Hi everyone. 
My htc m one 9 is shut down morning when I saw it.I pressed the power button and it turned on and after 10 sec it's getting  off and restarting automatically and the cycle repeats....until I interrupt it by pressing power and volume down button and later selecting the power off from android  menu.. main point is my phne  is not starting completely. I tried all the methods mentioned  in the above posts but nothing helped. Is there a solution for this or should  i exchange the mobile.
Any message to my email [Email address removed by Moderator] is also welcomed. 
Thank you