Technical Question about Shutdown from XBMC

Hi,

I have a quick question: How exactly does XBMC execute the shutdown - meaning: Which method is used by XBMC to shutdown the OS, in this case Windows?

I ask because I have a weird problem:
When I shutdown my Win8 machine from the normal system shutdown menu, I am unable to wake the system up using either WOL or Keyboard/USB-Input.
However - if I shutdown via XBMC everything is working fine. I can wake my system up, just as expected.
On Win7 this behaviour is not visible - I can shutdown from the system and still be able to wake via WOL or Keyboard/USB-Input.

I suspect this has something to do with the "fastboot" of Windows 8 - when XBMC shuts Win8 down, does it utilize the fastboot component?


Thanks in advance!