So i have bought an Asrock N68-s ucc and installed it. When I turn on my pc the motherboard screen comes up and i have some options to choose from. (F11 for boot settings, F12/Del for setup etc.) But when I click on a button on the keyboard, there is no response at all. I Have tried 2 different keyboards and mice, no response. I don't think I've done anything wrong while installing the mobo in pc and connecting cables. Can anybody help me?