The sound only occurs when I'm playing a game I downloaded on my comp, mind you its not all that demanding and its a pretty old game, Rome Total War. That along with the software for all my components and windows 7 is all that is installed on my computer. Could it be the motherboard? How can i check? I checked the voltage of my rails in the BIOS, and all seem to be within or above by .22volts, so I think we can eliminate that as the problem. The disc drive works like a charm, and I already ran Memtest86 to check the RAM and I had no errors. The processor is most likely working properly, so that leaves the motherboard, the video card, and the hard drive. Thoughts?