Or you can try to switch the display type through the video driver software app of the laptop. to the display type, make sure the projector is turned on and the Vga cable is connected, you should have options to change the display type in the video display driver running through windows. ok. Settings should be duplicate the screen, extend desktop to external display, projector, or use the projector as the default primary display device. screen 1.
Then apply it after changing the settings.