The answer is a loose or improperly seated graphics card in its PCIe slot. This is correct because a single short beep on most BIOS versions signals a successful Power-On Self-Test (POST), meaning the CPU, RAM, and core components passed their initial checks. If you hear that single short beep then nothing—a blank screen with no keyboard or mouse activity—the system has halted after POST, almost always due to a failure in the video subsystem. On the CompTIA A+ Core 1 220-1201 exam, this scenario tests your ability to distinguish between a POST code that indicates success and a subsequent display failure; a common trap is assuming the beep means a dead motherboard or RAM. Remember that a single beep means the computer thinks everything is fine, so the problem must be with what you cannot see—the video output. Memory tip: “One beep, no peep” — the system beeps once but the screen stays dark, so check the graphics card’s seat.
220-1201 Core PC Hardware Troubleshooting Practice Question
This 220-1201 practice question tests your understanding of core pc hardware troubleshooting. 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 user reports that their PC emits a single short beep and then nothing happens. The screen remains blank, and the keyboard and mouse do not light up. What is the most likely 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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The graphics card is not fully inserted into the PCIe slot.
A single short beep typically indicates a successful POST on many BIOS versions. If the system beeps but then fails to display anything, the issue is likely with the video subsystem, such as a faulty graphics card or loose connection.
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 RAM is not seated properly.
Why it's wrong here
Incorrect; RAM issues usually produce multiple beeps (e.g., long continuous or repeating short beeps), not a single short beep.
✓
The graphics card is not fully inserted into the PCIe slot.
Why this is correct
Correct; a single short beep suggests POST passed, so the problem is likely with video output, and a loose graphics card is a common cause.
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 power supply is delivering insufficient power.
Why it's wrong here
Incorrect; insufficient power usually causes random shutdowns or no beeps at all, not a single beep followed by a blank screen.
✗
The motherboard CMOS battery is dead.
Why it's wrong here
Incorrect; a dead CMOS battery typically causes date/time resets or boot errors, but not a single beep with a blank screen.
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.
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.
Core PC Hardware Troubleshooting — This question tests Core PC Hardware Troubleshooting — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The graphics card is not fully inserted into the PCIe slot. — A single short beep typically indicates a successful POST on many BIOS versions. If the system beeps but then fails to display anything, the issue is likely with the video subsystem, such as a faulty graphics card or loose connection.
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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