Motorola Moto G — phone is stuck on the white screen with the blue M

I was viewing some of my photos and the photo gallery stopped working, it exited me to my main screen. I re entered the gallery and none of the photos showed, they were all black. So, I turned off my phone, to reboot it and it will not go past the boot screen with the world and the M.
It will not turn off. I held the power button down and held the volume down, it will sometimes vibrate one short time, but nothing. The battery has now gone dead so the phone is off. When I plug it in to charge the battery, it goes to the same screen.

I bought the phone new, I have never tried to root it, or do anything to the OS. I have a few games installed, they have been installed for several months.

Can somebody please help me.
The phone is a first generation moto g.

Thanks for the responses. I took the phone to the tech and left it there, they could not pull any of my info off of it. It is still under warranty, so I am sending it back to Motorola. They said they would replace it. I have already gotten another phone to use in the mean time.