windows 7 on macbook pro speakers stopped working

When I install Realtek HD Audio Driver/Codec there are no changes and no Audio Manager running!! So, nothing really helpful, he just bumped me to Microsoft. I contacted Apple Support (Chat) and the person I got on the chat is a noob! He told me to uninstall BootCamp or whole Win7.And he gave me a link to Microsoft Support. We recommend that you contact your product's manufacturer for support. These generic drivers may have been modified by the electronics manufacturer to suit a particular product. Please contact your manufacturer or visit your manufacturer's Web site for driver support. Your retail manufacturer is responsible for your product support. We do not manufacture graphics cards, sound cards or modems. We produce integrated circuits that manufacturers design into their audio and video products. I can't contact Cirrus Support, because on their website it's written: The thing I can't understand is - Is MacBook Using Realtek Audio, stupid Cirrus or NVIDIA Audio ? Just to mention, my MB is using only one 'multi' audio jack. Then somehow I updated Cirrus driver to 'High Definition Audio', but Audio-IN is not working, only Audio-OUT (The same thing with Cirrus).

In Device Manager I had 'Cirrus CS4206A (AB13)' and three devices of 'NVIDIA High Definition Audio'. Which audio driver is used by MacBook Pro 7.1? I'm running BootCamp (Windows7 Ultimate 圆4) and I'm having a problem with audio input, so I'm looking for anything taht will make it work.

Windows 7 on macbook pro speakers stopped working