TheWindowsClub covers authentic Windows 11, Windows 10 tips, tutorials, how to, features, freeware. Created by Anand Khanse, MVP. When the VGA light on a motherboard is ON , it indicates that the graphics card is having an issue. Maybe it is not seated properly, or there is another issue associated with it. This article lists some fixes if your computer is not showing the display and the VGA light is on. Use these fixes if the VGA light on your motherboard is ON with no display but GPU works...