Sounds are Not Working of Acer Aspir 5730z

Hello,
First of all, I appreciate your effort to solve the problems on line.

Well, I am also using the Acer Aspire 5730z, but one major problem I am facing that Its sounds are not working. No headphones, no built in speakers, no microphones as well.

I lost my disc of drivers, but I tried my level best to find these drivers on net but in vain. So, please tell me the solution of this problem so I may enjoy this awesome laptop's functionality.