I have the same problem when I connect my headset to Windows 8. What I usually do is right-click the sound icon by the clock and make sure it is showing up as ready and the default playback device. If I have my media player open and it is playing a song or a podcast from the Internet I have to click pause and then click the play button again before it will come through the Bluetooth headset. On my MacBook and my Windows 7 laptop I don't seem to have this problem, it just seems to occur on Windows 8. You might have to stop the program you are listening to and restart it before it will send the sound through to your headset.
Hope this helps
answered 1 year, 5 months ago
I've had the same issue and posted the solution in my review, this is the same problem as other questions, so I'm copying my response.
Many dongles have trouble with various headset. The reason is the transmitted device name (the dongle).
The solution: in control panel, open Device Manager, under Bluetooth, find your dongle, right-click and open properties, go on the advance tab and rename the device using all lower case letters only (no hyphen, special characters or numbers) (ex. bluetooth). click ok until you are back to the device manager, then disable the device (right click and select), give it 5 seconds, and enable the device again. Then try connecting (add new device) the the headset (with the headset in discoverable mode), and it should work.