Windows lets you select your display’s resolution from a reasonably long list of resolution settings that you can pick out. Back in Windows 7 you had one recommended setting and one really low setting for your display and you could select other settings on the resolution slider in Control Panel. Windows 10 give you more options but if it isn’t listing the optimal resolution for a connected display, or it isn’t listing the one you want to use, here’s how you can add it.
Open the Settings app and go to the Display tab. Click Advanced Settings and scroll down to the very bottom of the advanced settings screen. Click ‘Display adapter properties’.
This will open the properties for the display adapter. In the Adapter tab, click the ‘List all modes’ button. This will open a new window listing every single resolution that your display can support. Select it here and click ‘Ok’ followed by ‘Apply’ on the properties window.
The resolution you’ve selected will now be applied and you will have the usual option to revert to the previous one if you don’t like it. If you’re on Windows 7, you won’t have the Settings app to go and will instead use the Control Panel app.
In the Control Panel app, go to Control Panel\Appearance and Personalization\Display\Screen Resolution and click Advanced Settings. This will open the Display Adapter’s settings. The rest of the process will remain unchanged; click the ‘List all modes’ button on the Adapter tab, select a resolution, and apply it.
It goes without saying that you can’t set a resolution that the adapter doesn’t support. It’s a hardware limitation that prevents this and not your operating system. You might find this particularly useful if you’ve connected more than one display and one of them isn’t displaying in the correct resolution.