There is a strange, high-pitched constant squealing sound coming from my motherboard (a Biostar T5 XE). I know it's not any of the fans, or the power supply (powered up the board with a different PSU, and already checked the CPU fan), so it must be coming from the motherboard.
The squeal is about 11000 Hz. The frequency dips every so often, and starts when the motherboard is powered on. It's done this ever since I got it (about 3 months ago when my ASUS M2N32-SLI died).
Any ideas why, or how to fix it? I've installed a mounting kit behind the motherboard (for a Xigmatek HDT-S1283 that won't mount on LGA1156), but other than that, I don't know what could be causing the squeal.
Intel Core i3-530 @ 3.75 GHz
on a Biostar T5XE
with 4GB G.Skill ECO @ 7-8-7-24, 1360 MHz
serving the PowerColor ATi Radeon 4850 @ 770 core, 2002 memory (650/1400 stock)
with data from 250GB Western Digital SE16
powered by a Mushkin HP-550
cooled by a Xigmatek HDT-S1283
all inside an Antec Nine Hundred.