A user says a site will not load, and several possible causes appear at once: Wi-Fi, an IP address, DNS, routing, or the service itself. Rather than treating every symptom as a separate mystery, work upward through the connection in a consistent order. The goal is to find the first layer that does not behave as expected.
Confirm The Local Link
Start with the basics: is the cable seated, is the wireless client associated with the expected network, and does the switch show a link? A connected link does not prove that the network is configured correctly, but a missing link is a clear reason to pause before investigating DNS or an application. Check the client’s address and subnet next.
Test The Gateway Path
Use the default gateway as the first network destination to check. If the client cannot reach it, investigate the local VLAN, address assignment, subnet mask, and gateway configuration. If it can reach the gateway but not a known remote IP address, the next checks belong farther along the routed path.
Separate Names From Addresses
A hostname depends on DNS to resolve to an address, so test name resolution separately from basic IP connectivity. If a known destination address responds but its hostname does not resolve, look at the configured DNS servers and the query result before changing routes. Keep in mind that a service may block ping, so a failed ping alone does not prove that the destination is unreachable.
Change One Thing At A Time
Record what worked, what failed, and which address or hostname you tested. Make one change, then repeat the same check so the result has a clear meaning. This method may feel slower than trying several fixes at once, but it gives you a result you can explain and a useful trail if the problem returns.