Internet connection not showing up from control panel?

[Playtom]

If you go into the control panel, you should be able to click on the network connections icon. If you've clicked it, a window will open up displaying all of the network connection you've installed, once there, you can click on a specific connection, and in the support tab, click "repair" and the system will try to repair the connection itself.

If this doesn't work. Then try to plug-in your internet wires correctly, i always plug them off and plug it in again tightly just to make sure that they work. And this is one of the many common reasons why internet connections suddenly stopped working.