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220-1201 Practice Question: That their laptop's touchpad is not working after…
A user reports that their laptop's touchpad is not working after they spilt a small amount of coffee on the keyboard. The keyboard still works, but the touchpad cursor does not move. What is the most likely cause?
⚠ Common exam trap
The trap is overthinking the failure as a software/driver or BIOS issue when the physical evidence (recent liquid spill, keyboard still working) points directly to hardware damage — candidates who default to 'reinstall the driver' miss the obvious physical cause.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The liquid has damaged the touchpad or its ribbon cable
Liquid spills cause physical damage — corrosion, short circuits, or residue bridging contacts — most commonly to the touchpad's ribbon cable or the touchpad PCB itself, especially since the touchpad sits directly below the keyboard where the coffee pooled. The keyboard surviving while the touchpad fails is consistent with localized physical damage to the touchpad assembly rather than a software or firmware issue.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The touchpad driver has been corrupted by the liquid
Why it's wrong here
Liquid primarily causes electrical shorts, corrosion, or physical damage to hardware components. Software, such as drivers, resides on storage devices (e.g., SSD/HDD) and is not directly affected by liquid unless the storage medium itself is physically damaged, which is a less common and indirect consequence of a spill. Driver corruption is typically caused by software conflicts, improper shutdowns, or malware, not direct liquid exposure.
- ✗
The touchpad has been disabled in the BIOS due to a safety feature
Why it's wrong here
Standard laptop BIOS/UEFI firmware does not incorporate liquid detection sensors or safety features designed to automatically disable input devices like touchpads in response to a spill. While BIOS allows for manual enabling/disabling of integrated peripherals, there is no automatic mechanism to detect liquid and subsequently disable hardware components as a protective measure. Such advanced environmental sensing is not a common function of consumer-grade firmware.
- ✓
The liquid has damaged the touchpad or its ribbon cable
Why this is correct
Liquid spills are highly likely to cause direct physical and electrical damage to sensitive electronic components. For a touchpad, this can involve short-circuiting the capacitive sensor array, corroding the delicate traces on the flexible ribbon cable, or damaging the connector where the cable attaches to the motherboard. Such damage disrupts the electrical signals required for the touchpad's functionality, leading to its failure while other, potentially unaffected components like the keyboard, continue to operate.
- ✗
The laptop's operating system has detected the liquid and disabled input devices
Why it's wrong here
Modern consumer operating systems are not equipped with built-in liquid detection capabilities that can automatically disable input devices in response to a spill. While some industrial or specialized rugged devices might have environmental sensors, standard laptops lack the necessary hardware (e.g., liquid sensors) for the OS to detect such an event. The operating system primarily manages software and hardware interfaces, but it cannot independently sense physical environmental conditions like liquid presence to trigger a protective shutdown of specific components.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
This 220-1201 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 220-1201 exam.