So the primary issue is a lack of signal to your monitor; correct? Are you using onboard graphics or a separate GPU? If you have a CPU that supports onboard graphics* you should plug into the the motherboard graphics port and see if the problem persists.
* Integrated in the AMD Ryzen™ with Radeon™ Vega Graphics Processors
Multi-VGA output support : HDMI/DVI-D/D-Sub ports