Just bought a used airport extreme, only to find out that the previous owner kept it password protected and didn't include what that password was. Ugh! What to do??
1. Unplug the base station from power.
2. Press and hold the reset button with a straightened paperclip, then plug the base station back in while continuing to hold the button for approximately 5 seconds until you see the three status lights glow.
3. Release the button. The base station will factory default reset.