I have 2xiiyama 27" 2560x1440 QHD monitors. The DVI D connector works with neither monitor. It was OK with a 24" ASUS. I've tried resetting a monitor to 1920x1080 but does not work. Fault window shows as signal cable not connected.
Screen does not show in display settings.
Ryzen 9, 64GB RAM. Win10 Home.
Got me floored.