This is my first ever build and when i went to turn everything on, the motherboard LEDs flashed for a second and then shut off. So I first removed all the connectors, except the 24 pin ATX connector and tried again. Same thing happened. I then removed the motherboard from the case, and tried it again. Same as before. I am not quite sure how to figure out what the true issue is here? I did also try a friends PSU and same thing happened again. How do I know if my motherboard is bad?