When you install Windows XP SP2, Bluetooth wireless device support is automatically installed.
If a Bluetooth wireless device or radio is detected, Device Manager will install the driver for the Bluetooth device.
To remove Bluetooth wireless device support:
1. Start / Run / Devmgmt.msc / OK.
2. Expand Bluetooth Radios.
3. Right-click each device and press Uninstall and OK.
4. Close Device Manager.
5. Open a CMD.EXE window.
6. Type the following commands, pressing Enter after each line:
CD /D %SystemRoot%\Inf
rename Bth.inf Bth.oldinf
rename Bth.pnf Bth.oldpnf
7. Shutdown and restart your computer.
NOTE: This procedure only prevents the Microsoft Bluetooth Stack from loading, but 3rd party Bluetooth stacks can be installed and loaded.