CompTIA A+ Core 1 (220-1001) — Question 41

A technician replaced a broken LED screen on a mobile computer. The operating system can be seen perfectly on screen, but the touch screen is non-responsive.
Which of the following are the MOST probable root causes for the given failure? (Choose three.)

Answer options

• A. The hardware replacement used is a non-touch-screen version.
• B. The touch screen must be calibrated after a replacement.
• C. The digitizer cable is not seated properly on the motherboard.
• D. The new touch-screen drivers must be installed.
• E. The replacement part is dead-on-arrival.
• F. The LCD panel firmware must be updated.
• G. The grounding screws are not securely attached.

Correct answer: B, C, D

Explanation

The correct answers are B, C, and D because the touch screen may need calibration (B) to function properly, the digitizer cable may not be securely connected (C), and new drivers are often required for touch functionality (D). Options A, E, F, and G do not directly address the issue of touch screen responsiveness after a replacement.