Réponse à : « Fan next to 1 TB HDD making lot of noise. How to disconnect the fan? »Another option to replacing the fan is to remove the fan, clean it well, check that the motor is ok and to gently lift the plastic fan blades from the spindle, put a small drop of oil on the spindle, replace the blades. It is likely that the fan is attached to the heat sink, so you need to clean the heat sink, including where it contacts the CPU and GPU. Apply fresh thermal paste, replace the heat sink and power on the laptop. Watch the temperatures to verify that temperatures are within normal ranges. I have replaced my fan three times, and only recently found that it can be fixed without replacement.