Alright,

Everyone seems to know the error.

I actually found a few solutions in this thread. (Can't post links, search "The dreaded 'Video Error-File Not Installed' When trying to watch LiveTV in WMC")

Machine:

ASRock VisionX 321B

• Ivy Bridge Core i5-3210m
• AMD Radeon HD 78590m
• 8gb RAM
• Intel HM77 chipset
• Windows 8 64bit w/ Windows Pro Pack (for WMC)
• Silicondust HDHomerun Prime w/ latest firmware

System Configuration

Audio/Video over HDMI to Yamaha RX-671 to Samsung Plasma TV.  Audio configured for 7.1 surround sound.

The issue: When viewing any channel the video will appear with a few seconds of audio that will continuously loop until the Video Error File not installed displays.  Also if you go to Settings > Windows Media Center Setup > Speakers and select any option when testing the first sound will play, loop and then lock up until media center no longer pays any audio.

Solutions found:

Disable Exclusive control in Sound settings in windows.  This works, Live TV works as intended. HOWEVER, all audio passthrough is lost.  Meaning, no Digital sound is passed through to the receiver and it stays in PCM 2.0 in anything.  Live TV, Bluray, games, etc.

Keep Exclusive control in sound settings enabled, set speakers to stereo.  The windows desktop transmits 2.0 PCM to receiver, however, Bluray passes the correct bitstream (DTS, True DTS, etc), Live TV passes the correct Dolby Digital stream, Netflix passes the correct Dolby Digital stream.  All games, do not.  They only pass the configured windows speaker stream. IE, PCM 2.0. 

So the former option almost works. Except if I want to play a game, I have to switch my speaker setup back to 7.1. And then back to stereo before I watch TV.  The real culprit seems to be WMC.  Are there any real fixes for it? Does anyone know what actually causes the issue if more than stereo speakers are selected in the sound settings of windows?

Hi,

According to your description, it probably theres a conflict between how the Windows 8 HDMI drivers handle 7.1 and how Media Center handles sound.

You can check the Windows Update, if there is any updates relate with HDMI Audio Drivers, you can install it, then this problem will began.

Also you can go to ASRock official site to download the latest HDMI driver for test.

If still there is no use, you may need to contact your machine manufacture for further assistance.

In addition, because this problem relate with WMC, I would recommend you access the site below to ask the question for further help.

http://experts.windows.com/f/