Windows 7 MIC not working with HD audio

Last week i bought new PC with Amd A2 X4 630 and MOBO ausu m4a785td-v evo

I have installed Win 7 and fedora 12

In Win7 Mic is not working .. i have installed audio driver provider with MOBO CD .. ( VIA HD audio codec) .. playback is working fine .. Mic is not working ( mic hardware is fine ). please help me ..

Thanks