Your answer was not an answer, was — and is — better suited as a comment and that is why I downvoted it.
I am the one who downvoted your answer and clearly told you so — and why — in a now deleted comment. I very clearly stated your answer was not an answer and reads more like a comment so you should have posted it as a comment instead of an answer. Here is the 100% exact comment I made verbatim thanks to Ramhound digging it up for his answer:
Your post was/is a comment because it was speculation. And the specs for the PC (PowerSpec G419) are easily accessible online and there is no indication that the PC in question has Bluetooth or a Wi-Fi card with Bluetooth mixed in.
This question as off-topic because it is all over the map and utterly unfocused What is the one question here? And your answer could — and still can — be helpful as a comment which you are fully capable of posting with the rep you have.
Instead of accepting that, you rambled on and on — as you are doing here — about your years of experience and how you are simply right and others are engaging in giving you: “Another drive by downvote for zero reason.”
I attempted to reason with you in the comments there — in the same way others here are attempting to reason with you — but no answer other than 100% submission to your “professional experience” seems to make you happy.
And as others point out, this is not the first time you have posted comments as answers and then get personally outraged if you are downvoted because of that.
So when I finally gave up and said something along the lines of “If you are unhappy with this, please post about it on meta…” which you clearly have done with this post, what is the title of your question?
“Wrongly downvoted answer”
How ridiculously vain and demanding and tone-deaf that “question” is. We all see our share of “Why was my question/answer downvoted?” posts. But to simply post a tone-deaf answer to a question on the main site, get upset and then just post this “Wrongly downvoted answer” post here is kind of past belief.
I want to respect your supposed years of experience in the computer field, but none of your posts actually reflect that past saying, “Trust me I have done this…” with utterly nothing else to back your posts up that are then followed up with angry indignation if someone even dare question your posts validity.
Look, posting a comment can often be as helpful as posting an answer if the initial question is vague. But in a case like this — where someone is asking about Bluetooth capabilities for a PC (PowerSpec G419) whose specs clearly indicate there is no Bluetooth — and you are rambling on and on about generic advice without paying attention to the core reality of this user’s machine, you will be downvoted by me and possibly others.
This is not personal, but again — and again and again — if you are going to endlessly post low quality answers that are better suited as comments as answers this is what happens.
You taking this stuff personally all the time actually reflects a true lack of experience in your professional skill set. So if you expect people to respect your professional experience, you need to behave in a way that garners that respect. Your current behavior makes me question your supposed professional experience at best.