So recently I installed windows 7 via bootcamp. Everything's working like a charm besides the audio. The problem is - I have no sound whatsoever. I've installed the realtek drivers and was trying to install the sigmatel ones from the mac osx disk but I keep getting this error : _ExitError: Error=Device Object not present, restart the system and run setup again. Running W7 ultimate 64bit on Macbook pro 5.5 13''. Any ideas how to fix this?