I unplugged my internet wire and plugged it bak in now I have no internet even though it says its connetced

Hi,
I assume that it is a router. Turn it off and back on. There are usually lights that give some idea of its status. One will blink kind of incessantly but irregularly if it connects. There shouls also be a reset button on the back but it has to be pressed for a short period or it will reset more than you want.
Peace,
Clarke

Crisby is right turn off/on router if it's still not working then turn off/on modem also. If still no connection then connect PC directly to the modem to make sure that you have internet connection directly from the modem.