To connect wireless Bluetooth headphones to a desktop computer, you can follow these steps:

1. Turn on the Bluetooth feature on your desktop computer. This can usually be done through the settings or control panel.
2. Put your Bluetooth headphones into pairing mode. This process varies depending on the headphones, so refer to the user nual for instructions.
3. Once in pairing mode, your headphones should appear in the list of available Bluetooth devices on your computer.
4. Select your headphones from the list and click on "Connect" or "Pair".
5. Follow any additional on-screen instructions to complete the pairing process.
6. Once connected, you should be able to listen to audio from your desktop computer through your Bluetooth headphones.

If you encounter any issues during the pairing process, ke sure that your headphones are charged and within range of your computer.