B85M-ITX no HDMI audio

[bgt]

Hello,
I have 2 off B85M-ITX boards with no HDMI audio output.
When I connect my Iiyama XB2483HSU monitor to the board it will give audio on the DVI outputs but not on the HDMI outputs. Please help.
OS win 8.1 64bit/SSD/4Gb ram Bios = 1.90(latest)

[bgt]

Re: B85M-ITX no HDMI audio

These ones I own have the same problem:
H81M-HDS
H81M-ITX
Z87M Extr. 4