Laptop won't connect to WiFi but everything else does — what to check

Start with the basics: airplane mode off, WiFi toggle actually on, and forget or reconnect to the network to clear a stale saved password. If it's one specific network that fails while others work fine, check the laptop's WiFi adapter driver is up to date and that the network isn't on a 5GHz-only band the adapter doesn't support well.

Coach's tip: a quick restart fixes more WiFi problems than any other single step — always try it before deeper troubleshooting.