It is an OEM dualshock 3 controller, I was playing one night, went to play the next day and it wouldn't turn on. No flashing lights or anything. Yes, I have tried charging it and nothing happens... Whats wrong with it?

There is a tiny reset button on the back of the controller that you can press with a pin head. This has solved the same issue for myself several times. After resetting the controller, you will have to plug the USB charger into the PS3 before you try to turn it back on to make sure it syncs up with the console.