No control over heatsink fan

Lunacinense said:

OK, I've had my system up for over a month now. Just today when I turned the comp on, my heatsink fan is VERY loud. Granted I have the RPM knob cranked to max, but I've never heard my fan before. Now I'm wondering if I have any control over the fan at all. Although the sensor reads the RPM's rising and falling when I turn the knob, I don't think anything is happening. It's just this particular boot up I had full control over my heatsink fan, what gives?

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aja said:

So do you have full control or don't you? you state both.

Check for dust or hairs etc.

Go into the BIOS and check that the RPM's are indeed changing when you adjust the knob. Don't trust software

Maybe see if you can enable auto fan speed in the BIOS.

The bearings on the FAN might be clogged or failing.

Are you a smoker? smoke can clog up bearings in weeks...

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Mpegger said:

Could be dirt, but from one day sounding fine to the next making noise, sounds like bearings to me. Easiest fix is to just put a new fan in place and chuck that one. Of course, check for dust fur first.

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