Thanks for that. The reason I asked is my computer seems to be getting noisier by the day (even the wife is complaining) Have cleaned inside the case,hoovered it but does not seem to make a difference. It is 4 years old. Am downloading that program now. Cheers.
Very likely to be the bearing in a fan (possibly PSU fan) after 4 years of work. Especially as PC manufacturers are not known for fitting the best quality components outside of the glamorous bits like graphics cards etc.
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