i'm using a pc with radeon hd4870. its connected to my main monitor via dvi and to a sony s360 receiver via hdmi (5.1 home theater system) which is connected to my tv(my secondary monitor). when i want sound out of the speakers i have to turn on both the receiver AND the tv. i used to be able to play sound out of the speakers without turning on the tv, but i dont know what had changed. can anyone help me out please? thanks!
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That sounds like it might have been a change on the receiver rather than on the computer itself.
i havent changed any settings on the receiver though. is it possible that a driver upgrade could have caused it?