When I did my fresh install of windows, both monitors briefly worked just fine until I had to restart my computer after installing the AMD drivers, so it is absolutely a driver issue.

Primary is listed as Primary/Master/Discrete, secondary is listed as Linked/Discrete

The Radeon software DOES detect both graphics cards like normal.Thought that was related, so I reinstalled windows and the driver issue has persisted. I even did a startover on my windows 10 because I was running into issues with windows update not working. completely uninstalled drivers, restarted, unplugged secondary monitor, and plugged it in AFTER reinstalling drivers.disabled/reenabled both graphics cards through device manager.There's nothing wrong with the monitor or cable itself, as if I plug it into the primary graphics card to test it, it works fine. I'd fallen behind on updating my drivers (sat at 21.2-something for a while), and to troubleshoot some unrelated issues I was having with a game I was trying to run, I decided to update my drivers to 21.4.1.Įver since, my secondary monitor will NOT detect. I've never had any issues getting the secondary monitor to connect.

I have two Radeon RX 480 graphics cards in my computer (no crossfire), and I've always used two monitors: both HDMI, one plugged into each graphics card. I'm just about ready to rip all of my hair out, so hopefully you guys can help me.

Reinstall monitor driver windows 10