wrote in message
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ABC wrote:
wrote in message
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My PC (Dell Precision 370, about 14 months old) is emitting a high
pitched tone; I'd say between 8 and 12 KHz but that is a guess; that
[...]


If it that much of a critical machine, then whatever software you are
running, it should be on a dedicated server, and not a standard Dell PC.


I work mostly from home, so it is critical to /me/. I suppose it could
be switched off for the eight or so hours that I sleep, but then I'm
not sure that I'm going to sleep for eight hours; anyway switching
computers off and on just gives me the creeps.

The only way to identify and rectify the problem is to open the box and
take
a look.

Yes, done; and as I suspected I could hear nothing. I think I'll have
to go with the stethoscope suggestion and a concerted attack on the
problem.

Sorted then - leave the side off :-)