A factory reset returns a router to its out-of-box configuration. It can recover access after a forgotten administrator password or repair a badly corrupted configuration, but it also removes settings that may be required for internet service.

Before pressing Reset

Record or export anything you may need: ISP PPPoE credentials, VLAN IDs, static WAN settings, custom DNS, Wi-Fi names/passwords, DHCP reservations, port forwards, VPN settings, parental controls, and mesh topology. ISP-supplied equipment may have provider-specific settings you cannot recreate from memory.

Use the manual for the exact model

Reset-button behavior varies. Many routers require holding a recessed button for roughly 10 seconds while powered on, but the LED sequence and duration are model-specific. Use the manufacturer instructions rather than assuming one timing applies to every device.

Wait for a complete reboot

Do not remove power while the reset is processing. When the device returns to factory state, connect using the label/setup card or manufacturer app.

Rebuild security first

Create a new administrator password, configure Wi-Fi security, and check for supported firmware updates. Restore only settings you still need. If the old configuration caused the problem, importing a full backup can also import the problem.

When not to reset?

A reset does not fix an ISP outage, damaged cable, failing optical signal, or dead power supply. Diagnose those conditions first.

Video walkthrough for How to Factory Reset a Router Safely and Set It Up Again?

Official ASUS reset demonstration. A factory reset erases configuration, so use it only after model-specific recovery checks.