Question: My laptop is connected to 2 external monitors (which makes 3 monitors with laptop inbuilt monitor). Windows 10 only offers "second screen only" but no "third screen only" option. Which means that to use one of the 2 external monitors, I need to unplug the other.

I know the monitors are well detected because I can (only) "extend" the desktop to both monitors. So I could work with 3 monitors on "extend" mode, but that's not what I'm looking for.

**How can I use the "third monitor only" without unplugging the second monitor?** (I need to unplug it several time per day which might damage the connections)

Answer: 
Following these steps seems to work

[![enter image description here](https://i.stack.imgur.com/OyXAF.png)](https://i.stack.imgur.com/OyXAF.png)

I discovered I could even add some hotkey to switch (and shut down) the monitors. [![enter image description here](https://i.stack.imgur.com/OzdxF.png)](https://i.stack.imgur.com/OzdxF.png)

\*edit: there is a little bug. If by mistake, I switch to a monitor that isn't powered, there are 2 problems:

1. it doesn't show as "second screen only" but as "extend"
2. it detects the wrong resolution size (it takes the size of the other external monitor. And changing its resolution on windows doesn't work (option grayed out), and changing it using the Intel's "graphic and media control panel" throw an error: intel graphic input signal out of range" ). I need to plug in and out the VGA connector to get it recognized.\*
In case you may be working with windows 11 now you can do the following:

1- Make sure you are in 2nd display-only mode, then go to display settings (by right-clicking on the home screen or just by pulling up settings).

2- Click the monitor that is labeled as 2.

3- In the section at the top that allows for display adjustment, click the drop-down menu directly right of identity, then select disconnect this display.

4- It will bring a pop-up menu asking if you want to keep the changes, click "Keep changes".

This should still keep it connected for when you change to extend or other monitor options but then disconnect it when you switch to 2nd display.

Apologies if anything is unclear. Not sure if this is plausible on windows 10.