This is due to an issue with an older version of the Realtek Audio Drivers.

To correct this issue, please update your Realtek Audio Drivers to WDM_R220.exe or a newer version.

To do this, please visit:

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

Check the "I accept to the above" box.

Click Next.

On the next page, click Go under Download/Site1 that corresponds to the version of your Operating System.