Hard Drive Noise

[Jonathan Hutchins]

On Monday 19 November 2007 22:10:25 Jim Herrmann wrote:

> My wife's desktop is making an odd rhythmic sound that sounds like a
> quiet chain saw revving over and over again.

That's typically a thermostatically controlled fan.  You may be able to fix it 
by cleaning the area around the temperature sensor, which may or may not be 
in the fan, or you may need to replace the fan/sensor assembly.