Answer to "Turn camera off and on error!"Here's another tip: The Nikon CoolPix B500 uses individual batteries, not a rechargeable pack provided by Nikon or camera stores. Make sure that the batteries you put in are: 1) the right type (AA, D, etc) 2) placed in the slots properly (+ side of battery slot matches + side of battery) 3) fully charged I had the same issue two times, both times, the batteries stopped working. Another thing is that the Nikon Coolpix B500 is not a extreme temperature camera. Taking pictures in freezing or very hot temperatures can cause the camera to slow down or shut down.