Hi I just got a new motherboard and wanted to test it so I stuck in the psu, some ram and my cpu/fan and plugged a hdmi cable in... I shorted the power on the mono to switch it on. The psu starts, cpu heats up and cpu fan also runs but no beeps or sign of anything on the monitor, is this a faulty motherboard or cpu or just a case I need a gpu installed? But still wouldn't I hear any beeps? Mobo is msi z87-g41 and cpu is i7 4770k