Hello every body,
I'm agree with you, it is a realy good audio system and I had the same problem like you.
After lot of installation and unstallation of drivers, I tried every thing which was possible. I finally manage to make it work fine. I simply brutally unpluged the power supply of the speakers when all was on. I plug it again and switch on with the telecommand and all was working fine. I turn off the computer and restart, all is going fine. Don't ask me how what happen but it works ! Maybe an internal reset.
I hope it will work for you too.
Sorry for my approximative english ;-)
Wow dude, thank you so much!
It sounded too ridiculous to be true, but it worked! Even after reboot everything works fine just like before the update!
I bet Logitech and Microsoft wouldn't have come up with this solution, haha.
Guess you saved us all a lot of money!