Why does Windows 10 show WiFi as 'Not Available'?

[Windows Central Question]

I opened up my laptop this morning and found this problem. WiFi has worked before under windows 10, and the suggested solution that I found online of deleting a certain registry key through command prompt yields 'Error: Invalid key name Type "ERROR DELETE / ?" for usage. ' I opened my Device manager, and it doesn't list the wireless card at all. What can I do?