The most common reason video monitors go blank is because users change video settings in the BIOS before they understand how it changes the Video output.

  • VGA Monitors must be plugged in before the system boots. The VGA monitors are detected like any other plug-and-play device, so if the BIOS does not detect the monitor during the first strart up, the BIOS may skip over it and set another video output as the “default” video display.
  • For a stock BIOS, the default video display will always be VGA. Always confirm the VGA video output is properly connected and working before you change any video settings in the BIOS.
  • When setting up an LCD or LVDS we recommend setting BIOS outputs to ”dual” or “clone” mode, and work with two monitor outputs. Don’t disable the VGA output until you are sure both displays are working properly.
  • Before changing any Video BIOS settings; Write down the keystrokes you need to enter the bios, “load default values >> save and exit”

For example:

On the ADLQM67PC:

F7 (enters bios)

>> F5>>F6>>’Enter’>>’Y’>>’Enter’

(system should reboot at this point with VGA output enabled)

On the ADLS15PC: Delete (enters bios)

>> right arrow>> right arrow>> right arrow

>> down arrow>> down arrow >> ‘Y’>> ‘Enter’ >> “Enter”>>”y””>>’Enter’

(system should reboot at this point with VGA output enabled)