For several years, I've been able to connect my PC to my TV using an HDMI cable and sharing the display. Sometimes I would have to select the default audio device, and sometimes Windows would seemingly detect it automatically. I have a Dell PC running Windows 7 Home Premium, 64 bit edition, and an LG HDTV.

I moved and had to disconnect/reconnect everything. The connections are the same as previously - I have one HDMI port on the back of the PC, with a cable running to a switch. The switch has 3 inputs, one being used for the PC connection, one for a Roku, and the other one free. The switch is then connected via HDMI to the TV. Same HDMI input as before.

I get video, but I can't get audio. In the Sound properties, I have two audio playback devices: Speakers and headphones. Both using Conexant HD audio. I've right-clicked and selected to show disconnected/disabled devices, but there are none. I've checked in Device Manager, and there are no hardware conflicts listed for the audio devices. I don't see HDMI listed anywhere in Device Manager, just the Conexant card under Sound and Audio Devices and HD Audio Controller under System Devices. 

I've scanned for new hardware, run an Intel driver update, restarted, unplugged the TV for 10 minutes and plugged back in, tried the HDMI connection directly to another input on the TV, played with making the TV the primary display. Nothing works. I'm thinking it must be something simple, as it was working beautifully up until I moved.

If anyone can help, I would greatly appreciate it.

Can you test your equipment with another devices? Chances are that there has something happened during moving your equipment.

Perhaps better forum for problems like this one is here answers.microsoft.com

M.