I have a Realtek HD Audio IC running under Windows 7. I don't know the codec or driver numbers, and I don't know where to find them. I only became aware of their relevance after reading other posts. My problem is that the default recording device is the microphone, and in fact, it's also only recording device. The result of this is that every ambient sound within the range of the microphone is a part of all audio recordings: conversations, pets, the television, the air conditioner, etc. This is only my second computer. This wasn't a problem with my first computer and I didn't expect it would be. Was I just lucky? I think this is crazy and I can't believe this card was actually designed to work this way. Is this a common problem? Does anyone have a solution?