Audio will not transmit to TV via Displayport

Please read carefully as I have spent 8 hours on this issue and if you have a simple answer, I have probably already tried it. I want to explain the problem in full detail and get some real tech experts to help. Thank you!! The first thing you need to know about the Lenovo Thinkcentre 6234-A111 is that there is no HDMI output. There is a displayport output. Therefore, I bought this adapter: http://www.walmart.com/ip/V7-DisplayPort-to-HDMI-Adapter/29530877 I then ran an HDMI cable to HDMI 1 on my TV. The picture transmits. The audio does not. I have already tried the following common "solution:" 1. Right click audio icon2. select playback devices3. Right click in blank area to make sure that disconnected and disabled devices are showing After performing these steps, there should appear a TV icon called HDMI audio. You should then be able to set this as the default. The problem is that this TV icon does not appear. There is also no option for HDMI audio in the device manager. I have determined that the thinkcentre refuses to recognize that my TV has speakers. It only recognizes my TV as a monitor, which shows up as "generic PnP monitor" under device manager. Please tell me how I can force my computer to recognize the audio device attached via HMDI cable via displayport adapter. Thank you for your help! I am desperate. If this does not work it means time & money wasted.

I am adding to this thread to hopefully help others with the same issue. I found the exact model (M58P) and type (6234) of my PC here: http://support.lenovo.com/us/en/products/desktops-and-all-in-ones/thinkcentre-m-series-desktops/thinkcentre-m58p/documents/PD000963?tabName=ProductParts. The type of computer (in this case, 6234) is incredibly important because it tells you whether you require an NVIDIA graphics driver, or an AMD Radeon Graphics Driver. In this case, my PC runs on an ATI Radeon HD3470 256M PCIe Graphcis card. This type requires a graphics driver for the HD 3000 series. After much browsing, I found it: http://support.amd.com/en-us/download/desktop/legacy?product=legacy2&os=Windows%207%20-%2032. From what I can tell, my PC does not currently have a Radeon Driver, which is completely bewildering. Windows 7 is supposed to do this stuff for me automatically. Somehow the Intel Chipset is running my integrated graphics card, but not allowing audio through the displayport. I am not home, but I am very excited to try out this Radeon driver tonight. Does anyone know if this can run side-by-side with the Intel G43-G45 chipset (under display adapters in device manager), or will I need to uninstall that chipset before I can run this Radeon Driver?

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