Check the manual and see if you can force a reset. Here's a download if you don't have it: http://www.nikonusa.com/pdf/manuals... Might be a problem with the battery or battery contacts. Apparently the camera is supposed to be waterproof but a lot of reviews say it's failed after being in the water, although the failure is usually a bad screen or it being totally dead. If you've had it in the water that may be the cause.
How am I supposed to reset the camera when the screen is black?! The manual requires that I select the settings menu and arrow to the correct selection. Not at all helpful when i cannot see the screen.
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