I have a Nikon Coolpix S6500. I have found that these cameras have a "firmware" issue that causes them to randomly fail to power up. There was an update Nikon posted some time ago but it is hard to find now. The problem is that mine did that a year or so and then one day it powered up OK. Now it will not power up even with the battery charged. The question is: How to get the camera powered up in order to install the firmware update and hopefully keep this from happening again.