71. A customer is reporting that some of the keys at the bottom edge on a laptop are hard to press and the trackpad buttons require significant force to click. The technician inspects the laptop and finds no signs of cracks or other damage to the case or screen. Which of the following is the most likely cause of the issue?
Answer: C
The most likely cause of the issue is a swollen battery.
A swollen battery can exert pressure on internal components, leading to keys being hard to press and trackpad buttons requiring more force to click. This scenario aligns with the symptoms described by the customer without any visible external damage.
A) The customer dropped the laptop.
While dropping a laptop could potentially cause damage leading to malfunctioning keys or trackpad buttons, the technician's inspection found no signs of cracks or damage. Therefore, this option is less likely to be the cause of the issues reported.
B) The digitizer has failed.
A failed digitizer typically affects the touch functionality of the screen rather than the physical keys on the keyboard and the trackpad. Since the issue pertains specifically to the keys and buttons, this option does not address the symptoms described by the customer.
C) The battery is swollen.
This option accurately explains the hard-to-press keys and trackpad buttons. A swollen battery can push against the keyboard and trackpad assembly, making them difficult to operate. This condition is common and would match the customer's experience without external signs of damage.
D) An open bottle of rubbing alcohol fell onto the keyboard.
Although liquid spills can cause keyboard malfunctions, in this case, there is no indication of liquid damage reported by the technician. Since the laptop shows no signs of liquid ingress or other damage, this option is not a plausible explanation for the issues described.
Conclusion
The correct answer is C, as a swollen battery is a common cause of the symptoms experienced by the customer, leading to hindered functionality of the keyboard and trackpad. Other options either lack supporting evidence or do not directly relate to the issues presented, reinforcing that the swollen battery is the most likely culprit.