Showing results for 
Search instead for 
Did you mean: 
Level 3
28 17 3 0
Message 1 of 2
Flag Post


Elitebook 8440P no sound via HDMI / Display port

HP Recommended
Microsoft Windows 10 (64-bit)

HP8440P Win 10 NVIDIA NVS 3100M display card. Picture but no sound to TV via HDMI


Device manager shows HD Audio Device (MS 4/9/19 10.0.18362.356) and 4xNvidia HD Audio devices (14/11/2016

In thread
Lucas aka XyZnyc suggested installing the drivers i sp47020.exe
This containes NVIDIA driver english version
But the audio drivers will not install. Even if I tell Device Manager to update from the HD Audio directory it says best drivers already installed


If I uninstall the HD Audio Device and try to install SP47020.exe the screen flashes (so I presume the graphics drivers are installed) but the NVIDIA HD audio has the same version number and date (so presumably never got installed) and the HD Audio device is still missing and the sound does not work. I also lost the ability to duplicate the laptop screen on the remote TV


So I uninstalled the graphics device. Rebooted and video works fine (PC and TV)
A new sound device has appeared (Toshiba TV-1 excellent its a Toshia TV) but its greyed out and listed as not plugged in)


So any ideas as to what I might try next?


Level 3
28 17 3 0
Message 2 of 2
Flag Post
HP Recommended

So the answer for me was to use the Vista graphics drivers from the 8440p support page

Its the NVIDIA NVS 3100M Vista x64 307.83 driver and downloads as sp61073

Select advanced so you can do a 'clean install'

Good Luck

0 Kudos
Warning Be alert for scammers posting fake support phone numbers and/or email addresses on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation