Your mobo has 1xPCIe 3.0/2.0 x16 port support. So support is available. Clean the PCI port ie graphics card port with a clean dry old toothbrush. Place the graphics card at a 90-degree angle into the port and screw it without vibration. Make sure the PCIE power cable from the PSU is connected to the GPU. If there is still a problem, the motherboard GPU port might be damaged.