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uk Technology & digital loss router reset unexpectedly • wifi dropped all devices • internet down suddenly • broadband went out at once • home network offline • router reboot loop • hub restarted by itself • modem router lost connection • all devices no internet • wifi connected no internet • router settings changed • ssid changed after reset • network password stopped working • isp outage or fault • lights on router changed • broadband connection dropped • router factory reset worry • home wifi stopped working

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

Short answer

Treat it as either a broadband provider outage or a router reboot/reset. Do one calm reboot (power-cycle) and check your provider’s service-status/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/off repeatedly in quick succession (it can delay reconnection and make fault-finding harder).
  • Don’t change multiple settings “to try things” (you can lock yourself out and 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 defaults.

What to do now

  1. Check for immediate knock-on risks in your home. If you rely on internet for a landline, telecare, alarms, or smart locks/cameras, assume they may be offline. Use a mobile phone as your call backup and tell others in the home.
  2. Look at what the router is doing right now. If it looks like it’s still booting/connecting (lights changing), give it a few minutes before intervening.
  3. Do one clean power-cycle (not a factory reset).
    • Turn the router off (or unplug power), wait at least ~30–60 seconds, then power it back on and let it fully boot.
    • If you have a separate modem/ONT plus a router: power off both, then power on the modem/ONT first; once it looks stable, power on the router.
  4. Check whether it’s a provider issue before you change anything. In your broadband provider’s app/website, look for “service status”, “outage”, or “broadband troubleshooter”. If an outage is shown, stop troubleshooting and note the time it started.
  5. Check whether the router appears to have factory-reset. Clues include:
    • Your usual Wi-Fi network name (SSID) vanished or changed.
    • Your Wi-Fi password no longer works.
    • The network name/password now match the sticker on the router (default details).
  6. If Wi-Fi returns but there’s still “no internet,” test one device by cable if you can. Plug a laptop/PC into the router with Ethernet (if available). If wired also has no internet, it points to the router-to-provider link (or provider-side issue), not just Wi-Fi.
  7. If it’s still down, report the fault via your provider’s support route. Share: when it started, whether it looked like a reboot/reset, and what the lights are doing now. Ask them to run line checks and confirm whether your router/modem shows as connected from their side.
  8. If you must get online urgently, use a temporary fallback. Use a phone hotspot for essentials. Avoid major account/password changes while your 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 or change channels while you’re still establishing whether it’s an outage vs. a local fault.
  • You can postpone any deep troubleshooting (firmware/admin settings) until after you’ve checked service status and logged the fault if needed.

Important reassurance

A sudden “everything dropped at once” event is often a routine provider outage or a normal equipment reboot/update. A single calm power-cycle plus a service-status check avoids making things worse.

Scope note

These are first steps to stabilise, identify whether the problem is local vs. provider-side, and avoid irreversible changes. If it repeats, you may need provider diagnostics or a replacement device later.

Important note

This is general information, not provider-specific or professional advice. If you depend on connectivity for safety or care devices, treat any broadband loss as time-sensitive and contact your provider promptly.

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