I built a PC for a friend about 6 months ago, K8NE motherboard, AMD 3400+ processor. It ran smoothly until he moved apartments. Lately, He's been getting a continuous low buzz from the system, sometimes on startup, othertimes while in the middle of running a program. Aside from being annoying, it hasn't seemed to have any effect on the way the system runs. I found that his heatsink cooling fan was working only intermittently, and after replacing it, it seems that the Motherboard CPU mini-plug doesn't seem to be powering properly. Is this the source of the beep? Does it indicate a bigger problem? Lastly, is there a way to disable the tone?