Do you have a second monitor connected to your computer, but find that the “Make this my main display” option is greyed out and can’t be selected? This can be a frustrating problem to solve, but thankfully it’s an easy fix. In this article, we will walk you through the steps to selecting this option and making your secondary monitor become your primary display.
First, open up the Control Panel on your computer. You can do this by searching for “Control Panel” in the search bar or by finding it in the All Programs list. Once you have opened up the Control Panel, select “Appearance and Personalization.” Under this heading, click on “Adjust screen resolution.”

You should now see a window that shows your two monitors side-by-side. If you don’t see this, make sure that you have both monitors turned on and plugged into your computer. In the window, find the “Make this my main display” option and click on it. You should now see your secondary monitor become your primary display.
So what if “Make this my main display” is greyed out?
It happened to me a few times that I just couldn’t understand why I am not able to switch this when “Make this my main display” is greyed out in the options window. Here’s what you have to do to fix this. You scroll back up to the area where you can rearrange your displays. Now what you have to do is to click on the screen that you want as the main display and select it. Once selected it will be marked blue. Now you can scroll back down and you can finally use the option as it is no longer greyed out. Success!
Quick steps:
- Open display options.
- Select the right display on top.
- Then use “Make this my main display” option, as it is no longer greyed out.
- Confirm the change and you’re done.

We hope this article helped you fix the problem of the “Make this my main display” option being greyed out. If you have any other questions or computer problems, feel free to reach out to us and we would be happy to help! Thank you for reading.
Photo credit: The feature image has been done by TMC Photos. The screenshots are showing Windows OS, which is owned by Microsoft.