Start with what's going wrong.
Your game lags, a call freezes, or a website refuses to load. Where do you start? Pick the problem below. Each guide walks you through useful checks and one change to try, with explanations of what the readings can tell you. You can get started without running our connection check.
Pick your symptom
Real troubleshooting reports
See what troubleshooting looks like on a real PC, including the checks that left us scratching our heads.
Which Wi-Fi network should I use from this room? Three Wi-Fi networks, one PC, and a choice to make.
How the guides work
Start where the problem happens. Open your game's network panel, the call's health statistics, or Windows' connection details. Then try one change, such as pausing an upload or plugging in an Ethernet cable. Still unclear? Run our connection check before and after the change, using the same profile on the same device. Save both links and a note about what you changed.
Before you ask for help
Give support something they can follow up on. For example, "Download was about 200 Mbps. Response time went from 20 ms idle to 180 ms during an upload, and Ethernet looked the same." Each guide explains which readings to save. The glossary explains each term.
Use an AI agent on your PC
If you use a local AI coding agent, the internet-diagnostics skill can run the Windows checks for you and explain each result. Review every command before you approve it. See AI skills for internet troubleshooting.
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