A user’s desktop computer slows down after a few minutes of use, and the fans alternate between silent and very loud. Which of the following is MOST likely failing, therefore causing these symptoms?
The most likely culprit for the described symptoms is C. Power supply.
A failing power supply unit (PSU) can exhibit various symptoms, including:
Performance degradation: Insufficient power can cause the system to slow down or freeze.
Fan noise: A failing PSU may cause the fans to work harder to cool the components, leading to increased noise.
Intermittent power issues: The PSU might not provide stable power, leading to unexpected shutdowns or restarts.
While other components like the CPU fan, memory, or hard drive can also cause performance issues, the combination of performance degradation and fluctuating fan noise strongly points to a power supply problem.
GG
While a failing CPU fan can cause performance issues and excessive noise, the symptoms described in the prompt are more indicative of a power supply issue.
Here's why a failing CPU fan is less likely to be the root cause:
Intermittent Performance Issues: A failing CPU fan would likely lead to consistent performance degradation and overheating issues, rather than intermittent slowdowns.
Fan Noise Pattern: The fluctuating fan noise, alternating between silent and loud, is more characteristic of a power supply issue where the fan is responding to varying power demands or instability.
Underlying Cause: A failing CPU fan is often a symptom of another issue, such as a clogged heatsink or thermal paste, rather than the primary cause of the problem.
Therefore, while a faulty CPU fan can't be entirely ruled out, the power supply is a more likely culprit based on the given symptoms.
GG
If the fans alternate between very loud and silent noise suggests that something is wrong with the CPU fans. Because of the fact that fans are not cooling the system properly, the temperature rises and slows down the performance of the system in that case. I think A is the correct answer.
I have, in 40 years in the IT business, never encountered an over rev'ing CPU fan that could be heard; even in an open casr. I have how ever witnessed CPWS fans running noisy and fast. Replacing the CPWS solved the problem. Therefore, inspite of the "official answer" I choose to replace it.
Based on the given symptoms, the most likely failing component is the CPU fan. The alternating fan noise suggests that the fan is not functioning properly, which can cause the CPU to overheat and slow down the computer's performance. If the CPU overheats, it may cause the computer to shut down or cause permanent damage to the hardware. It is important to address this issue as soon as possible to avoid further damage to the computer.
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