Error 1005F-

Hi, I need some help ASAP.

all of the sudden, my MacBook Air stopped connecting with Wi-Fi. The Wi-Fi simply didn’t work… and my iPhone and IPad were working perfectly with the Wi-Fi. I tried to run the Wi-Fi diagnostic option, but it also didn’t work.

Then I had the idea of clearing the computer and reinstall my macOS, from zero. It didn’t find also any backup, since the computer couldn’t access internet.

but the MacBook still can’t connect with internet, and now it appears to me the message support.apple.com/mac/startup-1005F.

I have checked on apple page and bought a USB adapter for the internet cable to try to make the MacBook work again, but it also doesn’t work. Does anybody have an idea of what is causing this?

the MacBook was perfect. The day before was working perfectly and the next day, the connection simply stopped. Now I don’t know what to do…