PSU Fan Becomes Noisy when Starting PC

Asked By 30 points N/A Posted on -
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I am having some issues when starting my computer. The PSU fan becomes very noisy. This happens randomly and when it happens, I will just unplug my PSU and then plug it back again. I don't have any issues on my PSU before. Also, there are times that when I turned my PC on, I will need to press the power button twice before it actually turn on. Is this an issue with my PSU or do I need to worry more on possible issues?

 

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Best Answer by Jed Calpable
Answered By 0 points N/A #189596

PSU Fan Becomes Noisy when Starting PC

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Hello,

It seems to me that your PSU got dirty. Please check it that is it got dirty or not. If it is dirty clean it, make sure clean it only with no smooth cloth not with water. Clean it properly. After that if the fan makes noise, theirs might be some problem with the PSU.

Best Answer
Best Answer
Answered By 0 points N/A #189595

PSU Fan Becomes Noisy when Starting PC

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This problem does not necessarily mean that your PSU is faulty. There are other factors that can make the PSU fan noisy, aside from defects. The most common factor is dirt and the positioning of the fan to the rest of the PSU. If it gets too close, it will make noises. The same holds true if it is dirty. If the layer of dirt is too thick, the fan may drag it when it spins, causing the noises. As for the power button not registering the boot-up on the first press is primarily due to the switch not being able to toggle the actual button. 

This happens the carbon content of the button is chipped or has diminished due to age. This would also explain why sometimes, it registers the press, and sometimes not. It is also possible that the spring-loaded mechanism might have been jammed from the inside, causing the inside switch to be stuck while toggling. The best way to find out is to first test a substitute PSU, and see happens. Also take note of the noises made, if it is buzzing, etc. (like the sound of sparks when plugging electrical appliances).

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