Hey,
I have an external hard drive that sounds like a blender because its fan hums and gurgles. I thought simply replacing the fan would be the answer, but when I took the fan away from the casing it was spinning quietly. I than thought it was something obstructing it, but I have inspected it my self and it flows freely when it is out of its case. Than I but a couple of rubber bands between the fan and the casing thinking that the rubber would absorb the vibrations. But that still doesn't work.
Here is what it sounds like.
http://www.rhodewarrior.org/noise.mp3
Can anybody help me?