I got a router from TP-Link. It has signal Light for power, wifi and port number where the Ethernet cable is connected. But I can't Log in to its configuration using its IP add. I also used the ping command in cmd, but the IP is unreachable. In advanced IP Scanner, the IP status is dead. I already unplug and plug again the power cord of the router. How can I reconnect the router again in to the network?