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Sender:
Personal Computer Hardware discussion List <[log in to unmask]>
Date:
Wed, 20 Sep 2006 00:11:04 -0700
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Personal Computer Hardware discussion List <[log in to unmask]>
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Subject:
Re: Friends PC has a problem
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From:
David Gillett <[log in to unmask]>
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On 18 Sep 2006 at 20:26, Dave Schroeder wrote:

> "After my PC has been on a few minutes, the humming is so loud I hear
> it several rooms away.  Then it revs up like it's going to take off,
> then backs down.  I know that's not right.  " 

  Hard drives and fans generally run at a constant speed, and so their noise 
tends to be constant too.  This "rev up" sounds like what some machines I've 
worked with do in order to determine what CD/DVD (or, occasionally, floppy) 
is in a drive.

David Gillett

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