Remote Mac WiFi Repair Needed

My spare MacBook has suddenly stopped seeing any wireless networks, even though the other computer on the same desk is happily online. I’m on macOS and, so far, the affected machine can’t detect a single network—home, hotspot, or neighbour—so it’s not just my router.

What I need from you is a real-time remote session (Zoom, TeamViewer, or your preferred secure tool) to:
• diagnose why the Wi-Fi interface is blind
• walk me through any Terminal commands, SMC/PRAM resets, or network-interface reinstalls required
• verify that the Mac can once again scan, join, and hold a stable connection

I’ll stay on the working computer throughout our session for screen sharing and chat, and I can reboot the faulty Mac as many times as needed. When we’re done, please send me a brief recap of the steps we performed so I have them for future reference.

If you’re confident with macOS networking quirks and can guide me to a solid fix today, let’s get started.