Driver issue is the most common cause of sound card problems.
Make sure you have the latest version of the driver.
Important: If you are using Internet Explorer as your browser, a browser Security Warning dialog box displays like the one below.
You will need to click Run to install the application.
Recommended: To get the most current drivers for your Sound Card, download the driver installer below.Sometimes, it is the operating itself and not the hardware that is causing the problem.If that is so, replacing the sound card or the motherboard will never resolve the issue.To access it, simply click on Start-Run and then type sfc/ scannow.Make sure you have the Windows CD inserted in your CDROM drive. Also, in the course of your troubleshooting, before proceeding to hardware replacement, consider reinstalling the entire computer system first.