You need to type the Router's homepage IP. What make and model Router do your have? By default, most router manufacturers use 192.168.0.1 or 192.168.1.1 as the default LAN IP address. This is the address you would enter into your browser's address bar to access the router configuration page.
You could use the ipconfig command in a Command Prompt window to find this IP address or you could look for it in your network settings: the router’s IP address is to the right of “IPv4 Default Gateway” here's a guide click here