Is the new battery fully charged?
You mean no lights at all even a quick blink on any other light when you switch it on?
Did you plug the battery in correct way? (I guess it wont fit if its the other way around :-) but there are batteries that doesn't have keyway and they fit exactly even if they are plugged in incorrectly meaning their connectors doesn't reach)
Contact the vendor or manufacturer of your camera if its still under warranty.
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