What mother board do you have?
I have an Abit AB9 Pro. When I would try to put my XP Home Premium into
sleep "Suspend to RAM" (STR), it would just restart.
In my BIOS I had to go to Power Management and under ACPI Suspend Type
disable "Resume by USB from S3".
Now my sleep works just fine. Maybe you can fine something in your BIOS such
as this that may correct your problem.
Good Luck,
Ed.
"Massimo Savazzi" <> wrote in message
news:7F98B077-F7B0-4598-B1E6-...
> Sigh!
>
> is there any tool - registry - log - key or whatever to have any hint of
> which hardware is preventing the sleep mode?
>
>
> I have too (I realy mean too) many things in the case to do an disconnect
> & try even because some of them are in realy nasty positions.
>
> The bios is the latest one 
>
> "Scissor" <> wrote in message
> news:...
>>
>> One of your peripherals, drivers, or software is preventing Vista from
>> going into sleep mode.
>>
>> Check for a BIOS update for your computer. Check for driver updates
>> for your motherboard, sound card, graphics card, etc.
>>
>> Try closing all open software, disconnecting any unnecessary devices
>> from your computer first (including external hard drives and USB memory
>> sticks), and then try sleep mode again. If it works then the problem is
>> with one of your devices or programs and you can narrow it down.
>>
>> Is your keyboard or mouse plugged into a USB hub? Try plugging them
>> directly into the back of your computer.
>>
>> If you do end up reinstalling Vista for another reason, try Sleep mode
>> after the first install to verify that it works with a fresh install.
>> Then you could try Sleep mode after installing each driver/software to
>> narrow down the problem.
>>
>> Good luck with your troubleshooting.
>>
>>
>> --
>> Scissor
>