japps2 :
need more info on your system...what ram set? what CPU? what motherboard? are you overclocking? did they work before, or is this a new build? do you have a way to download Memtest86+ to test the ram prior to launching Windows
RAM - Dominator Platinum 4x4Gb 1866 Mhz CL9
CPU - i7 4770K
Motherboard - MSI GD65 Gaming Z87
The build is new except for the 2 harddrives.
HDD: seagate 2tb 7200 rpm
SSD: Samsung 128 Gb something.