Me it's me but what was the real workaround for this issue?
A friend of mine has the exact hardware and exactly the same issue!!
There is no way you can install any Microsoft Windows XX 64-bits OS. MS Win 7 64-bits installer goes until the end without any issues or hickups but once the 100% is reached and system reboots Windows won't work.
The interesting part is that Ubuntu 64-bits versions 14.04, 15.04 and 16.04 LTS get installed and everythings works fine, including the 16 Gb RAM.
Thanks and looking forward for any feedback.
F