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Noctua NH L9i buzzing/grinding noise

post #1 of 2
Thread Starter 
Hey guys,

Today my CPU heatsink started making loud weird noises. I cleaned all the dust out of the fan and aired out the whole case but that didn't work. I have a fan controller and it's definitely the heatsink fan when I shut it off the noise goes away. Not sure what the problem could be thanks! Also it is not any cables it wires touching the fan.
post #2 of 2
you can try adding a drop of oil to the fan if that doesn't help then its time for a new fan.
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