- Check if issue affects one device or multiple devices
- Identify whether problem is with local network or internet
- Note error messages (No Internet, Limited Access, DNS error)
¶ Step 2: Check Physical and Basic Settings
- Ensure Ethernet cable is connected properly
- Verify Wi-Fi is turned ON and connected to correct network
- Restart computer and networking devices (router/modem)
- Run
ipconfig
- Confirm system has a valid IP address
- IP starting with 169.254.x.x indicates DHCP failure
- Check default gateway and DNS entries
ping 127.0.0.1 → Tests TCP/IP stackping <gateway> → Tests local networkping 8.8.8.8 → Tests internet connectivityping google.com → Tests DNS resolution
¶ Step 5: Check DNS and Network Cache
- Clear DNS cache using
ipconfig /flushdns
- Renew IP address using:
ipconfig /releaseipconfig /renew
¶ Step 6: Review Firewall, VPN, and Proxy
- Temporarily disable VPN and test connectivity
- Check proxy settings are not misconfigured
- Ensure firewall is not blocking required traffic
¶ Step 7: Adapter and Driver Checks
- Disable and re-enable network adapter
- Update or reinstall network drivers
- Check adapter status in Device Manager
- Run Network Troubleshooter
- Use
tracert to trace network path
- Check router logs or ISP status
- Test with another network or hotspot
- Use wired connection for stability
- Keep system and drivers updated
- Avoid conflicting VPN or proxy configurations
- Document recurring issues for faster resolution