That song is the safety alarm on your motherboard that is for detecting too hot of a temperature. Need to look at your case. Clean the fan vents of dust. Also check the heatsink on your cpu. Make sure it has some themal compound on it between the cpu and heatsink. Make sure the fan(s) are running in all the vents, especially the cpu heatsink. You can purchase extra fans for your case at local computer supplies if your case has the available mounts for it.
I would also suggest using the following program to watch your temperature.