I want to download sound driver.

@vanney2007
If you don't know to much about your sound, or pc hardware do folowing:
1. go to FileHippo and download Everest free edition
http://www.filehippo.com/download_everest_home/

2.install it

3.start Everest and click on "Computer" icon then "Summary"

You'll see all your PC's hardware, so search for something called "sound" or "Multimedia".
If you have sound card integrated on your motheboard check web page of your motheboard manufacturer.

You will first need to identify what kind of soundcard your system has. Is is a separate card or an onboard type?

For the onboard type - find out the motherboard details. You will find appropriate sondcard drivers on the motherboard website itself.

If the soundcard is an addon-card, open your PC cabinet, and see what type of soundcard has been fitted. (Make / company, 16/32 bit etc). You will find the drivers on the manufacturer's website. Also try opendrivers.com