Every guide filed under Guides, newest first.
Stop guessing between 10.0.0.1 and 192.168.1.1. Read the real gateway address off the device in your hand in about twenty seconds, on any operating system.
Factory sign-in details for the router brands people search for most, plus why the label on your own unit always overrides any published list.
Work through the diagnostic sequence in order — it resolves the overwhelming majority of failed router logins without a factory reset.
Open the troubleshooting guide