I have a peculiar problem, I cannot record any sound at all. Simply put, the microphone doesn't work. It used to work on Vista until I downgraded my computer to XP. After I installed the driver for my sound card, which is a Realtek High Definition Audio I could only listen to music, which was okay. But now I need the microphone for Grade Seven. Anyways, I looked around and Microsoft proved useless (as always). When I tried to look at the microphone volume stuff, the Line Volume, Mic Volume, and Stereo mix were greyed out. And when I looked in the Control Panel, the Voice recording advanced options were also gone. Please help.