Is your Windows 10 computer’s screen looking a bit wonky? Did you plug in a new monitor that isn’t working as intended? You might need to adjust your screen resolution. Here’s how.
To get started, click on the “Windows” button located in the bottom left of your desktop. If the taskbar has been moved, the button might be found on one of the other edges of the display.
Alternatively, you can press the “Windows” button on your keyboard.
Next, type in “Display settings.” Click on the option that appears under “Best match.”
Near the bottom of this menu, you will find a section labeled “Resolution.” Click on the arrow next to the resolution that’s currently set to see a drop-down of available options. Select the resolution that you believe best fits your needs.
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Source: How-To Geek