I'm going to be completely honest here and tell you that I only registered so I could get the answer to my question. My friend bought a new computer off of ebay and the sound didn't work. The speakers were making a fuzzy noise it wouldn't stop unless I unplugged them or turned the volume all the way down. I checked the bios to see if his sound was on, yup it was. So I went to check his soundcard and it says all his drivers are installed but it says no audio device. Can anyone help me out here? Also, unfortunately, his mom bought it for him so he has no idea any information on it. For all I know, he may not even have a sound card.