I (HP G6) the fan jammed and since the axis on it was sealed tightly, there was nothing to do. Sent a fan of good design-if you pull (neatly and symmetrically) behind the propeller of the fan, it will be removed, as it is held simply by a magnet. Now the axis can be cleaned and lubricated. New, of course, already smeared. The seller is good, and even sent quickly!