I bought this Proscan PLT9045K a few months ago, I charged it up and started to set it up, I put in a password and then I didn't get back to it for about a month. I charged it up again and when I put in my password it just keeps telling me "try again". Do I need to reset it? The users manual is just about useless, so no help there. There must be a way to unlock it, I hope. Please someone help me.