I had the same problem for months. I finally solved it. There can be several reasons why you are not able to use your Bose qc35 headphones on Windows 7. I have personal experience with two cases:
First Case (simplest): You have not yet enabled your system to use the headphones
Solution: You can search the community on more details on how to fix this, but briefly...
- Go to Devices and Printers
- Right click the Bose qc35 icon (assuming you paired it successfully)
- click on "services"
- Enable "Listen to Music" . There should be a green checkmark once this is complete.
- Try playing music. If it works, you are done.
If not you may need to go to control panel, hardware and sound, manage audio devices (under sound tab), click on headset and
set it as the default device.
Second Case: Bose qc35 paired successfully but clicking on "services" from the step above does not open a new window, in other words, the services are unavailable.
Solution:
For me, this was because of a problem with the Bluetooth driver on my laptop.
- First, try to repair the Bluetooth driver/software
- Go to control panel
- Uninstall a program
- Find the Bluetooth driver/software from the list (Mine was Intel Wireless Bluetooth)
- Click on it
- Click "repair
- You may have to restart after this step. Try playing music. May have to follow instruction under the first case above.
If it still does not work
- Or, try searching online and installing the latest version of your Bluetooth driver software
Note: I was tipped by another post on the forum. Do look online for the latest version. The windows device manager is not always accurate at troubleshooting this problem. I hope this helps.
reference: https://answers.microsoft.com/en-us/windows/forum/windows\_vista-hardware/bluetooth-services-not-listed/0ea873cc-c7ff-4884-bb6c-2cafb0eda32b