Nikon L620 won't fully turn on
My Nikon Coolpix L620 won't turn on all the way. It used to work perfectly fine, and then I left in alone for a couple of months, just to then use it again and take some quick pictures, but with it dying a few minutes later saying, "Batter Exhausted". I let it rest for a few minutes, grab it, turn it on, and try to figure out my shot again, only for it to do this over and over. Now, it will barely even turn on. Sometimes, I'll press the power button and the cylinder part of the camera (I'm not well educated on camera parts) pop open like it's getting ready to go, just for it turn right back off. I've switched batteries a few times, checking to make sure that both of them were 1.5v, and that didn't do anything. Please help!!