On 19/03/2019 09:11, micky wrote:

It turns out to install the bluetooth in my laptop, I have to remove the
the led bezel, the palm rest, the keyboard AND the LCD screen

I'm not saying that this is untrue, because presumably you've researched
it, but I am surprised, as I've never had to go through all that to
install or change a Bluetooth module in a Dell laptop ...

Dell Latitude 610: Remove the battery and a cover on the inside of the
battery compartment, connect the module to the connector there, slide it
into the holder within the compartment, replace cover, replace battery.
5 minute job.

Dell Precision M4300: Remove LED cover with penknife or similar flat
blade, module is now accessible. 5 minute job.

Dell Precision M6300:
Dell Inspiron 15RSE 7520: Procedure unknown, because both came with
Bluetooth out of the box, and, so far, neither module has failed.