Asus A52N laptop error help!?

Ok, i dont know if this is the problem but, when i turn my laptop on it comes a error message: Acmon error, cant locate or create or something... And the Problem is; Whenever on my comp, listening to music, facebook, etc.. it FREEZEZ , when there is any sound coming out of the comp, it goes like drrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr… and its irritading! I have to use the off button and start again to make the comp work! Can anyone help me???