Password for Dell 3400 MP Projector

Please help. When I switch on my Dell 3400 MP Projector, I get the message "Please key in the password" PPID: TW-OM8591-70641-74E-0117. I lent out the projector to a friend to use but they tell me they didn't insert any password. I have tried to reset the password by trying to reset to the factory settings but I cannot access the OSD menu. The Projector is stuck at the window asking for a password and I cannot use the projector at all. Please help!