check this out first
Start / Control Panel / Administrative Tools / Component Services / a separate window will open – in left pane click Services(Local) from the tree / Scroll down to Windows Audio service / if the service is Disabled or Manual right click > select Properties > under Startup Type change to Automatic > click Apply / click Start > OK Reboot.
audio is realtek go here
http://www.realtek.com.tw/downloads/...tDown=false#AC
Download the (Executable file) save to desktop, double click downloaded file on desktop to install
The site is slow
Set a System Restore Point before installing drivers just in case
Start / All Programs / Accessories / System Tools / System Restore / select Create a restore point and follow instructions