Thanks for joining the Intel communities.
I understand you are not getting any audio through HDMI connection.
The link below provides possible scenarios that may apply to your situation:
Also, this link could help identify the problem:
Please bear in mind, this support is only offered in English.
Thanks for the update.
Did you try any of the links provided on my previous post?
For desktop or laptop would be same troubleshooting.
If you did and the problem still remains, I recommend contacting your computer manufacturer for more assistance on this matter: Home - TOSHIBA FORUMS