From: jellybean stonerfish on
On Thu, 03 Jun 2010 10:39:32 -0500, Kevin the Drummer wrote:

> I wondered if I might be able to get at some fan controls via the BIOS,
> and booted into that screen. I found another clue, the whirring is
> exactly in time with the system clock, whirring just as each second on
> the clock ticks by.
> The hard drives seem quiet enough, and not the source of whirring. The
> case fans are quiet enough that I have to strain to hear them with my
> ear right by them. My video card is fan-less. My power supply isn't
> making the whirring sounds.
> What am I dealing with here? Do I have a motherboard that causes this?
> Are the Zalman fans that I love in all my other systems being upset by
> the Tyan motherboard? What else can I do to troubleshoot this? My next
> random attempt, half in panic, would be to swap motherboards again.
> Thanks all.....

Put a straw in your ear and point it around in the case until you figure
out where the sound is coming from.

From: Trevor Hemsley on
On Thu, 3 Jun 2010 22:40:39 UTC in comp.os.linux.hardware, Kevin the Drummer
<nobody(a)> wrote:

> bosco <boscopelone(a)> wrote:
> > I am guessing you are hearing the cpu fan. You can verify by using an
> > old paper towel cardboard tube. Use it as a directional hearing device
> > with one of your case panels off. You should be able to locate the
> > source easily. gl
> Excellent. I'll try that. Thanks!

I wonder if you are hearing ACPI controlling the fan, adjusting the speed. No
idea if there's a way to control how it does that but it might be an avenue to

Trevor Hemsley, Brighton, UK
Trevor dot Hemsley at ntlworld dot com