More information about your computer would sure help. Operating system used, make and model of computer, what have you tried already to fix the issue? How much RAM is installed? The more information you give us, the better informed our answer will be.

In the meantime, try visiting the computer manufacturer, or the audio driver manufacturer's website and download/install their latest drive for your sound card. See if that takes care of the problem.

Next, try uninstalling, or at least, disabling unnecessary backgrounds programs which could be using memory/resources.

And next, because malware could be an issue, click on the link below and follow the instructions to the letter.

“Expand” the post titled: "Please try this" at the link below:
http://www.cnet.com/forums/post/f742c795-5881-433b-a29b-6d758efe5cd3/

Hope this helps and let us know what you find.

Grif