DELL 4320 Projector Password Reset

Hi All,

Currently at the workplace one of our dell 4320 projectors starts up with a screen asking for a password and you cannot access the menu settings on the OSD either. Is there a way to reset this password? all the user guide says is to contact Dell if you forgot your password, however I have contacted DELL and all they sent me was a user manual... Also is there a master password you can use?