How do I change the default screen when I have dual screen on Windows 7?

Solution 1:

Go to:

Control Panel > All Control Panel Items > Display > Screen Resolution

(or right click on desktop > Screen resolution)

There you'll see a graphic with your two monitors labelled "1" and "2".

Select the one labelled "2".

There's now an option:

Make this my main display

Select that and hit "OK" or "Apply".

You should have switched the monitors over.

Solution 2:

you are 80% there already.

In Control Panel\All Control Panel Items\Display\Screen Resolution

• or

Control Panel\Appearance and Personalization\Display\Screen Resolution

right below "Multiple Displays" you should see one of 2 items, This is Your Main Display or Make This My Main display Selecting the graphical representation of the monitor and set what you want the "main Display" to be. that will set what the system deems to be your "primary monitor"

The Number that the display is Identified as , has little to nothing to do with what is set as the main display monitor. Also the ID # has little to nothing to do with what Port of the GPU it is on. It was just how the system put the monitors in Order, as they came in. You have to mess with the registry to change that, and only severly organised people would worry about it .