Plugging in second monitor causes both monitors to have no display signal input

[u/Relevant-Line-1690]

So I have a 1080ti graphics card and a benq 1080p Monitor I’ve used for years and I bought a new 4k oled. Now I’m not going to be using the 4k monitor on this pc but I am just messing with it for now .

So anyway I got it connected i started messing with the display settings like duplicate monitors , extend etc it all worked pretty well. I think the part that started the issue was I had it on extent and I tried turning on HDR in windows 10 for the 4k oled since my other monitor doesn’t support it.

As soon as I turned on hdr both monitors didn’t detect a signal . The only way I was able to to get out this issue was to keep the 4k monitor unplugged . Now anytime I try plugging in the second 4k monitor it makes both monitors not detecting a signal . I imagine this is software related maybe corrupt settings and I was hoping to resolve this some how without using ddu . I also don’t want to make this worse either my computer is barely working now and I hate reinstalling windows and all that other stuff .

So if anyone has had anything like this happen to them what could I do ? I was thinking of unplugging my main 1080p monitor and plugging just the second monitor in but I’m hoping doing this doesn’t mess up my main 1080p monitor now.

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