How to find out what's keeping my system from hibernating?

Hi,

Everytime I try to put my desktop into hibernation, the harddisk
starts working, monitor shuts down, but then the system just hangs. It
doesn't turn off. How can I find out what device/driver/service etc.
is keeping my system from completing its hibernation?

Thanks..

I had to set my mouse and keyboard "not to wake the computer" in device
manager.

<> wrote in message
news:92ba7b2a-9015-405b-a72c-...
> Hi,
>
> Everytime I try to put my desktop into hibernation, the harddisk
> starts working, monitor shuts down, but then the system just hangs. It
> doesn't turn off. How can I find out what device/driver/service etc.
> is keeping my system from completing its hibernation?
>
> Thanks..