I just finished building my PC but whenever I power it on, the Power Button remains green on my motherboard, however, my GPU and CPU fans flicker on for a second and then proceed to turn off. This continues to repeat in a cycle, without my having to click the power button again. When I power on my monitor I get the standard ACER logo pop up but it always results in a "No Signal" message. Someone please help, this is driving me crazy! Anything you can give helps