Hardware Technics Windows

Dell Inspiron 17 3737: install Bluetooth device on Windows 7 (64-bit)

I have to admin that I have not tested the Bluetooth device with my former Windows 7 installations on the Inspirons 17 3737, so I thought that the WLAN problem was the only one – that was false conclusion. The problem with the Bluetooth device was, that smartphones or other notebooks could perhaps find the Dell Inspiron 17 3737 (or even could not find it!), but paring was impossible!