I have Windows XP Media Center Edition 2005 on my dell laptop and the device worked nicely. So after upgrading to Windows 7 my RR speaker emits sounds that are supposed to come from the subwoofer. By contrast, the subwoofer sounds that are supposed to through the speaker RR. I also noticed that the speaker properties dialog shows wrong color shots in the section data Jack. Sub C should be orange and RL RR must be black. On the other hand, in this dialogue of the Subcommittee C is black and making RL RR is orange. So if you guys have any suggestion on the same so please help me.