So this is my first PC build and I am encountering problems right off the bat. When I plugged in my fully assembled motherboard into its power supply and turned it on, the power supply and the motherboard LED blinks around every 5 seconds. Even when I removed the ram, gpu, and graphics card, the blinking remains. When I plug in a monitor, nothing shows up; it just keeps blinking away. What should I do? The adapter brick I am using has a European AC plug, which I placed an outlet adapter over to fit into American outlets. Could this be the problem; because not enough power is supplied to the power supply? Or is it that I have a defective motherboard or power supply?