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Video cables don’t seem to work

August 10, 2019

I’ve been having a big refresh of the computer hardware in my office—new server, new PCs, etc. Some of the previous hardware was more than 10 years old, and nothing was less than 6 years old, so it was time. All PCs now have Windows 10 and Office 365.

I spent quite a bit of time on my back underneath desks plugging everything in. But for some reason, the video cables weren’t working for the second monitor. I tried them all—VGA, DVI, and HDMI (yes, I have quite the collection!). Nothing. Darn—maybe the video card was faulty, but I doubted this was the case as it happened on each PC. I rebooted the PCs, but that didn’t help. I could see the first monitor, but not the second.

Then I tried turning the second monitor off and back on again—aha! That worked!

It wasn’t the video cables or the video card at all. The monitor had to restart to recognise the cable.

Simple, once I’d figured it out.

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