Server Doesn't Wake Up!

Hi,

I have recently installed lights out and while my Win 8 box sleeps I can only wake it up via the keyboard.

Using the client or trying to send a magic packet doesn't wake up the box.

WOL is enabled so not sure why it isn't working! I don't believe this is a hardware issue as the box woke without issue when I had it configured as a Linux box.

Any ideas?

Thanks,

Alex.