CompTIA
220-1201 · Question #81
A user reports that their desktop PC does not turn on. Which of the following components would most likely cause the issue?
The correct answer is A. PSU. If a desktop fails to power on entirely, the most probable cause is a faulty Power Supply Unit (PSU). If there are no lights, fans, or POST beeps, the PSU may have failed, cutting off all power to the motherboard and components.
Submitted by kev92· Mar 30, 2026Hardware and network troubleshooting
Question
A user reports that their desktop PC does not turn on. Which of the following components would most likely cause the issue?
Options
- APSU
- BGPU
- CRAM
- DCPU
How the community answered
(62 responses)- A74% (46)
- B3% (2)
- C8% (5)
- D15% (9)
Explanation
If a desktop fails to power on entirely, the most probable cause is a faulty Power Supply Unit (PSU). If there are no lights, fans, or POST beeps, the PSU may have failed, cutting off all power to the motherboard and components.
Topics
#PSU#power failure#desktop components#POST
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