ok
i feel like you may be intrested in these
files........download ac97ich4.zip under the "File Name" area
these drivers SHOULD work with your system, ive researched this and so well try them
if anything you can delete them later, but they should work, hope it does
Install Notes
Go to unrecognized flag in device manager, select update driver, point to directory where you unzipped files. Worked on mine...