Win 8.1 and Display Power Management NUC

Hi,

Overview:

NUC (D54250WYKH)  is connected via HDMI and all Drivers and Bios are up to date.

Running Windows 8.1 with all current fixes.

Error description:

After 10min (here the Windows "Power Management" for display start) , playing music files stops playing and some crashes.

I've tested this behavior with different Software like Mediaportal, JR MediaCenter and so on...

They through an error like "VolumeHandler  / Mixer exception" and an exception like a method call is invalid for the object's current state.

Workaround:

Increasing the start time of  "Power Management" solved this Problem.

It seems like an driver or Win 8.1 issue