This article will show you how to reset the Tenda F303 Router to factory default settings.1. Press and hold the reset button on the back of the router for 30 seconds - you may need a small object such as a paperclip to do this. 2. The router will now begin to flash all of its lights, except for the SYS and WPS lights which will go off. 3. Several seconds later the router is now reset and it will display the PWR, and WiFi lights steady, with the SYS light blinking. Now the router is reset to factory defaults.