I have a brand new Lenovo G50-30 (literally got it today) and it works fine, however, when I watch videos on Youtube there's an occasional slight freeze and a buzzing noise. It's a problem my old laptop had too, which was a HP. I've turned off the microphone, but I don't know what else to do, or what may be causing it, as it's freakin' new.
Read more: Laptop Buzzing Through Speakers?