Hi Caljr,
Welcome to the Microsoft Community. As per the problem description you are unable to install Bluetooth adapter. Provide the following information:
· Have you made any changes on the computer prior to the issue?
· Do you get any error message?
I will help you with this issue. I would suggest you to follow the steps from the article.
How to troubleshoot Bluetooth detection and connectivity problems in Windows XP Service Pack 2 (Applicable to Windows XP SP3)
Cannot install a Bluetooth device after you install Windows XP Service Pack 2 (Applicable to Windows XP SP3)
You may refer this article for more information.
How to install and configure Bluetooth devices in Windows XP Service Pack 2 (Applicable to Windows XP SP3)
Hope this helps. Let us know if you need further assistance with Windows.