How to change your monitor’s refresh rate Now the moment you’ve all been waiting for: it’s time to check your display’s working speed, and change your monitor’s refresh rate if needed.

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.

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.