- A
One of the power supplies is faulty
Why wrong: While a faulty PSU can cause boot issues, dual PSUs are designed to provide redundancy; if one fails, the other should still allow the system to boot, and the beep pattern would likely be a standard code.
- B
The motherboard's VRM has been damaged by a power surge
A damaged VRM can cause irregular power delivery to the CPU and other components, resulting in non-standard beep codes and failure to boot.
- C
The ECC RAM has detected an uncorrectable error
Why wrong: ECC RAM errors usually produce specific beep codes related to memory, not continuous non-standard beeps.
- D
The CMOS battery has been depleted
Why wrong: A depleted CMOS battery can cause BIOS settings loss but does not prevent booting or produce continuous beeps; the system would still post with default settings.
Unknown POST Beep Pattern After Power Outage
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 server motherboard in a data center fails to boot after a power outage. The system has dual power supplies and ECC RAM. When power is restored, the motherboard's POST beeps continuously in a pattern that does not match any known code for that manufacturer. Which component is most likely causing this issue?
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.
Quick Answer
The answer is a damaged voltage regulator module (VRM) on the motherboard. When a POST beeps in an unknown pattern after a power outage, it typically indicates that the motherboard’s power regulation circuitry has been compromised, not the power supplies themselves. A power surge can fry the VRM, which converts incoming power to stable voltages for the CPU and memory, causing erratic beeps that don’t match any manufacturer code. On the CompTIA A+ Core 1 220-1201 exam, this scenario tests your ability to distinguish between failed PSUs and motherboard-level power faults; a common trap is to blame the dual power supplies or ECC RAM, but continuous, non-standard beeps almost always point to the VRM. Remember the mnemonic: “No code, VRM load” — if the beep pattern is unrecognizable, suspect the voltage regulator.
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 motherboard's VRM has been damaged by a power surge
Continuous beeps that do not match standard codes often indicate a power-related issue, such as a failed voltage regulator module (VRM) on the motherboard. Power surges can damage the VRM circuitry, leading to erratic POST behavior. The dual PSUs may be fine, but the motherboard's power regulation has failed.
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.
- ✗
One of the power supplies is faulty
Why it's wrong here
While a faulty PSU can cause boot issues, dual PSUs are designed to provide redundancy; if one fails, the other should still allow the system to boot, and the beep pattern would likely be a standard code.
- ✓
The motherboard's VRM has been damaged by a power surge
Why this is correct
A damaged VRM can cause irregular power delivery to the CPU and other components, resulting in non-standard beep codes and failure to boot.
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 ECC RAM has detected an uncorrectable error
Why it's wrong here
ECC RAM errors usually produce specific beep codes related to memory, not continuous non-standard beeps.
- ✗
The CMOS battery has been depleted
Why it's wrong here
A depleted CMOS battery can cause BIOS settings loss but does not prevent booting or produce continuous beeps; the system would still post with default settings.
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.
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.
What to study next
Got this wrong? Here's your next step.
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.
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Motherboard — study guide chapter
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Motherboard practice questions
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FAQ
Questions learners often ask
What does this 220-1201 question test?
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's VRM has been damaged by a power surge — Continuous beeps that do not match standard codes often indicate a power-related issue, such as a failed voltage regulator module (VRM) on the motherboard. Power surges can damage the VRM circuitry, leading to erratic POST behavior. The dual PSUs may be fine, but the motherboard's power regulation has failed.
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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Last reviewed: Jun 18, 2026
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.
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