for eMachines ET1161 Desktop (and many others)

http://www.realtek.com.tw/downloads/

http://www.realtek.com.tw/downloads/downloadsView.aspx?Langid=1&PNid=24&PFid=24&Level=4&Conn=3&DownTypeID=3&GetDown=false

Audio drivers available for download from the Realtek website are general drivers for Realtek audio ICs (integrated circuits), and may not offer the customizations made by your system/motherboard manufacturer. To be sure you obtain the full features/customizations provided in your original audio product, please download the latest drivers from your system/motherboard manufacturer's website.