Thank you for contacting Plugable support about your Bluetooth adapter. I’m sorry to hear you are having troubles Installing the Bluetooth software. There are several different issues that can cause the error you are seeing. I’d like to ask a question, then ask you to try a simple solution that often solves this issue.
First of all, have you ever used any other bluetooth device on this computer? Bluetooth devices will only work with one stack (set) of software. If some parts of an older installation are still on your computer, that can cause problems.
Second, could you try the following procedure? It often solves this issue.
1, Run Windows update with the dongle plugged in, and install any critical or important updates. Install any optional updates related to Bluetooth.
Could you try plugging the adapter into a different port? Bluetooth is pretty sensitive to interference, and sometimes another device in the computer, such as a Wifi adapter, can cause the dongle to fail if it is plugged into a nearby port.
Please download the stack file directly from Broadcom, at this URL if you haven’t already:
Before installing, please right-click on the icon for the .exe file, select Properties, click the Compatibility tab, put a check in the box that says “Run this program in compatibility mode for” and set Windows XP (Service Pack 3). Click OK, then right-click again, and select “Run as administrator.” Click Yes in the User Account Control box that is displayed.
This often allows the installation to complete on a Windows 7 machine.
Thank you very much. Please let me know how it goes.