TestOut LabSim A+ Certification Practice Exam

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Prepare for the TestOut LabSim A+ Certification Exam with in-depth flashcards and detailed multiple choice questions. Each query is accompanied by hints and comprehensive explanations. Ace your certification with thorough preparation!

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What could cause a notebook computer to have no display on the LCD but show properly on an external monitor?

The battery is dead
The LCD assembly is malfunctioning
The graphics card is broken
The external monitor port is defective

The correct answer is: The LCD assembly is malfunctioning

A notebook computer may display correctly on an external monitor but fail to show anything on its own LCD due to issues specifically related to the LCD assembly. This can include problems such as a faulty backlight, damaged display panel, or disconnection of the LCD cable. Since the external monitor relies on the graphics card, and if it is functioning properly enough to send a signal, the problem likely resides solely within the LCD assembly of the notebook. The other factors are less likely explanations for this scenario. A dead battery might prevent the laptop from powering on, but typically, the display would still work if the laptop were plugged into an AC power source. A broken graphics card would likely result in no display on either monitor, as it is responsible for sending the visuals. Lastly, a defective external monitor port would not cause display issues exclusively with the notebook's LCD; it would more likely hinder output to the external monitor as well. Thus, the malfunction of the LCD assembly is the most fitting reason for this particular situation.