it's 2.4Ghz 13'' macbook pro.I installed all drivers from bootcamp 3.1. But when I plug in headphone, there is no sound in my speaks and headphone in windows 7. But in mac os, that would be fine. And i try to reinstall and update. it still doesn't work.. And it is no red light in headphone connector.But in device manager, in sound part, there are only cirrus logics CS4206A(AB 13), and three NIVDIA High Definition Audio. How to solve this problem? Do you have the same problem?