If you have access to a USB or Bluetooth keyboard & mouse. Restart your system and then close the lid so the lid sensor acknowledges the lid is closed your external display should automatically become the primary display.
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If this fails you may have something deeper here than just a messaged up LCD.
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If this fails you may have something deeper here than just a messed up LCD.
If you have access to a USB or Bluetooth keyboard & mouse. Restart your system and then close the lid so the lid sensor acknowledges the lid is closed your external display should automatically become the primary display.
If this fails you may have something deeper here than just a messaged up LCD.