http://www.nikonchat.com/coolpix-shutter-stuck/

Nikon stuck shutter button?
So I believe something in my bag may have pushed in the shutter button. So not half of the button goes inside more than the other and it’s preventing me from turning the camera on.
I have a Nikon Coolpix L100.
You might seek the help of a pro. It’s probably a simple matter of opening the camera and releasing the shutter release.