This is the most common fix. If your Bluetooth dongle or internal card has outdated drivers, Windows 7 won't know how to handle a modern Bluetooth headset. Click and type Device Manager . Expand the Bluetooth Radios section.
The P47 wireless headphones are plug-and-play on modern systems, but Windows 7 requires your to be fully up to date. If you are using a USB Bluetooth dongle, visit the manufacturer’s website (like TP-Link, ASUS, or CSR) to download the specific Windows 7 driver package. p47 wireless headphones driver windows 7
Technically, there is no official "P47 brand" driver. These headphones use standard and Hands-free Profile protocols. This is the most common fix