HOTSPOT A technician is diagnosing several device issues reported by employees. INSTRUCTIONS Click on each device to review the issue. Then select the appropriate issue and solution from the drop-down menu. Each option may be used more than once. https://kxbjsyuhceggsyvxdkof.supabase.co/storage/v1/object/public/file-images/CompTIA_220-1201/page_92_img_1.jpg https://kxbjsyuhceggsyvxdkof.supabase.co/storage/v1/object/public/file-images/CompTIA_220-1201/page_93_img_1.jpg

Yeah, it's all about the actual hardware issue for each device here. Swollen battery or overheating means replacement, post screen problems point to disabling overclocking, and no signal on monitor is usually wrong input selected. That matches what I'd expect from A+ stuff.

Nah, calibration won't fix the black screen if the laptop's battery is dead. The dropdowns want the root issue (like failed battery), not just a quick fix. Pretty sure it's replace the battery here since that's standard CompTIA troubleshooting.

Battery needs calibration for the laptop with the black screen.

Is it asking for the issue as it appears on-screen or the root cause only? That could flip some choices.

Question 20 - CompTIA A+ 220-1201 (Core 1) Real Exam Questions [March 2026 Update]

Q: 20

HOTSPOT A technician is diagnosing several device issues reported by employees. INSTRUCTIONS Click on each device to review the issue. Then select the appropriate issue and solution from the drop-down menu. Each option may be used more than once. CompTIA 220 1201 question

Your Answer

Correct Answer:

DEVICE 1 (PURPLE SMARTPHONE):

ISSUE: SWOLLEN BATTERY
SOLUTION: A REPLACEMENT IS REQUIRED

DEVICE 2 (LAPTOP WITH BLACK SCREEN):

ISSUE: BATTERY PERFORMANCE
SOLUTION: A REPLACEMENT IS REQUIRED

DEVICE 3 (LAPTOP WITH POST SCREEN):

ISSUE: OVERHEATING
SOLUTION: DISABLE OVERCLOCKING IN THE CPU

DEVICE 4 (LAPTOP WITH BOOT ERROR):

ISSUE: CANNOT LOCATE BOOT PARTITION
SOLUTION: ENTER THE BIOS AND CONFIGURE CHANGES

DEVICE 5 (SMARTPHONE WITH TEMPERATURE WARNING):

ISSUE: OVERHEATING
SOLUTION: A REPLACEMENT IS REQUIRED

DEVICE 6 (MONITOR WITH 'NO SIGNAL'):

ISSUE: WRONG INPUT SELECTED
SOLUTION: SWITCH THE DISPLAY INPUT

DEVICE 7 (PROJECTOR WITH LANDSCAPE IMAGE):

ISSUE: FUZZY IMAGE
SOLUTION: CLEAN THE LENS

DEVICE 8 (PROJECTOR WITH TRAPEZOIDAL IMAGE):

ISSUE: KEYSTONING
SOLUTION: ADJUST THE DISPLAY ANGLE SETTINGS

DEVICE 9 (MONITOR WITH AFTERIMAGE):

ISSUE: BURN-IN
SOLUTION: A REPLACEMENT IS REQUIRED

Explanation

The diagnoses are based on visual evidence and standard hardware troubleshooting procedures.

Swollen Battery & Overheating: A swollen battery indicates critical internal failure and is a safety hazard requiring immediate replacement. Similarly, a device that chronically overheats under normal conditions, as shown by the temperature warning, likely has a hardware fault necessitating replacement.
Boot & Performance Issues: The "Operating System not found" error points directly to a failure to locate the boot partition, which is typically resolved by correcting the boot order in the BIOS. System instability during startup (POST screen) is a common symptom of overheating caused by overclocking; disabling it can restore stability. A complete failure to power on (black screen) after ruling out charging issues points to a failed battery.
Display Artifacts: Each display issue has a distinct cause and solution. A "no signal" error is most commonly a Wrong input selected, fixed by cycling through the monitor's inputs. A Fuzzy image from a projector is often due to a dirty lens. Keystoning is a specific trapezoidal distortion corrected by adjusting the projector's angle settings. Finally, Burn-in is permanent pixel degradation, making replacement the only solution.

References

Swollen Battery: Hess, S., et al. (2013). "Lithium-Ion Battery Safety," IEEE Instrumentation & Measurement Magazine, 16(5), pp. 13-14. DOI: 10.1109/MIM.2013.6617424 (Discusses failure modes of Li-ion batteries, including swelling due to gas generation, which necessitates decommissioning the cell).

Overheating: Intel Corporation. (2022). "Overheating Symptoms and Troubleshooting for Intel® Boxed Processors." Document ID: 000005593. (States that overheating can cause system shutdowns or errors. While not mentioning POST specifically, it aligns with instability. Disabling performance tuning like overclocking is a recommended step).

Boot Partition Error: Microsoft Corporation. (2023). "Use Bootrec.exe in the Windows RE to troubleshoot startup issues." Microsoft Learn. (While detailing the bootrec tool, the documentation implicitly confirms that boot configuration, managed at a pre-OS level like the BIOS/UEFI, is the source of "operating system not found" errors).

Keystoning: S. K. Nayar, et al. (1995). "A non-metric calibration technique." Proceedings of IEEE Conference on Computer Vision and Pattern Recognition, pp. 343-344. DOI: 10.1109/CVPR.1995.466927. (Describes the geometric principles behind projective distortion, of which keystoning is a primary example, and how it is corrected by transforming the image plane).

Burn-in: Y. C. Chen, et al. (2006). "Image Sticking Model for a-Si and LTPS AMLCDs." Journal of the Society for Information Display, 14(9), pp. 803-810. DOI: https://doi.org/10.1889/1.2345189. (Explains the physical mechanisms of image sticking, or burn-in, as a result of prolonged stress on pixels, confirming its nature as permanent or semi-permanent degradation).

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