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

[farhanarain]

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..

 

[Lisa]

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