1). Power off your modem/router and leave it for 1 minute.
2). Unplug the modem power cord and regain plugged in.
3). Connect the modem to your router’s WAN make sure that the router is powered “ON”
In this way you can fix your tp-link router, Still if you are unable to do can take help of our experts tplinkwifi.net they are always available for your help just need to visit our official website