The card worked fine until after a Windows Update last year.I don't know which one it was.
When I went to the support page I only found ATI Radeon HD 4850 X2 drivers. I installed them and I when I attempt to stream to my TV by HDMI the image is great, but there is no sound.
Windows Troubleshooter didn't help. When I test the connection I receive an error message.I have attached a screen shot.
I have Windows 10 Pro 64 bit on a desktop PC
There are no drivers for that graphics card that support Win10 on the AMD site. Upgrading to a modern/compatible graphics card is less than $90
Windows® 10 Driver Support for Discrete AMD Radeon™ Graphics Products
The following Discrete AMD Radeon™ Graphics products support up to WDDM 1.1 and DirectX® 10.1:
These graphics products must be installed using display driver version: 8.970.100.9001. This driver is provided as a courtesy and only available via Windows Update. Please enable Windows Update and allow it to detect and install the appropriate driver.
NOTE: ATI Radeon™ HD 4000/ATI Mobility Radeon™ HD 4000, ATI Radeon™ HD 3000/ATI Mobility Radeon™ HD 3000, and ATI Radeon™ HD 2000/ATI Mobility Radeon™ HD 2000 Series Graphics reached peak performance optimization on October, 2013. No additional driver releases are planned for these products.
Thanks for the response.
This driver package works well with the video card:
Advanced Micro Devices, Inc
1/13/2015
8.970.100.9001
Unfortunately this driver is installed on the HDMI:
Microsoft
4/11/2018
10.0.17134.1
When Windows updated the driver the HDMI no longer transmitted audio.
I'll check on a late model video card.