The answer is a failing motherboard VRM. This is the most likely cause because the CPU overvoltage error and random restarts under load point directly to unstable power delivery, not the CPU itself. The voltage regulation module (VRM) on an aging motherboard can degrade over time, causing it to supply inconsistent voltage that triggers the system’s overvoltage protection and leads to POST failures. On the CompTIA A+ Core 1 220-1201 exam, this scenario tests your ability to distinguish between CPU thermal issues and motherboard hardware faults—a common trap is replacing the CPU when the VRM is the culprit. Remember that if CPU temperatures are normal but you see an overvoltage error, the power delivery path is the suspect. Memory tip: “Voltage goes to the VRM, not the CPU—if it’s unstable, the board is the blame.”
220-1201 Motherboard Practice Question
This 220-1201 practice question tests your understanding of motherboard. 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 technician is troubleshooting a PC that randomly restarts under load. The CPU temperature is normal, but the system sometimes fails to POST with a 'CPU Overvoltage Error'. The motherboard is a few years old. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The motherboard VRM is failing
A 'CPU Overvoltage Error' typically indicates the motherboard's voltage regulation module (VRM) is failing or the BIOS is incorrectly applying voltage. Aging VRMs can become unstable, causing overvoltage protection to trigger. This is a motherboard hardware fault, not a CPU issue.
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 CPU is overheating due to a failing cooler
Why it's wrong here
The scenario states CPU temperature is normal, so overheating is not the cause.
✗
The power supply is delivering too much voltage
Why it's wrong here
A PSU can deliver unstable voltage, but the error is specific to CPU voltage, which is regulated by the motherboard VRM.
✓
The motherboard VRM is failing
Why this is correct
A failing VRM can cause voltage spikes or incorrect readings, triggering overvoltage protection.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The BIOS needs to be updated to support the CPU
Why it's wrong here
A BIOS update might fix compatibility issues, but an overvoltage error indicates a hardware problem, not a missing microcode update.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Trap categories for this question
Scenario analysis trap
The scenario states CPU temperature is normal, so overheating is not the cause.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 220-1201 question in full detail.
Identify which 220-1201 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Motherboard — This question tests Motherboard — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The motherboard VRM is failing — A 'CPU Overvoltage Error' typically indicates the motherboard's voltage regulation module (VRM) is failing or the BIOS is incorrectly applying voltage. Aging VRMs can become unstable, causing overvoltage protection to trigger. This is a motherboard hardware fault, not a CPU issue.
What should I do if I get this 220-1201 question wrong?
Identify which 220-1201 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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