A PC is powering on but the only activity a technician can see is spinning fans. Which of the following components would MOST likely be at fault for such a condition? (Select TWO).

The correct answer is B. CPU C. Memory. When a PC powers on (fans spin) but fails to POST or display anything, the most likely culprits are the CPU or RAM. These two components are essential for the system to complete Power-On Self-Test (POST). A failed or improperly seated CPU prevents any processing from starting…

Hardware and network troubleshooting

Question

Options

ASATA controller
BCPU
CMemory
DHard drive
ESound card

How the community answered

(37 responses)

A
5% (2)
B
78% (29)
D
14% (5)
E
3% (1)

Explanation

When a PC powers on (fans spin) but fails to POST or display anything, the most likely culprits are the CPU or RAM. These two components are essential for the system to complete Power-On Self-Test (POST). A failed or improperly seated CPU prevents any processing from starting. Faulty or unseated RAM causes POST failure and often triggers beep codes. A failed SATA controller or hard drive would still allow the system to POST (just fail to boot the OS), and a failed sound card would not prevent POST at all.

Topics

#POST failure#CPU failure#memory failure#hardware diagnostic

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