You can use DisplaySwitch.exe /internal to change the display settings to use only your primary monitor, and DisplaySwitch.exe /extend to switch back to your multi-monitor setup. More info here. Works on Windows 10, too.
You can use DisplaySwitch.exe /internal to change the display settings to use only your primary monitor, and DisplaySwitch.exe /extend to switch back to your multi-monitor setup. More info here. Works on Windows 10, too.