Gusf,
I assume you want to do this to restart a service or clear out the memory on the windows host? The problem is depending on what the failure is the LTM might not have access to the windows box.
I would have some sort of script (probably powershell) on the windows host that monitors the status of a service/memory/etc... and when that passes a certain threshold then you can reboot the box or have it issue a command to restart the service. This would also down the node in the LTM if you have proper monitors in place.
Hope this information helps and if not please let us know and give us a few more details on what you are wanting to reboot the device for so we will know what is potentially available on the device to use.
Regards,
Seth