After researching this Bluetooth issue further, I learned that Dell did not necessarily install the Bluetooth module on all E6420 laptops. I didn't see the option shown on the online build sheet (hard to believe they didn't have Bluetooth by default). I obtained the hardware via ebay and installed it (not plug-n-play nor for the computer hardware challenged, but possible if you're willing to take your laptop apart). Afterwards, the Bluetooth then worked fine as it should. Again, why would Dell not make this Bluetooth standard rather than trying to saving a couple of cents and cause such a headache for users?
How to activate the bluetooth on Dell Latitude e6420
How to activate the bluetooth on Dell Latitude e6420