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  • Question
  • What should you replace if the brightness or contrast adjustments were malfunctioning on a laptop?


  • Options
  • A. fuse
  • B. led display
  • C. adjustment switch
  • D. led display cable
  • E. None of the above

  • Correct Answer
  • led display 


  • Computer Hardware problems


    Search Results


    • 1. What is the size of the reserved memory area?

    • Options
    • A. 64 kb
    • B. 384 kb
    • C. 640 kb
    • D. 1024 kb
    • E. None of the above
    • Discuss
    • 2. A parity error usually indicates a problem with:

    • Options
    • A. memory
    • B. hard drive
    • C. hard drive controller
    • D. I/O controller
    • E. power supply
    • Discuss
    • 3. One of the major components of a PC is the Central Processing Unit (CPU) which can be best described as:

    • Options
    • A. The device that sends the monitor signals telling it what to display
    • B. The area that regulates all of the system power usage
    • C. The area where all the of the Basic input/output routines are stored
    • D. The area where all of the processing takes place
    • E. None of the above
    • Discuss
    • 4. Dust in a computer actually increases the size of the magnetic fields inside it. This is not good, so you must occasionaiy dust, I trust. What's the best way to do this?

    • Options
    • A. reverse vacuum
    • B. any small vacuum device
    • C. blow real hard on the system board
    • D. use a lint-free cloth and wipe gently
    • E. non-static compressed air
    • Discuss
    • 5. What action will correct patchy, faint, uneven or intermittent print on a dot matrix printer?

    • Options
    • A. Replacing the ribbon
    • B. Replacing the timing belt
    • C. Adjusting the paper feed tension
    • D. Adjusting the tractor feed tension
    • E. None of the above
    • Discuss
    • 6. How many DMA channels are there in an AT class PC?

    • Options
    • A. 3
    • B. 4
    • C. 7
    • D. 8
    • E. None of the above
    • Discuss
    • 7. IDE cables have how many pins?

    • Options
    • A. 25
    • B. 50
    • C. 100
    • D. 40
    • E. 65
    • Discuss
    • 8. A capacitor is measured in which of the following units?

    • Options
    • A. Volts
    • B. Ohms
    • C. Farads
    • D. Resistance
    • E. None of the above
    • Discuss
    • 9. COM1 is typically represented by which of the following?

    • Options
    • A. 15 pin port
    • B. 9 pin male port
    • C. 9 pin female port
    • D. 25 pin male port
    • E. None of the above
    • Discuss
    • 10. Resistance is measured in units of:

    • Options
    • A. ohms
    • B. farads
    • C. helids
    • D. amperes
    • E. volts
    • Discuss


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