Right, this could be the problem area as, by default, your RAM will be running at 1.5V and you will need to manually set the voltage to 1.7V in BIOS.
You do this under the MIT Section of BIOS so make this change but don't, for the time being, make any other changes in this section. You will need to set the voltage control to Manual and you will probably notice some red flashing type in BIOS giving a warning about overvolting the system, don't worry about this as your RAM is rated at 1.7V