For different reasons, my laptops have had the BlueTooth fail. What I finally ended up doing:
With my AV & AM set to leave the In Search Of alone, and, if you have your Windows Update function turned off, it must be ON during this In Search Of.
Uninstall all Bluetooth software that can be uninstalled via Control Panel --> Programs.
Then immediately went into Control Panel's Device Manager and uninstalled all the found Bluetooth adapters [I have two in there]. Then, I Restarted.
I left Windows 7 alone, I let it come to full Desktop and allowed Windows all on its own to search for and find the necessary Bluetooth drivers, after it checked all thingies with green checkmarks, I restarted again. After all of that: so far, my Bluetooth adapter remains fully usable.
I just reread your opening, your Bluetooth is a Dell-special, my ideas above may/may not work for you. If you know the exact specs of the built-in Bluetooth, you might be able to "bypass Dell software," download and install the Bluetooth manufacturer's software.
Edited by RolandJS, 19 July 2016 - 08:44 AM.
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