If you want, provide the exact product name or a screenshot of the listing (or confirm whether the device is built-in or a USB dongle), and I’ll locate the most likely official Windows 7 driver link and give direct install files and steps.
Windows 7 (with extended support) still has a driver catalog. Go to , right-click your Bluetooth adapter (it may show as an unknown device), and select Troubleshoot . Often, Windows will fetch the driver automatically. If you want, provide the exact product name