I have a wire lose right beside my memory stick here is a pictures of it some reason it wouldn't let me post in my last post https://ibb.co/bASjKe
https://ibb.co/ketDCz
That black wire is going to your wireless antenna I believe, the ones I have seen snap on to the card (the wires snap on) and it's a bit weird to deal with them. Normally there were 2 wires, one black one white, but those were on All-in-one machines, laptops are probably different.