My Laptop Sound Driver DoesNot Work?

Hi Sami and all dear members
I was able to fix the laptop HDD problem, but now i have a nother problem relating to Sound driver, the laptop is

Patriot
model No: N34AS6
the sound driver is missing and i tried many of online but couldn't make it to make it heard, the Realtek AC'97 think so but still when a sound file plays with real player or any other media player it works but NO Sound from the speakers of the laptop...
Strange i can use the Mic But Nosound from it at all...so could anybody help me please..?
Thanks in advance...