Assuming you have downloaded the generic Broadcom driver package, follow these steps exactly.
Do not run an installer. Extract the ZIP folder to a location like C:\Drivers\EPOX_BT . epox bt-dg07a bluetooth usb adapter driver
If the device shows an error (yellow exclamation mark), use the Windows Device Manager Assuming you have downloaded the generic Broadcom driver
Microsoft removed native support for legacy Bluetooth 1.2 dongles starting with Windows 8.1 and later. The inbox drivers (btusb.inf) are designed for Bluetooth 4.0 and above. Consequently, Windows will not automatically install drivers for the BT-DG07A. epox bt-dg07a bluetooth usb adapter driver