Newer models should reset after 10 seconds. On older models, however, you may need to hold the “Reset” button for 30 seconds. [1] X Research source
After you’ve reset your router to factory settings, you’ll need to set it up again.
If the router light doesn’t stop blinking, power cycle it. That means to unplug it from the wall, wait for 60 seconds, then plug it back in.
After you’ve reset your router to factory settings, you’ll need to set it up again.