Hello support team and users
I buy a D54250WYK and connect this to my Yamaha receiver input with a hdmi cable.
The output from my Yamaha receiver is connect with hdmi to my Sony television 52Z5500.
I have no sound on my Yamaha receiver **** i have only sound on the Sony television and monitor.
Under Windows 8.1 I have only a stereo output and no HD sound.
Before my D54250WYK its work perfect with a Apple tv.
I have the last bios and drivers on the NUC.
I have see many problems with this configuration. 
How can I use this product as a HTPC without a good working HD audio??
There is no optical output for audio that make a solution!!
Is there a solution for this problem???
Best regards
SEAT1951