RMA'ed the first board. Just got a replacement with EXACTLY the same problem. I'm gonna have to RMA it AGAIN
2. Besides this unaccepetable noise, the MB won't POST with a 'Logitech diNovo for notebooks'-keyboard (BIOS freezes when it shows "50"). Unplug the keyboard and it will boot normally WTF. (the keyboard works on 3 other PC's).
3. And the latest BIOS (129) changes video output to HDMI as default, with no option to change it back to VGA/DVI. So there's no way to enter BIOS with a "normal" monitor that hasn't HDMI-input.
This is symptoms that I would have expected from a small low-cost noname-company, not Intel.