Your computer is a laptop, so it's possible the built-in speaker system may be having a hardware problem.
Here is the download link for version 6.14.10.595, dated 12-28-2006.
Download and save it, close all open windows, then double-click it to install it. Restart afterwards, whether you're prompted to or not.
Go back into the
Conexant AC-Link Audio driver tab and see if the new driver version is listed.
(6.14.10.670 is for the 64-bit version of XP, so it won't install and work for you)
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