@CHMYST - I've been, and still am, having similar challenges with the Bluetooth stopping working. I kept have to uninstall the device from the Bluetooth screen on my Windows 7 PC and then re-add the device - and even then, it didn't always work. I didn't know if it was the Sync that had the problem or the Windows 7 PC, so I set up the Bluetooth to work with my Nexus 5 smart phone. That configuration worked well (consistently). So it was the Windows 7 PC that had the issue. Since then, I installed the updated (v3?) Bluetooth on my Windows 7 PC and things have been better, but not perfect like when I'm connected to my phone via Bluetooth. Hope this gives you some help.