Originally posted by Kam
If you've tried different TVs and different cables, then it is definitely a setting on the laptop.
On the laptop, go to the bottom where you see the sound button in the task bar. Right click it and go to Playback Devices. Find the HDMI, it should say Realtek High Definition Audio and set it as the Default Device.
All that shows up is the speakers when the hdmi is plugged in
Edit: going onto the device properties:
"This device cannot start. (Code 10)
{Operation Failed}
The requested operation was unsuccessful"