The noise does not appear to be related to the internet. However, the noise
does disappear momentarily while the CPU 'thinks' (e.g. opens a
program/window). It is a sharp, 'electric' sort of noise.

"ncpsyche" wrote:

> I just bought a XPS 1210 laptop with Vista... When online, there is a
> constant buzz (not the fan). The buzz stops momentarily when clicking from
> one site to another. When using headphones and mic, the buzz continues from
> the CPU but not through the headset...
>
> Any thoughts?