Installed the second 'Cumulative Update' today and still no change.- Please fix it already, Microsoft! Thanks for the video, it helps to see things like that.

I've made a short clip to illustrate the problem - from what I've read, it's the same most of you are experiencing. However, AC3 - 5.1-Surround via Optical Out still works just fine - my Receiver does get the DD 5.1 / DTS 5.1 Signal. My Realtek Chip features DDL instead of DTS Connect and produces the same problem (no test sound can be played). Hi everyone, I just wanted to add (since most of this thread has centered on DTS Connect) that Dolby Digital Live doesn't work either. I know it's a pain, but could you try downgrading the audio driver from 7571 to 7535 or 7541? I haven't seen 7571 personally and I wonder if a bug crept into the newer driver. Deleted the screen captures to save a little space.:-) I'm worried about the fact that it doesn't work over an analog connection - That should be fully functional. Many drivers will leave ghost behind when will (not if) cause havoc to a system. BTW, when updating drivers, completely remove previous drivers and that includes any ghost drivers that may remain after uninstalling.

Let me know if you need an internal config sheet of drivers. This does not occur with Windows 8.1 Pro 圆4. When attempting to use 7.1, with the side speakers disabled/enabled produce the same results. However, all indicators such as each speaker, the green arrow is focused meaning that the configuration is correctly set to produce sound from each speaker. If running the test on optical, message is 'Error Failed to play test tone.' If attempting to use analog, nothing is heard across any of the speakers.

However, when attempting to go beyond any signal of 2 channel, the audio fails. I know that the audio system is functioning correctly since I am able to run an internal test and each speaker runs a tone test and can be heard clearly. I understand about the Optical driver being repaired, but the analog should work with 5.1, but does not. It is true John, no sound when attempting to use analog signal for 5.1.

Dolby digital live and dts connect pack