Laptop noise

Since I intalled Windows Vista Business 64-Bits in my Acer Aspire 5630-6091 I
can hear a strange noise (I think from processor). The laptop config is an
Intel Core-2-Duo with 1Gb RAM.
With Windows XP I didn't have this problem. This is my second laptop with
this problem and with the same behavior: only in normal use of Windows.
The most stange is when I start Windows Vista in secure mode: the noise stops.
In my point of view, this is a problem with drivers of Windows Vista.

When I'm in a quite place this noise is horrible.
Please, any idea of how can I solve this problem without removing Windows
Vista and changing it to Windows XP????

Please don't multipost.

"Saulo" <Saulo@discussions.microsoft.com> wrote in message
news:425202C3-95F7-4244-AE1F-03A90B37C0D3@microsoft.com...
> Since I intalled Windows Vista Business 64-Bits in my Acer Aspire
> 5630-6091 I
> can hear a strange noise (I think from processor). The laptop config is an
> Intel Core-2-Duo with 1Gb RAM.
> With Windows XP I didn't have this problem. This is my second laptop with
> this problem and with the same behavior: only in normal use of Windows.
> The most stange is when I start Windows Vista in secure mode: the noise
> stops.
> In my point of view, this is a problem with drivers of Windows Vista.
>
> When I'm in a quite place this noise is horrible.
> Please, any idea of how can I solve this problem without removing Windows
> Vista and changing it to Windows XP????