What driver should I install for Bluetooth connectivity on my HP Pavilion DM4 with Windows 7?
Since the HP laptops vary from one model to another, simply visit the official support website and select the correct version of Windows 7 installed in your laptop. It should be 32 or 64 bit then you can download the drivers. Scroll down to the Driver - Network and install Broadcom or Qualcomm drivers. One of those should work.