220-1201 Hardware Practice Question
A technician is troubleshooting a desktop that fails to boot. The system powers on, but no video appears and the motherboard emits a repeating beep pattern. The technician suspects a RAM issue. Which of the following should the technician do FIRST to resolve the problem?
⚠ Common exam trap
The trap here is assuming that any boot failure requires replacing hardware, when often a simple reseat of components resolves the issue.
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
✓
Reseat the memory modules in their slots.
Beep codes during POST often indicate a memory problem. The first and simplest step is to reseat the RAM modules, which re-establishes proper contact and can resolve the issue without parts replacement. This approach is non-invasive and aligns with standard troubleshooting methodology: start with the easiest and most likely solution before escalating.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Replace the CMOS battery.
Why it's wrong here
A dead CMOS battery typically causes the system to lose date/time settings or BIOS configuration, but it does not usually cause beep codes or a no-video condition. Replacing the battery is a valid maintenance step, but it is not the first action for a beep-code boot failure. The technician should address the likely RAM contact issue first.
- ✓
Reseat the memory modules in their slots.
Why this is correct
Reseating the memory modules is the first step because beep codes often indicate poor contact between the RAM and the slot. Dust or slight movement can cause this. Reseating is quick, safe, and non-destructive, and it frequently resolves the issue without needing replacement parts. It also confirms whether the problem is physical connectivity before moving to more complex diagnostics.
- ✗
Update the BIOS to the latest version.
Why it's wrong here
Updating the BIOS is not appropriate when the system cannot boot or display video. BIOS updates require a stable boot environment and are risky if the system is unstable. The beep code indicates a hardware issue, not a firmware bug. Attempting a BIOS update could brick the motherboard if the process is interrupted.
- ✗
Replace the power supply with a higher-wattage unit.
Why it's wrong here
A higher-wattage power supply is unnecessary here because the system powers on, indicating the PSU is likely functioning. Beep codes specifically point to a hardware fault, often RAM, not insufficient power. Replacing the PSU would not address the beep pattern and wastes time and resources. The technician should first try simpler, targeted fixes.
Visual reference
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Related to this question
Learn chapter
RAM Types and Memory Slots
Key term
Power-on Self-test
The Power-on Self-test (POST) is a diagnostic process a computer runs immediately when you turn it on to check that essential hardware components are working correctly before loading the operating system.
Key term
Dual In-line Memory Module
A Dual In-line Memory Module (DIMM) is a small circuit board that holds memory chips and plugs into a computer's motherboard to provide Random Access Memory (RAM).
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
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