Network Troubleshooting for Beginners: Fix Your Internet Step-by-Step
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Stuck with “no internet” and mystery network errors? In this final episode of the Networking Fundamentals series, Daniel Lowrie walks you through real-world network troubleshooting—from checking physical connections and bad cables to failing NICs and disabled adapters in Windows.
Learn how to verify link lights, use Control Panel to manage network adapters, and run essential commands like ping, ip, ifconfig, and ipconfig to test connectivity. We cover DHCP release/renew, APIPA issues, subnet masks, DNS misconfigurations, flushing DNS cache, rebooting routers/services, and even using netsh and Winsock reset to repair broken TCP/IP stacks. By the end, you’ll have a practical checklist to diagnose and fix common home and small office network problems.
chapters
00:00 - Intro - 017 Network Fundamentals - Troubleshooting
00:40 - Checking Physical Connections
03:15 - Checking Wi-Fi configuration
04:28 - Troubleshooting on Windows PC
06:06 - Windows Command Line
07:46 - Troubleshooting from Linux
10:16 - Checking IP Addresses
15:07 - APIPA Address
20:09 - Subnet Mask
21:44 - Gateway
23:02 - DNS
27:01 - winsock reset
27:47 - systemctl restart network manager
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