I have a laptop it is a LG E500. Like all laptops it has a VGA connector on the side. If I hook a projector up to the laptop and boot I can see the BIOS screen the the start up of XP. After the screen goes to a light blue color the external display shuts down. Once windows is up and running there is no way that I can find to turn the display to the projector back on. The laptop is supposed to toggle to the External display with a Function F3 but I cannot re-enable the signal to the VGA out. I had thought of phoning LG as the laptop is still under warranty, however, I figured that they would say because it works at the beginning then it is a software issue.
Is there a troubleshooting process that I can follow totest and/or repair this? The OS is XP Pro SP3.