Windows xp sound mixer device driver free download

[jerrylivinus]

my pc can not play any sound file and the volume icon is not displaying on the desktop

 

[ksiemb]

my pc can not play any sound file and the volume icon is not displaying on the desktop

You don't download it. You install mixer device as follows:
Run services.msc from command prompt.
Scroll down to Windows Audio Service.
Make sure it is set to Automatic, double click it and start the service.