just got a quick question, i have just put together a new rig, and well everything is working fine, no problems.
but i do get this one strange issue, whenever i move my mouse about, i hear like a high pitched noise but only when i move the mouse, it seems to be perfectly in tune with the mouse movements, just a tiny nudge and you can hear a quick squeak, and constant movements, the sound is ongoing and seems to be coming from my mobo somewhere.
I'm pretty sure i have heard this noise in the past, maybe on a friends computer, but it really is annoying.
Do you use onboard sound? If so disconnect your speakers and see if the problem goes away. If it doesn't, try unplugging your case speaker from the motherboard. Either of these two could be your problem.
make sure ur cables are neat... eg i have my power cable under everything else.. i have my keyboard, mouse and network ontop of the lot... also make sure they are pluged in good and not wraped around each other..... i had this same problem and it helped me..