Hi, I have recently built a desktop computer, that had minor issues that I had eventually worked around or found a solution to. This issue is an exception. When I first used my computer, everything was fine with sound, until I found that my graphics card was not inserted correctly, and I was running with terrible resolution. After fixing this issue, I had no sound. This was about 10 months ago. On and off throughout this period I began to try and fix this issue, by disconnected and uninstalling my GPU. I launched skype and trying calling someone, but it alerted me that my sound card was missing. I know this is not true, so I have 3 main theories: 1. The sound card was fried (not likely). 2. My graphics card audio overrode the onboard audio, 3. The two (GPU and sound card) were operating on the same frequency. As I have said before, I had sound before I re-installed my graphics card, so I would either appreciate a solution to switch back to onboard audio, or a way to use both somehow. Specs: Motherboard: ASUS P8z77 Graphics Card: Nvida Ge Force 670 Processor: Intel i7 core.