Blackberry bold - can't get phone to work

When I take out charger, it's on and I can see main screen, but after 5 seconds goes dark. Also, can't get into anything, none of the normal keys allow me to key password to get in, basically like it's not able to recognize any keys at all, it's charged and ready I need advise

Thanks

Most of the time the keyboard stops working is because moisture has gotten in your phone. Try these steps to dry it out.

http://forums.crackberry.com/tips-ho...ht-way-318876/