I have a corei5 custom build Pc. It has GTX 960 4GB, 600w PSU. Asus motherboard p8b75-m/csm. 12GB RAM. Whenever I try turn on my pc it doesn't boots up. The Dram light blinks and then blinks again and the computer shuts off and this happens again and again. Is have replaced the power supply but the problem is still there. Any suggestions? I have also tried using one ram at a time in all the 4 ram slots but the problem still exists. Plz Help?