This fan that I bought 2-3 months ago and worked without a sound is now making a very loud sound (it is still working though).
It is so loud I can hear it outside my room, it has started today, so I turned off my pc and push the fan around with pressure, it seems the noise lower by a lot but you can still hear it, do I need to oil it or something?
More aboutstarted making buzzing noise
it happens, usually with cheaper fans.
Unless there's something sticking into the fan (like a stick in bicycle spokes), or you didn't secure the fan tightly to the heat sink (vibration) . . . all you can do is replace the fan.