ZBook 17 plays back no sound in Blackmagic Resolve

I have been battling with this problem for a while and the guys from Blackmagic Design gave up (after making sure all my settings in Resolve are ok and the software version supports system audio).
I colour grade with daVinci Resolve 11 (Lite) on the ZBook 17 using the system speakers. Only in Resolve the audio does not play back (other programmes are not affected). The VU meter moves so the audio is recognised, it is just not audible.
Is it possible that the IDT High Definition Audio codec is incompatible with Resolve? I have the latest driver installed. I have also the NVIDIA High Def Audio controller active but since I use no I/O devices I assume this is irrelevant. But to be sure I deactivated the codec and controller alternatively without result.
Is anyone familiar with this problem in Resolve?

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Any reply from a HP employee represents their own opinion and not that of HP's.
HP ZBook 17 Mobile Workstation is business class computer, your question may be better answered in the HP Enterprise Business Community. You may also consider contacting the HP Business Support Center to request assistance with your question.
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ZBook 17 plays back no sound in Blackmagic Resolve

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