Cooling fan noise

The cooling fan on my hp pavilion tower stops and starts at regular intervals, every 3/4 minutes, this is much more frequent than it used to do. I understand that components do get hot and need cooling, but this is gettig annoying.

Hi, once my fan to my laptop started to sound like a dishwashing machine, after I sprayed some libricant, WD40 etcetera,, it runs smooth again, maybe your fan is having to much friction that generates heat?

Hope this helps

/ Afo

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