Troubleshooting Checklist

Start local

• Confirm Wi-Fi is connected or the Ethernet link lights are on
• Check that you have an IP address and a default gateway
• Ping the gateway (often 192.168.1.1 or similar)
• Try another device on the same network

Test beyond the LAN

Ping a known public IP such as 1.1.1.1. If an IP works but names fail, focus on DNS. If neither works, check the router, modem, or ISP path.

ping 1.1.1.1
ping example.com

Narrow the scope

If only one site fails, try another browser or device, or inspect DNS and HTTPS errors. If only Wi-Fi fails, try Ethernet. If only one PC fails, inspect its firewall, VPN, or proxy settings.

Capture what you learned

Note your IP, gateway, DNS servers, and whether ping/traceroute succeeded. That short record makes it much easier to ask for help or compare after a change.

# Linux
ip address
ip route

# Windows
ipconfig /all