Windows 7 Default sound device and blu ray playback

[ush1]

Couple of issues I'm having with Windows 7 if anyone can shed some light;

Every time I restart my pc my default audio playback device reverts to the hdmi output of my 4870 card, I change it, restart, same story.

When I play a blu ray disc through powerdvd, Windows 7 reverts to windows basic scheme, why would that be and would it effect the picture quality?

Thanks lads!

 

[Tepid]

PowerDVD may not have the ability to use Windows Aero, if that is the case, Windows will revert to basic mode to allow the app to work.

The other problem, sounds like a driver issue. Probably need to reinstall the video drivers, or wait for them to mature.