Hard reset TP-Link TL-WR740N

Factory reset (Hard reset) The reset button hole is on the back of the device – it has RESET written under it with hard to notice white letters. Press the Reset button with a thin object (like a paper clip), hold for five seconds and release. Wait for the TP-LINK router to reboot.
Firmware Firmware link
Default username admin
Default password admin
Default IP address 192.168.0.1