A technician attempts to increase the brightness of a laptop screen by using the function keys but the attempt fails. What could be the problem?

Last Updated: Nov 7, 2020
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A technician attempts to increase the brightness of a laptop screen by using the function keys but the attempt fails. What could be the problem?

  • The laptop battery is bad.
  • The video display driver is corrupt.
  • The inverter has failed.
  • The LCD screen has failed.

Explanation: A failed LCD screen will result in no image being displayed whereas a corrupt video driver or bad battery will not result in a dimmed display. The inverter powers the backlight, which in turn displays and illuminates the image.

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