i have a Defiance III
the Fan makes loud noise, i would like to change it. Do you know where to find the same one? I think it's the GPU fan, it's the single one.
Ref: fcn brushless motor dfs501105frot
Are you sure it's not making a loud noise because it's working hard and trying to cool an overheating laptop? If you've not cleaned it recently (or at all) I would try that first and see whether the fan runs less loud...