Hi umarali89! Welcome to the site!
First of all, your processor has nothing to do with your sound driver. It's your sound chipset on the motherboard or PCI card that deals with that.
What brand is your computer? What model is it? Is it store bought or custom-made? If it is custom-built, what brand and model is the motherboard?
Use a great little program called S.I.W. its free for home use and will give you ALL the info you need about your computer.
Go here to download it:
http://www.gtopala.com/siw-download.html
Download the "Freeware Version" SIW Standalone (English Only)
We need more information please.