Noise with MN-520 wireless notebook adapter

Hi,
My MN-520 runs with a noise that corresponds with the
rhythm of the signal (judging by the blinking light). The
noise comes from speakers but can't be turned off when I
turn-off the volume. It sounds like an electronic
interference. Does any body know what that might be?
Many thanks

Weiyi

Cheap laptop.

Weiyi Su wrote:

> Hi,
> My MN-520 runs with a noise that corresponds with the
> rhythm of the signal (judging by the blinking light). The
> noise comes from speakers but can't be turned off when I
> turn-off the volume. It sounds like an electronic
> interference. Does any body know what that might be?
> Many thanks
>
> Weiyi