Practice Quiz

CompTIA A+ 220-801

Category - 801: Laptops

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A user complains that every few minutes of inactivity the display on his laptop becomes dim. He has not had the problem in the past and otherwise the computer seems to be functioning normally. What do you suspect is the problem?
  1. The laptop’s power cord is not plugged-in.
  2. The laptop’s inverter board is bad.
  3. The graphic card is faulty.
  4. The Toggle Display button has been pressed.
Explanation
Answer: A - If a user’s laptop display is dimmer than normal or dims after a few minutes of inactivity, the laptop’s power cord is probably not plugged-in.

Key Takeaway: In order to save power, most laptops will dim the display after a few minutes (or always) when not connected to power. If the inverter board or graphic card were faulty, the image would never be bright and would be very difficult to see. The Toggle Display button is used in conjunction with the Fn (function) key to switch between external displays (as with projectors).
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