Check whether your PC already has built-in Bluetooth
Open Device Manager and look for Bluetooth
If Bluetooth is missing, buy a USB Bluetooth adapter
Plug the Bluetooth adapter into an available USB port
Install the adapter driver if Windows does not do it automatically
Restart the PC if required
Open Windows Settings
Go to Bluetooth and devices
Turn Bluetooth on
Pair your Bluetooth device
If using a desktop with an internal card, install a PCIe Bluetooth/Wi-Fi card
Connect the card to the motherboard and antenna if required
Install the card drivers
Enable Bluetooth in Windows
Test the connection with a Bluetooth device