I run off a HP Pavilion m9150f PC. A few days ago my computer stopped recognizing my sound card. (probably because I had a virus) Regardless, I removed the virus and yet the problem continued. I figured I'd skip any hassle by upgrading to Win7 thinking that would fix the problem and still nothing. I've been all over HP's website and I cannot find the correct driver. In the device manager it shows my sound card as an unknown device and when I try to upgrade the driver it can never find anything. I've tried everything I can think of. Please help!