How to fix a second monitor not detected in Windows 10 and 11

On Windows 10 and 11, you can use these steps to fix a second monitor not detected on your PC, and here's how.
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I turned my E Ink tablet into a second screen and it worked surprisingly well

Boox Note Max's split screen function is powerful for multitasking. The tablet's Android system allows for diverse app usage in black and white. Horizontal split-screen mode is the most practical and ...
PCMag

Corsair Xeneon Edge Review: That's One Seriously Slick Second Screen

The Corsair Xeneon Edge is an innovative second screen for PC enthusiasts who want to add flair and functionality to a custom PC, or at-a-touch productivity features to their desks.