I suppose theres the possibility that something on the sidebar could be
using more processor and the fans are cutting in? You could run the
performance tab on task manager to see if theres a cpu spike when you hear
the noise or not as the case may be.
It could also be nothing to do with the pc its just that when sat in your
usual spot you hear the sound? I say this because I thought my hard drive
was playing up as I was getting a sort of grating sound just at the edge of
my hearing. I eventually realised it wasnt the laptop and the sound was
coming from near the kitchen hearth, to the side of where I sit.
Its an old cottage and we recycle, and there was an empty cereal packet
waiting to be made into eco logs. It turned out there was a " slug" !!
inside the packet "grazing" on old crumbs and the packet was acting like a
drum box and amplifying the sound.

)
"Lilith" <> wrote in message
news:7C7991BB-30E7-49E7-BED2-...
> Tried that already. It's not one of those. A glitch, probably. The sound
> is
> similar to TV static, but it only lasts about half a second to a second or
> so. The duration can vary a bit, and it's not always there even when the
> sidebar is open, just about... I don't know, 80% of the time?
>
>
> "Spikey" wrote:
>
>> Not sure what you are hearing. Some laptop speakers distort the sound
>> quite
>> badly.
>>
>> Go to Start - Settings - Control Panel - Sound.
>>
>> On the Sounds tab. Work your way down the sounds with the speaker sign,
>> click on them and then the test button. See if you can identify which one
>> it
>> is, then set it to "None" in the sounds window.
>>
>>
>> "Lilith" <> wrote in message
>> news:5EE7AF44-1338-4C20-B0E8-...
>> >I often get this short hissing noise when I either
>> > open/close/minimize/maximize a window or pass the cursor over the
>> > sidebar.
>> >
>> > As far as I can tell, this only happens when the sidebar is activated.
>> >
>> > Any suggestions as to how I can get rid of this sound without having to
>> > close the sidebar?
>>
>>