20+ practice questions focused on Core PC Hardware Troubleshooting — one of the most tested topics on the CompTIA A+ Core 1 220-1201 exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Core PC Hardware Troubleshooting PracticeA technician is troubleshooting a PC that boots to a black screen with a blinking cursor after the BIOS screen. The system has a single SSD with the OS installed. The BIOS detects the SSD. What is the most likely cause?
Explanation: A black screen with a blinking cursor after POST indicates the BIOS found a bootable device but cannot locate the bootloader. This is often due to a corrupted Master Boot Record (MBR) or GUID Partition Table (GPT). The technician should boot from installation media and use the Startup Repair or bootrec commands to rebuild the bootloader.
A user reports that their PC randomly restarts during boot-up, sometimes before the Windows logo appears. They have already tried reseating the RAM. Which component should be tested next?
Explanation: Random restarts during early boot, especially before the OS loads, often point to a failing power supply. The PSU may not be providing stable voltages under the initial power draw of the system. Using a multimeter to test voltage outputs or swapping with a known-good PSU is the next step.
A technician is deploying a new SSD in a desktop PC. After installing the drive and connecting the SATA data and power cables, the system does not recognize the drive in the BIOS. All other drives are detected. What should the technician check first?
Explanation: When a new drive is not detected, the most common cause is a loose or improper connection. The technician should reseat both the SATA data cable at the drive and motherboard, and the power cable from the PSU. If that fails, testing the drive in another port or with another cable is the next step.
A user reports that their PC emits a continuous series of short beeps and will not display anything on the screen. The system was working fine after a recent RAM upgrade. What is the most likely cause of this issue?
Explanation: Continuous short beeps typically indicate a power supply failure or a motherboard power issue. However, given the recent RAM upgrade, it is more likely that the new RAM is incompatible or not seated correctly. The technician should first reseat the RAM and try the original modules to isolate the problem.
A client brings in a desktop that will not power on. The technician verifies the power cord is connected and the PSU fan does not spin when the power button is pressed. What is the most appropriate next step?
Explanation: When the PSU fan does not spin, the power supply may be dead. The quickest and safest test is to use a power supply tester or perform the paperclip test to see if the PSU turns on. If it does not, replacement is needed. Always eliminate the PSU as the cause before checking other components.
+15 more Core PC Hardware Troubleshooting questions available
Practice all Core PC Hardware Troubleshooting questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Core PC Hardware Troubleshooting. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
Core PC Hardware Troubleshooting questions on the 220-1201 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. Core PC Hardware Troubleshooting is tested as part of the CompTIA A+ Core 1 220-1201 blueprint. Practicing with targeted Core PC Hardware Troubleshooting questions ensures you can handle any format or difficulty that appears.
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Difficulty is subjective, but Core PC Hardware Troubleshooting is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
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