I'm not sure what's wrong on my motherboard or even if it is my motherboard. I'm currently half way building my machine and about a week ago when the 4 pin cpu plug is in its correct socket the motherboard cuts out after half a second. But the board works fine when its not in, except for the fact my Cpu's on. I'm not sure if it's my power supply or the Motherboard. Motherboard - MSI 770-C45 400W Corsair Power Supply MSI have said to clear CMOS on the Bios but I can't get to it as it's not fully built. They also said to preferably use a different power supply. I'm not sure what they're saying as it sounds they're making me go through all solutions. The Power Supply is new of course also. What would you do if I was in my situation because I really don't know what to do or what the problem is. Edit Update - It was infact my motherboard as i went to the tech guys at pc world to help. Now my cpu might be broke and its really annoyed me.