I just bought a MSI Z390 Gaming Plus. Everything is properly connected, but there is no video card installed. When I power on, the EZ Debug LEDs are on. First the CPU one blinks quickly, then the DRAM one comes on and stays on. After 3 or 4 seconds the system turns off, and then turns itself back on. The ram worked fine with my previous motherboard. It is DDR4 and so is this new motherboard.