How do I factory reset a router, and when should I not?
The pinhole is not a restart. What a reset actually clears, the three situations where it is the right answer, the much larger number where it is not, and what to write down before you do it.
- Difficulty
- intermediate
- Time
- 40 min
- Read
- 6 min
- Safety
- caution
Short answer
Restart first — unplug for thirty seconds — because that fixes most of what people reset for and costs nothing. A genuine factory reset is right in only three situations: you have lost the router's admin password, the settings are so tangled you cannot untangle them, or you are passing the router on. Before pressing the pinhole, photograph the label, note your wifi name and password, and confirm you know how the router gets back onto your provider's line.
Two operations on a router are routinely confused because both are described as "resetting it". A restart cuts the power, clears the memory, and re-establishes the connection, keeping every setting. A factory reset returns the box to how it left the factory: default wifi name, default wifi password, default admin password, and every setting you or your provider ever changed, gone. The pinhole does the second, and it takes about ten seconds of a paperclip to create an evening's work. The distinction matters more in the UK than in some markets because provider-supplied routers often carry line credentials and telephone configuration that the box cannot always rebuild on its own.
Safety
Step by step
- Restart properly first and give it a fair test.Unplug at the mains, wait thirty seconds, plug back in, and leave it a full five minutes to resync. The catalogue's guide on restarting a router properly covers the order when there is a separate modem. A large majority of problems people reset for are solved here.
- Confirm you have a genuine reason to reset.The three real ones: you cannot get into the admin interface because the password was changed and is lost, the configuration is in a state you cannot reason about after repeated changes, or you are giving the router away or returning it. Slow wifi, a dropped connection and a device that will not join are not reasons.
- Photograph the label on the router.It carries the default wifi name, default wifi password and default admin password, all of which you will need in ten minutes. Photograph it now, because on some routers the label is on the underside and you will be reading it while everything is unplugged.
- Write down your current settings before wiping them.Your wifi name and password, any changed channel or band settings, any fixed addresses or port forwarding rules, and any devices you have given special treatment. Screenshots of the router's settings pages are the fastest way. Without this you are rebuilding from memory.
- Establish how the router reconnects to your line.On full fibre it usually reconnects automatically. On some copper and part-fibre services the router needs a username and password for the line, and on a provider box those are often pre-loaded and lost with a reset. Check your provider's help pages or call them before resetting — they can usually supply the details or push the configuration back.
- Check what happens to your telephone.On a digital voice service the phone plugs into the router and its configuration is part of the router's settings. A reset can leave the telephone service down until the provider reconfigures it, which matters a great deal if anyone in the house relies on the landline, including for a personal alarm.
- Do the reset itself.With the router powered on, press and hold the recessed pinhole button with a straightened paperclip for the time the manual specifies — usually ten to thirty seconds — until the lights change or all come on at once. Release and leave it alone for several minutes while it rebuilds and restarts.
- Rebuild deliberately, and reuse your old wifi name and password.Setting the wifi name and password back to exactly what they were before means every device in the house rejoins on its own, which turns an evening's work into ten minutes. This single step is the most valuable one in the whole guide. Then set a new admin password and store it in your password manager.
Common mistakes
- Pressing the pinhole because a restart did not help — It is the natural escalation and it is usually wrong. The pinhole clears configuration; if the problem was not configuration, you get the same fault plus an evening of rejoining devices.
- Resetting without noting the wifi name and password — Reusing the old name and password means every device rejoins automatically. Losing them means touching every device in the house individually, including the ones on a shelf with no screen.
- Resetting a provider router without checking how it reconnects — On some services the box comes back with no idea how to reach the line, and the household has no internet until the provider intervenes. That is a phone call you would rather make before the reset than after.
If it doesn't work
No internet after the reset
Cause: Line credentials or provider configuration lost — Fix: Contact the provider. Most can push the configuration back remotely in minutes, and many will do it on a chat. Do not keep resetting in the hope it fixes itself.
Wifi works, phone line does not
Cause: Digital voice configuration cleared — Fix: The provider reconfigures the voice service. If someone in the house depends on the phone, tell them that when you call, because it changes their priority.
Cannot get into the settings even after a reset
Cause: The wrong address, or the reset did not complete — Fix: Use the address on the label and the default admin password from the label. If it still refuses, hold the pinhole longer — some routers require a full thirty seconds and a short press does nothing.
Smart devices will not rejoin
Cause: The wifi name or password changed — Fix: Set the wifi name and password back to the previous values if you can. If not, each smart device has to be put back into pairing mode and reconfigured through its own app, which is the bulk of the work a reset creates.
The reset changed nothing
Cause: The fault was never in the router's settings — Fix: A reset only clears configuration. A line fault, a failing router, or interference are all untouched by it, and this outcome is the usual result of resetting for a symptom the reset could never address.
Router keeps resetting itself
Cause: Failing hardware or a power problem — Fix: A router that returns to defaults on its own is failing. Providers replace their own boxes; a bought router of that age is due for replacement.
Questions people ask
What is the difference between the pinhole and the WPS button?
The pinhole, recessed so it cannot be pressed by accident, is factory reset. WPS is a raised button that starts a short window in which a device can join without typing the password. Pressing WPS is harmless; pressing the pinhole is not, which is exactly why one is recessed.
Do I need to reset the router before returning it to my provider?
Yes, and it is the clearest legitimate use of the reset. It removes your wifi password, your admin password and any settings, which is a sensible thing to do to any networking equipment leaving your house.
Will a reset fix slow wifi?
Almost never. Slow wifi is distance, interference, band selection, the number of devices, or the broadband service itself, and none of those are settings that a reset clears. The catalogue has several guides on the actual causes.
Can I back up my router's settings first?
Many routers can export a configuration file, which is genuinely useful before deliberate experimentation. It is much less useful before a reset done because you have lost the admin password, since exporting requires being logged in — which is the thing you cannot do.