If you had a Broadcom card, this would be easy. I would probably say to look in your BIOS for anything with Broadcom in the name. If you find it, make sure it's enabled. In your case, however, in theory, look for anything with TP-link in the name. If its there, make sure its enabled.
Also, like mikee here said, it could just be a physical switch. On most laptops that I've seen, they're on the front, sometimes above the speaker.