this is running Mango and it has a password lock on it that my daughter set..she cannot remember what the password code is and consequently I cannot get in so that I am able to do a Factory Default reset on it through the software.

I have searched the net and have tried all of the possible key sequences to try and get to a configuration page that is on many forums to get to a manual reset.

I am at and end..will it require me ringing Dell.
Will they have information that not available to the paying public.

Any help will be much appreciated