Are you sure it is the wifi card? If you plan on no longer using that laptop because the wifi is broken, it might be worth re-installing the operating system to have a clean slate. Perhaps something else is interfering with the connection. Worth a try at least!
We had done that before when my youngest brother (whom has just started college last week) made the idiotic decision to upgrade that thing to Windows 10, which was a big mistake, and after a year, we downgraded back to 8.1. Then again, he's better at computers than I am. As far as he's concerned, the card is replaceable, but is it worth it? The left mouse button is broken, one of the USB ports is broken, and the touchscreen kept malfunctioning so I disabled the touchscreen driver. To be honest, that laptop is four years old, and it's clearly run its course. Even its physical condition has deteriorated. Putting even the slightest pressure may cause a failure.
I don't sound very optimistic, but I'm just speaking my opinion. I hate that these computers just can't seem to last as long as I want them to. Wouldn't it be great if someone invented a way to make computers, TVs or game consoles last a lifetime? In our dreams. At least, this one lasted longer than that crappy Dell I had previously. That one only lasted two years, and it wasn't even brand new. It had been refurbished by my mom's cousin.
So, as far as my brother's concerned, the card has been fried (burned out).
Thanks for at least trying to help, Mumbling, and talking to you, in particular, reminds me that I still need to get my microphone installed on the newer laptop!