I am trying to overclock my DRAM to 3600MHz from default 2133MHz. Using 4x8gb F4-3600C17Q-32GTZ which is QVL. I am a beginner at this and have been searching from google pretty much about this and found that I should use XMP settings and maybe tweak couple of voltages, which I did. I used XMP settings, and changed the VCCIO and CPU agent voltage to 1.15V. My computer failed to boot after that while the DRAM light (ORANGE) and CPU light (RED) turns on alternately. My computer can boot fine with default frequency though. If anyone familiar with this, please help me. Thanks!