If you’re like me, you have a drawer full of older tech that just refuses to die. The TP-Link WN721N is one of those legendary USB Wi-Fi adapters. It’s small, surprisingly durable, and for years, it was the go-to solution for fixing a dead laptop Wi-Fi card.

But then comes Windows 10. You plug it in, Windows makes that little "connected" sound, but... nothing. No networks show up. The light on the adapter stays off.

So before you recycle that little green-and-white dongle, give this fix a try. It might just save you $15.