Do you have multiple monitors connected to your computer, but the wrong one is set as number 1? Maybe you accidentally switched them around when you plugged them in, or maybe you just want to change it for a better arrangement. Whatever the reason, it’s easy to change which monitor is number 1 in Windows 10. Here’s how.
First, open the Display Settings by pressing the Windows key + P on your keyboard, then selecting Extend. Alternatively, you can right-click on your desktop and select Display Settings from the menu that appears.
In the Display Settings window, you’ll see a list of all the monitors that are currently connected to your computer. The one that’s set as number 1 will have a 1 next to it, while the others will have a 2 next to them. To change which monitor is number 1, simply click on the monitor that you want to be number 1 and then click the Make this my main display button.
You can also change the Display settings for each individual monitor by clicking on the monitor and then making your changes in the Display section. For example, you can change the Resolution, Orientation, or Position of the monitor. When you’re finished making your changes, click the Apply button.
That’s all there is to it! Now you know how to change which monitor is number 1 in Windows 10.