My laptop (gateway) was working perfectly fine until I plugged in a pair of headphones, then all my sound completely went away. There are other two which I found to be useless so I won't name them. I'm running a Vista Home Premium 6-bit laptop/notebook, and my sound drivers/cards are 'Avnex Virtal Audio Device' and 'Conexant High Definition SmartAudio 221' I had the same problem most of you have or had. Hey guys, I was actually reading all your comments in hopes of finding a solution myself.