Hi. Whenever I run something cpu intensive I get a annoying high pitched sound coming from inside the computer. I can not figure out what it is. I disconnected the internal speaker to see if the sound was coming from that but I still heard it. Then I went to see if the fans where making the sounds so I disconnected my 2 in and out fans. Set the GPU fan to 0% with ati tool. Then I stuck a screwdriver into the psu fan and tt Big typhoon fan to stop them. But the high pitched sound came up still when running something intensive such as Prime 95. Then I disconnected my 2 hard drives except for the system disk and it still made the sound. And I monitored the disk usage for the system drive and there were no read and writes when it made the sound. Just cpu usage. So where is this annoying sound coming from and why is it doing it?