Mi2A problem with screen and the phone

Aug 30, 2013
Hi guys i have mi2A since 5 months and i take care of it very well but in the last 2 months i have a problem with the music, when i press the button to open the screen to change song it doesnt open i see black screen, i leave it for some time to try it later but nothing it doesnt open.Know in the last 1 week it restart on its own while im hearing music and again i have the problem with the screen.I have done the factory reset data to make it fix but nothing, and only when im hearing music i have this problems and i dont know what to do.If anyone can help me im all ears :p