I use my PC as the basis of a Home Theatre with all my TV, DVD watching being projected via HDMI cable and audio via Sony amp. I'm running Windows 7 Home Premium 64 bit and have just upgraded my TV card to a TBS6280 DVB T/T2 Freeview HD Twin Tuner Card. Yesterday my TV region completed the Digital Swtichover and so I can now receive BBC HD, BBC1 HD, ITV1 HD and 4HD.
All has gone fine after a re-scan but I have one weird problem. If I open WMC and then select BBC HD from the channel guide it opens OK and with audio. If, on the other hand, I choose another channel first and then switch to BBC HD the volume (on BBC HD only) stops (but the muted volume icon does not appear).
I have searched around for solutions and have tried the following, all without success:-
1. deselecting "Exclusive Mode" on the Advanced tab of my "Speakers' Properties" from the Sound section of the Control Panel.
2. configuring the speakers back to Stero (currently, I run 7:1)
3. selecting "languages" when watching BBC HD on WMC and trying either of the "English" options (in fact this might be a clue and might help because, when the audio is OK (because I have selected this channel first) but then try to select an alternative "language", the volume/audio stops and won't return, even if I switch back to "language" that was selected originally.
I hope my explanation is clear enough for someone to be able to resolve this problem. My soundcard is Creative SoundBlaster X-Fi Xtreme Audio 7.1 Soundcard PCI-Express.
I wondered if it could be down to signal strength but that wouldn't account for it being OK if I go to BBC HD first. Incidentally the problem also occurs on BBC1 HD, although infrequently, and very rarely on ITV1 HD.
I am also getting slight flickering on all the HD channels as well. I've tried updating my nVidia driver
(GeForce GTX 260) but that created stuttering!
Oh dear, this is not going as smoothly as I'd hoped.
Many thanks in advance.