Heratech

I just formatted my Vista install and installed Windows 7.Microsoft being Microsoft it assumed it was the only OS on my disk and replaced grub.To fix:

Do a "Microsoft Update" on Win 7. Install "Windows DirectSound" "ICH AC97" controller.

Or what worked for me (on windows 7 64bit) http://www.realtek.com/downloads/downloadsView.aspx?Langid=1&PNid=23&PFi...

Download the Vista/Win7 (32/64 bits) Driver only (ZIP file) file (AC97).