Press the Windows Key + R , type devmgmt.msc , and press Enter to open Device Manager .
To make the P47 headphones work, you must identify your computer's Bluetooth hardware manufacturer and download the software from their official repository. For Intel Bluetooth Chips p47 wireless headphones driver windows 7 link
This completely bypasses the need for any Bluetooth drivers, software configurations, or battery power. Deploy Third-Party Bluetooth Stacks Press the Windows Key + R , type devmgmt