i was playing mw3 and the suddenly the controller stopped working and the home button keeps lighting up and the (o.x.square and triangle ) doesn't light up and the controller stopped working.

What kind of controller is it? If it is an aftermarket controller you need to look online for help or call the maker of it. Always buy a regular sony made Dualshock Controller if you want it to last long. It may cost more, but it is worth it.