I have bought Asrock J3455-ITX combo motherboard, which says DDR3L 1866 So-DIMM, I am using Crucial 2-8GB DDR3L-1866 SODIMM 1.35 CL13. The machine does not boot. I tried with old 2-4GB (DDR3-1333) working perfectly alright. What is it wrong.. why the specification mentioned in the motherboard...