Yup, took off the white shield - 4 or 5 black, small screws. Then removed the two screws for the BT module and simply reseated it and replaced the two screws.
I've left the shield off as I'm not aiming for aesthetics. Otherwise, Bluetooth seems to be working perfectly.
Yes. YES!
When I initially purchased the X99 and installed a fresh copy of Windows 8.1 Enterprise (64 bit) -- the Bluetooth functionality worked perfectly (and there was a Bluetooth configuring option within the Control Panel).
Then, a few weeks back, my ability to pair and utilize my BT...