MacBook 2011 will not boot up

Earlier tonight my MacBook would not recognize that it was open so I had to hold the power button down to turn it off. When I tried turning it back on I got the usual screen with the apple logo and loading bar. Except it had some weird colored lines almost like an old CRT television. It won't boot past the grey screen that comes after it and sometimes will turn itself off and start the whole process over again by itself. Pressing shift for safe mode doesn't work and command+r doesn't work either.

Here is a photo of the screen I get when I turn the computer on http://i.imgur.com/447k229.jpg