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220-1201 Practice Question: During a routine hardware upgrade, a technician…
During a routine hardware upgrade, a technician installs a new CPU into a workstation. After powering on, the system emits a series of long beeps and the screen remains blank. What is the most likely cause?
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 RAM is not seated properly
POST beep codes are used to indicate hardware errors. A series of long beeps typically points to a memory issue, not a CPU problem. The technician should reseat the RAM modules to resolve this.
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 compatible with the motherboard socket
Why it's wrong here
An incompatible CPU, especially one with a different socket type, would physically prevent proper installation or cause damage if forced. If the CPU fits but is electrically incompatible with the motherboard's chipset, the system would likely fail to power on entirely, display no video, or produce a specific CPU-related POST beep code (often a series of short beeps or a unique pattern depending on the BIOS manufacturer), rather than the long beeps indicative of RAM issues.
- ✗
The CPU is installed backwards
Why it's wrong here
Modern CPUs are designed with specific keying mechanisms, such as notches or pin configurations, to prevent incorrect installation. Attempting to install a CPU backwards would either physically prevent it from seating correctly without significant force, potentially bending pins on a PGA CPU or damaging the socket pins on an LGA motherboard. In such a scenario, the system would almost certainly fail to power on at all, or experience a critical hardware failure, rather than generating any POST beep codes.
- ✓
The RAM is not seated properly
Why this is correct
During the Power-On Self-Test (POST), the BIOS performs essential hardware checks, including memory initialization. If the RAM modules are not fully seated in their DIMM slots, or if they are faulty, the system's BIOS will typically generate a specific beep code to alert the user. A continuous series of long beeps, or a pattern like one long and two short beeps (depending on the BIOS manufacturer), is a very common and direct indicator of a memory subsystem error, such as improperly seated RAM.
- ✗
The CPU fan is not connected to the motherboard
Why it's wrong here
Most modern motherboards incorporate a CPU fan detection mechanism. If the CPU fan is not connected to its designated header, the system's BIOS will typically issue a warning, which might be a single short beep, a specific error message displayed on the screen (if video output is functional), or it might even prevent the system from booting further to protect the CPU from overheating. However, this particular issue does not typically manifest as a continuous series of long beeps, which are almost universally associated with memory initialization failures.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.