Press the Start button for 40 to 50 second repeat the same procedure two or three times. After this trick if problem resist you can another do another try by replacing the Battery. Or you can call us any time (877-330-0887) or just follow the link http://kindlehelp.org
You need to get the knowledge about the kindle on youtube, I mean how to assemble and disassemble properly. Plug and Unplug the charger. This might help you or you can get back to us (877-330-0887) http://kindlehelp.org