Hi and Welcome. My Name is ***** ***** I look forward to assisting you today with your question.
Which Nintedo device is this ? Wii U, 3DS etc
You will have to reset your Nintendo ID password. Follow the steps below to reset it.
To reset the Parental control password, you need to contact the Wii Customer support and they will give you a master PIN. You can call Nintendo on this number -> 001(###) ###-####/strong>
Call the above number from your phone and they will give you temporary parental PIN/password ***** you can use to to reset the code on Wii U. Let me know how it goes please.
You can call the above number the customer support is available at 6:00 am – 7:00 pm (PST)
(If you see Forgot PIN option on the screen, reset it from there)
Refer this article --> http://www.nintendo.com/consumer/info/en_na/parents.jsp
(Select Wii U in left column, and select Forgot Parental Control PIN)
You're welcome. If you have any difficulty, please let me know and I will be here and I will continue to help you.
If he setup his email on it (for Nintendo ID), then you also need his email password ***** that you can open the reset email sent by email to view the temporary password.