- A
The webcam driver is outdated.
Why wrong: If the device isn't listed in Device Manager, the OS doesn't see the hardware; driver issues occur when the device is present but not functioning.
- B
The laptop's BIOS has the webcam disabled.
Why wrong: A disabled BIOS setting would still show the device in Device Manager as hidden; it wouldn't cause complete absence.
- C
The webcam module or motherboard USB controller has failed.
Complete absence from Device Manager suggests a hardware failure of the camera module or the motherboard's internal USB controller.
- D
The operating system needs to be reinstalled.
Why wrong: Reinstalling OS is drastic and won't fix a hardware detection issue at the motherboard level.
Question 964 of 1,020
Webcam Not Recognized: Motherboard USB Controller or Camera Module
This 220-1201 practice question tests your understanding of mobile device hardware servicing. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A laptop's built-in webcam is not recognized by any application. You have checked Device Manager and the camera is not listed. The webcam ribbon cable appears intact. Which component should you suspect next?
Quick Answer
The answer is the webcam module or motherboard USB controller has failed. This is correct because a laptop’s built-in webcam connects through an internal USB header on the motherboard; if it is not listed in Device Manager at all, the device is failing to enumerate on the USB bus, pointing to a dead camera module or a faulty motherboard USB controller. On the CompTIA A+ Core 1 220-1201 exam, this scenario tests your understanding of internal USB device enumeration and how to differentiate between a cable issue and a component failure—a common trap is assuming a loose cable is the culprit, but the prompt specifies the ribbon cable is intact, so you must move up the chain. Remember the mnemonic “No Enum, No Fun”: if the device never appears in Device Manager, suspect the module or the controller, not the cable.
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 webcam module or motherboard USB controller has failed.
Since the webcam is not listed in Device Manager at all, the issue is at the hardware detection level, not the driver or software level. An intact ribbon cable suggests the webcam module itself or the motherboard's USB controller (which typically handles the internal webcam as a USB device) has failed, preventing enumeration. Option C correctly identifies this hardware failure as the next logical suspect.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 webcam driver is outdated.
Why it's wrong here
If the device isn't listed in Device Manager, the OS doesn't see the hardware; driver issues occur when the device is present but not functioning.
- ✗
The laptop's BIOS has the webcam disabled.
Why it's wrong here
A disabled BIOS setting would still show the device in Device Manager as hidden; it wouldn't cause complete absence.
- ✓
The webcam module or motherboard USB controller has failed.
Why this is correct
Complete absence from Device Manager suggests a hardware failure of the camera module or the motherboard's internal USB controller.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The operating system needs to be reinstalled.
Why it's wrong here
Reinstalling OS is drastic and won't fix a hardware detection issue at the motherboard level.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The 220-1201 exam often tests the misconception that a missing device in Device Manager is always a driver issue, when in fact it is a hardware detection failure that must be resolved before drivers can be considered.
Trap categories for this question
Command / output trap
A disabled BIOS setting would still show the device in Device Manager as hidden; it wouldn't cause complete absence.
Detailed technical explanation
How to think about this question
Internal laptop webcams typically connect via an internal USB interface (often USB 2.0) to the chipset or embedded controller. When the webcam module fails (e.g., shorted capacitor, damaged CMOS sensor) or the motherboard's USB controller port is damaged, the device fails to respond to the USB enumeration process (reset, address assignment, descriptor request). This is why Device Manager shows no trace—the device never completes the handshake required to appear in the device tree.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 220-1201 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this 220-1201 question test?
Mobile Device Hardware Servicing — This question tests Mobile Device Hardware Servicing — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The webcam module or motherboard USB controller has failed. — Since the webcam is not listed in Device Manager at all, the issue is at the hardware detection level, not the driver or software level. An intact ribbon cable suggests the webcam module itself or the motherboard's USB controller (which typically handles the internal webcam as a USB device) has failed, preventing enumeration. Option C correctly identifies this hardware failure as the next logical suspect.
What should I do if I get this 220-1201 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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