Sound Static

I have recently upgraded from Vista Home Premium to Windows 7 Ultimate for fun. xD Anyways, I installed everything such as drivers and critical updates from Windows Update successfully. When I installed Crossfire, everything worked fine, it was playing at 60-100 FPS very smooth but the sound turned static every 4-5 seconds. I have Realtek HD Audio, but I am using standerd speakers that aren't HD or 5.1 surround sound. Any ideas on how to fix this?


Btw, my speakers are NOT broken or close to breaking as they have just been recently purchased. Thanks in advance!