I had a month ago a problem with my fan of the Notebook L1310G. The fan had a noise and i couldn´t resolve the problem. Soo i opened the back of the notebook, i cleaned the fan with a vacuum cleaner but the noise was less ... Last week i had one idea, i opened the back and with a 1mm screw-driver i raised the fan.
The noise didin't appeared and ... i think the problem of the noise was the fan was out off the correct position. And resolved ...