I have a new Dell Precision 5510. I suspect that one of the things that may have been causing me problems getting my QC35s to work with W7 Enterprise (in addition to the general problems that others have been having with W7) was the image that my employer puts on our machines. I went to the recommended Intel download center and downloaded what looked like the appropriate Bluetooth driver for my OS. I noted that there was no previous version of such a driver to uninstall from my machine. I installed the driver, and the OS began communicating with the headphones (finally, after hours of staring at an icon of headphones in the Bluetooth environment that made it look like everything was set up correctly). The install created a funky looking icon for the QC35s in the Bluetooth environment, but I don't really care about that, and I expect that it can be changed. So, thank you for your post Charlie_82VT!
Why do these big companies (like Intel, Microsoft and DELL) make it so difficult to find the answers to problems many of their customers are having?