You have to plug your display cable into the back of the GPU, that is likely your issue. The motherboard port is for use with CPU integrated graphics, which the ryzen 2600 does not have, so you will get a black screen using the motherboard ports. Your display cable must be plugged into the GPU in order to use it.
You have to plug your display cable into the back of the GPU, that is likely your issue. The motherboard port is for use with CPU integrated graphics, which the ryzen 2600 does not have, so you will get a black screen using the motherboard ports. Your display cable must be plugged into the GPU in order to use it.