Dear @Eric
I did like you proposed, uninstalling Light-out, and restoring all the default power managements setting.
And putting computer in sleep mode manually, this morning, exactly same problem, Auralic was not detected until I started to move the mouse from the computer.
And @Rugby, I was the author of other thread, And if you look my 2 last comments, problem was not really coming from Light-out, but more from how much time computer was remaining in sleep mode.
And like you can see between the 2 thread, I formated all the computer and replaced WHS2011 by Win10, but same issue at the end unfortunately
I know that all this looks very strange, but it’s really annoying to the use
-David