I have recently just bought a gigabyte rtx 2060 windforce oc Rev 2.0 and once I’ve put it into the motherboard and connected the HDMI and psu I turn on the pc but there is jus a black screen and after a while it says there is no HDMI detected. Have a 600w psu cooler master silent pro and a old motherboard with a pcie gen 2 x16 slots. Don’t know what the problem is.