I have installed the cpu ( AMD fx 6300 black edition ) and mobo ( Asus M5a78l-m/usb3 ). I plugged everything into the right slots ( i believe ) and the Motherboard menu will pop up... the options for boot menu and what not are available. When i choose my main HDD to boot up, it will not start, the mobo has a green light on and no beeps are made, i really dont know what the problem is Please help ASAP!