How to Change the Primary Monitor on a Laptop. The Home Premium, Professional, Ultimate and Enterprise editions of Windows 7 can extend your laptop's display to include an external monitor.

This guide will show you the settings you need to change to use a laptop with an external monitor and lid closed on Windows 11.

My first guess is changing the primary monitor back to the onboard video. Unfortunately, I don't know of a way to do that without loading with dual monitors, which is currently impossible.