After much frustration trying to get Kinivo BTH220 Stero Bluetooth headphones to work and much internet searching I learned that Windows 7 does not have A2DP drivers
. Through some forum on Bluetooth headphone installation problems I came across a reference to Bluetooth drivers released by HP. I downloaded the driver
and installed it while the Bluetooth USB device was installed and operational. When I added the Bluetooth headset device through the Bluetooth adapter panel the necessary drivers where installed and things worked as I expected. Do a Google search for the file "sp44774.exe." You need to locate a page with the title "Software Support for HP Integrated Module with Bluetooth Wireless Technology for Microsoft Windows 7;" download the file - it is about 59 MByte. After the installation you may need to restart the Windows Audio Services by executing the services.msc utility; this may require you to first stop the service and then start it.
My computer is a Dell Studio XPS 9000 with the i7-960 processor. The Bluetooth USB device is a Targus USB Bluetooth Adapter which shows up as a Broadcom 2046 Bluetooth 2.1 USB UHE Dangle with the Microsoft Bluetooth Enumerator in the device manager under Bluetooth Radios, and as two Bluetooth devices under Network adapters.
Please note the HP drivers are for Windows 7 (32 and 64 bit) only!