220-1101 · Question #997
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. The Power Supply Unit (PSU) converts AC wall power into the DC voltages that every component in the PC requires. If the PSU fails or delivers insufficient power, the system receives no power at all and will not turn on-no fans, no POST, no display. A failed GPU, RAM, or CPU can c
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
(35 responses)- A89% (31)
- B3% (1)
- C3% (1)
- D6% (2)
Explanation
The Power Supply Unit (PSU) converts AC wall power into the DC voltages that every component in the PC requires. If the PSU fails or delivers insufficient power, the system receives no power at all and will not turn on-no fans, no POST, no display. A failed GPU, RAM, or CPU can cause boot failures or errors after power is applied, but the system would still show signs of receiving power (fans spinning, LEDs lit). A completely dead PSU is the most common single-point cause of a PC that shows no signs of life.
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