|From the Netgear support page:|
1. How can I to reset and restore the router to factory default settings?
1.1 Press the reset button on the back until the Power light blinks. This takes about 5~10 seconds. (To avoid accidental resets, the small button is recessed. Use a pen or paperclip to access it.)
1.2 Release the button.
1.3 Wait for the router to reboot.
1.4 Log in with the default password. The default username is ("admin") and password ("password").
2. What can I do if I forgot or lost the Password for this router?
Unfortunately, there is no way to recover a lost or forgotten password from a router; you will need to reset the device to factory defaults. However, once the device is reset to factory defaults, you can use the default username ("admin") and password ("password") to reconfigure your router settings.
NOTE: Restoring factory defaults on a device will erase any customizations you have made. You will lose any configurations saved to the device!