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What to do if…
your router resets unexpectedly and all your connected devices lose internet at once

Produced and maintained by PanicStation.org Published: Last reviewed: Editorial policy UK guide

Short answer

Treat it as either a broadband provider outage or a router reboot/reset. Do one calm power-cycle, then check your provider’s service status or broadband troubleshooter before changing any settings.

Do not do these things

  • Don’t press the tiny pinhole “RESET” button unless you intend a factory reset; it can wipe your Wi-Fi name, password, and settings.
  • Don’t power the router on and off repeatedly in quick succession; it can delay reconnection and make fault-finding harder.
  • Don’t change multiple router settings to “try things”; you can lock yourself out or lose track of what helped.
  • Don’t share a new Wi-Fi password in a rush until you know whether the router actually reverted to its default details.
  • Don’t assume landline, telecare, alarm, or smart-home devices are working if they depend on your broadband.

What to do now

  1. Check for immediate safety knock-on risks. If you rely on internet for a landline, telecare device, alarm, doorbell, camera, or smart lock, assume it may be offline. Use a mobile phone as your call backup, tell others in the home, and if someone may be at immediate risk use a mobile or neighbour’s phone to call 999.
  2. Look at what the router is doing right now. If the lights are changing and it looks like it is still booting or connecting, give it a few minutes before touching anything.
  3. Do one clean power-cycle, not a factory reset.
    • Turn the router off or unplug its power.
    • Wait about a minute, unless your provider’s instructions say to wait longer.
    • Power it back on and let it fully boot before testing again.
    • If you have a separate modem or ONT plus a router, power off both, power on the modem or ONT first, wait until it looks stable, then power on the router.
  4. Check whether it is a provider issue before changing anything. In your broadband provider’s app or website, look for “service status”, “outage”, “check status”, or “broadband troubleshooter”. If an outage is shown, stop troubleshooting and note roughly when it started.
  5. Check whether the router appears to have factory-reset. Clues include:
    • Your usual Wi-Fi network name, also called the SSID, has vanished or changed.
    • Your Wi-Fi password no longer works.
    • The visible network name or password now matches the default details printed on the router sticker.
  6. If Wi-Fi returns but there is still “no internet”, test one device by cable if you can. Plug a laptop or PC into the router with an Ethernet cable. If wired also has no internet, the problem is more likely to be the router-to-provider link or a provider-side issue, not just Wi-Fi.
  7. If it is still down, report the fault through your provider’s support route. Tell them when it started, whether it looked like a reboot or reset, whether the Wi-Fi name changed, and what the router lights are doing now. Ask them to run line or connection checks and confirm whether your router or modem shows as connected from their side.
  8. Use a temporary fallback only for essentials. Use mobile data or a phone hotspot for urgent messages, work access, care arrangements, banking access, or travel plans. Avoid changing router admin settings while the home connection is unstable.

What can wait

  • You do not need to decide now whether to replace the router, change provider, or reconfigure your whole network.
  • You do not need to rename Wi-Fi, change channels, or reset passwords while you are still checking whether this is an outage or a local fault.
  • You can postpone firmware checks, admin-page changes, and deeper troubleshooting until after you have checked service status and reported the fault if needed.

Important reassurance

A sudden “everything dropped at once” event is often a provider outage, a normal equipment reboot, or a router update. A single calm power-cycle plus a service-status check helps you avoid making the situation worse.

Scope note

These are first steps to stabilise the moment, check whether the problem is local or provider-side, and avoid irreversible changes. If it repeats, you may need provider diagnostics, a router replacement, or specialist network help later.

Important note

This is general information, not provider-specific, technical, legal, medical, financial, therapeutic, or professional advice. If you depend on connectivity for safety, care devices, alarms, or an internet-based landline, treat any broadband loss as time-sensitive and contact your provider promptly once you have a working phone route.

Additional Resources

Closely connected guides that may be useful during the same situation or its immediate aftermath.

About this guide

This guide was produced and is maintained by PanicStation.org using its published editorial process. Official and specialist sources are checked where relevant, and AI-assisted tools may be used for drafting, organisation, and consistency checks. The site operator remains responsible for publication, revision, and removal decisions.

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