Hard drive (or maybe fan) sounds like jet turbine

I have an HP Compaq xw3100 workstation, see it at:

http://h20000.www2.hp.com/bizsupport/TechSupport/Home.jsp?locale=en_US&prodTypeId=12454&prodSeriesId=346790

OS: XP Professional

Everything works fine EXCEPT, as the demands on the CPU increase (as viewed in the Windows Task Manager, Performance tab) the machine starts to sound like a jet engine reving up for takeoff.  It gets so loud my kids won't use the machine.

I have a nearly identical machine that does not do this.

Not certain if the sound comes from the hard drive or the fan, but I'd guess the hard drive.  

Any thoughts on how to quiet it down?

AlphaSquaredAsked:
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felnyCommented:
That is a cable that touch the fan cooler. Please open the cover and move the cable.
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AlphaSquaredAuthor Commented:
Not a wire, but the sound does come from the fan.
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SysExpertCommented:
Replace the fan, since as it gets older the bearings could be shot.


I hope this helps !
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AlphaSquaredAuthor Commented:
SysExpert, The fan sits above the heat sink for the CPU.  Dust clogged the heat sink.  I guess the fan had to work very hard to try to cool the CPU.  I blew out the dust and that solved the problem.  Thanks for pointing me in the right direction.
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SysExpertCommented:
Glad you got this resolved !
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Radiomedic21Commented:
This is an addition to the about solution.  As for the clogged fins on the heat shield that causes the gease to dry out.  If you clean the old processor gease off and apply new it helps greatly.  This simple solution solved multiple PC's within our department without replacing each fan.
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