Hard reset TP-LINK Archer AC4000

Factory reset (Hard reset) The Reset button (hole) is on the back panel of the router. Press and hold (use a paper clip) for more than 5 seconds until the Power LED binks and the router resets. Visit http://tplinkwifi.net to create a new login password.
Firmware Firmware link
Default username N/A
Default password You set it at http://tplinkwifi.net
Default IP address