the issue and you should called the router manufacturer. Now lets say that the internet light is blinking or off. This means there is no connection To the modem. check your connections and call your ISP.