- A
The CPU is not seated properly
Why wrong: An improperly seated CPU would typically cause the system to not power on or to immediately shut down to prevent damage, not just display a blank screen.
- B
The motherboard BIOS needs an update
A BIOS update is often required to support newer CPU models, even if the socket is physically compatible; without it, the system may power on but not post.
- C
The RAM is incompatible with the new CPU
Why wrong: While RAM compatibility can cause boot issues, it is less likely than a BIOS mismatch when the CPU is newly installed and the system powers on but shows no display.
- D
The power supply is insufficient
Why wrong: An insufficient power supply usually causes random shutdowns or failure to power on, not a blank screen with fans running.
Why Does My System Show a Blank Screen After CPU Upgrade?
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 client wants to upgrade their desktop PC with a new, faster processor. They have purchased a CPU that is listed as compatible with the motherboard's socket type. After installation, the system powers on but displays a blank screen. 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.
Quick Answer
The answer is that the motherboard BIOS needs an update. Even when a new CPU physically fits the socket, the system’s firmware must contain the microcode required to recognize and initialize the processor; without that update, the motherboard cannot complete the Power-On Self-Test (POST), resulting in a blank screen despite fans spinning and lights turning on. This scenario directly tests your understanding of firmware compatibility versus physical compatibility, a common trap on the CompTIA A+ Core 1 220-1201 exam where many students assume socket fit guarantees functionality. The exam often presents this as a troubleshooting step: if you see a “CPU upgrade blank screen,” always verify the BIOS version against the CPU support list before swapping hardware. A useful memory tip is “Socket fits, but BIOS quits”—meaning physical match doesn’t guarantee boot, so check the firmware first.
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 BIOS needs an update
Even if the CPU fits the socket, the motherboard's BIOS/UEFI may require an update to support a newer CPU model. This is a common scenario where the hardware is physically compatible but the firmware is outdated. The system powers on but fails to post because the BIOS does not recognize the CPU.
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 not seated properly
Why it's wrong here
An improperly seated CPU would typically cause the system to not power on or to immediately shut down to prevent damage, not just display a blank screen.
- ✓
The motherboard BIOS needs an update
Why this is correct
A BIOS update is often required to support newer CPU models, even if the socket is physically compatible; without it, the system may power on but not post.
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 RAM is incompatible with the new CPU
Why it's wrong here
While RAM compatibility can cause boot issues, it is less likely than a BIOS mismatch when the CPU is newly installed and the system powers on but shows no display.
- ✗
The power supply is insufficient
Why it's wrong here
An insufficient power supply usually causes random shutdowns or failure to power on, not a blank screen with fans running.
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
Command / output trap
While RAM compatibility can cause boot issues, it is less likely than a BIOS mismatch when the CPU is newly installed and the system powers on but shows no display.
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.
- →
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 BIOS needs an update — Even if the CPU fits the socket, the motherboard's BIOS/UEFI may require an update to support a newer CPU model. This is a common scenario where the hardware is physically compatible but the firmware is outdated. The system powers on but fails to post because the BIOS does not recognize the CPU.
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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