Recover a forgotten Google Fiber password
Your Google Fiber account uses your main Google Account for identification and authentication, so your Fiber password is the same one you use for Gmail, Calendar, and other Google apps.
To recover your password:
Go to the password recovery page.
Enter your Gmail address.
Click Submit, and follow the on-screen instructions.
Follow this procedure to restore your Google Account password if you've forgotten it. You'll be asked a few questions such as your username, Gmail address or previous passwords to confirm it's your account. Answer the best you can to recover or reset your password.
If you have additional problems signing in to your account, try using the troubleshooter in the Google Account help center.