Yep, I cant recommend the F-I90HD either, I sold one on here as faulty becuase half of the dimm slots didnt work and the new one I bought as replacement is pretty dire aswell.
They are just not very well made imo, the onboard HDMI was dodgy (I now use a HD3850) with the sound only working now and again, the bios is gash, I had allsorts of problems with checksum errors after flashing it, thr NB heatsink is useless and yes, loose.
It simply will NOT run my geil LL ram at the 4-4-4-12 timings it should run at (not even with the recommended 2.1 volts or even 2.3 volts).
My mate also had one which just failed during a simple restart, he had to RMA it to ocuk.......he ordered a different board instead (matx gigabyte board).
I will be replacing mine at some point, its not too bad now I use a grfx card but I want something that will actually run my ram at its rated speed.