Thanks for replies. Will have a look inside pc tower tomorrow and perhaps try some felt washers and
hard sponge/polystyrene sheet under the tower. Have just turned PC on, noise still there until I removed
it from computer desk and stood it on the floor carpet, which silenced it! Resonance appear's to be a
large part of the problem.
It's not so much the noise I am concerned about, more the cause. If the hdd should pack up I would lose
everything on it. The pc has been running silently for two years and this problem just started a few days
ago. Is the hdd likely to: carry on working for some time yet, or pack up suddenly. (probably no answer to this question).
It is the hard drive, I held pencil to it.
is