Hello there, I'm Gopal an Independent Advisor. I will try my best to help you.
Have you checked the Dell support website for drivers specifically designed for your desktop model? If not, I can guide you through the process.
Visit the Dell support website: https://www.dell.com/support/home/en-us
Enter your Dell desktop model number in the search bar.
Go to the "Drivers & Downloads" section for your specific model.
Locate the Bluetooth driver and download it.
Regards,
Gopal