The 1100T has a DDR3 1333Mhz controller. If you are running the ram at 1600Mhz, then its overclocked so that may be an issue. If thats the case, just downclock your ram.
It looks like on the approved mobo list, the only 4GB stick thats recommended is a gskill 1333Mhz:http://www.biostar.com.tw/app/en/mb/introduction.php?S_ID=522
So again that just points to the board not really able to accept 16Gb at abopve 1333Mhz speed. It may not even support 16GB of that particular ram. Always check the motherboard approved memory list before purchasing memory.