In message ,
writes:
Thanks all for responses.

It happens every time, after being off for a time, like over night.

My "Go" is the press of the start button.

I've checked out the 2 fans thorughly, and all is smooth, tight and
seems right.

The sound is hard to pinpoint 'cause it's so short and only happens
once a day, but seems central to the PC and I'm suspecting it might be
through the speaker, if there is one.

That should be easy - unplug it and see if sound goes away (-:. If there
is one - set something that continuously (or at least repetitively)
sounds through it, to help you find it.

This has been an ongoing thing for some time now, but I've always
wondered about it, and occasionally put out out a feeler.

In case it's just fans running at full, try to find a task that makes
the processor work hard, ideally in short bursts, and see if it sounds
similar.
--
J. P. Gilliver. UMRA: 1960/1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf

Q. How much is 2 + 2?
A. Thank you so much for asking your question.
Are you still having this problem? I'll be delighted to help you. Please
restate the problem twice and include your Windows version along with
all error logs.
- Mayayana in alt.windows7.general, 2018-11-1