It looks like I don't have much of a choice.

Nothing really worked, I'm upgrading to Windows 7 after all.

Thank you for your replies.

Running the setup.exe displays this error.

http://s10.postimage.org/afojya5jt/error.png

I also tried to right click STWnRT.INF and click install which I think worked but I see a Windows Service named SigmaTel Audio Service that cannot start.

It displays an error indicating the service started and then stopped. Some services stop automatically
if they are not in use by other services or programs.

I can't get Sound to work on SONY VGN-AR71S with Windows XP Pro SP3.

HDAUDIO\FUNC_01&VEN_8384&DEV_7664&SUBSYS_104D2200&REV_1002

I have searched on google and tried suggestions but still no sound.

Sound works only with Windows Vista / 7 for this laptop?

I am frustrated.

Could you help me please?

Thanks.

http://s16.postimage.org/7myf7a1hh/sigmatel_hdaudio_codec.png