A Technician Replaced a Broken LED Screen on a Mobile

Multiple Choice

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.)

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.