How to Reset my "new to me" previously owned wdtv live hub

I bought a newish hub from another family.  Is there some way to re-set everything so that it become mine, registered to me and with all my settings.  I managed to wipeout all their netflix stuff, but now cannot sign in.  When setting up the network for my wireless router when connected to the TV and then using Discovery when hooked to the computer, it asks for a password and it is not “admin”  Any ideas to make it like it came out of the box.

Reset to factory defaults in the setup menu and re-format the internal drive.