When I try to power up the camera I get a set of audio beeps (2 then 3) then nothing happens. I've taken the battery out and reset it back in and still nothing. The charging cradel says the battery is charged and ready. But, I still can't take pictures. The battery is a lithium Ion rechargable NP-40 3.7v 1230mAh. Could the battery be done? When I check it with a volt meter it reads 3.4v.