Hello all, this is David! I'm having a problem with my laptop speakers. When the PC arrived they were all magic and the sound was great but now there's a buzzing sound when the PC volume goes 50%+ or even lower. I can't really tell much more. I only happens with some songs, not all. And it's really annoying. This are supposed to be good speakers, but it happens everywhere, with or without ac adapter, home not home... I don't know what to do since I don't know very much about audio. Thank you very much, I hope you can help me!