A router can still broadcast Wi-Fi even when the broadband behind it has failed. That is why a phone, laptop or smart TV can say connected, have full bars, and still refuse to load BBC, banking, email or WhatsApp.
Across Ayrshire, I see this most often after a provider router update, a power cut, a new BT/EE/Sky/TalkTalk/Vodafone/Plusnet hub, a Virgin Media Hub reboot, or a full-fibre ONT box being disturbed during decorating or furniture moves.
The right fix depends on where the break is: your device, the Wi-Fi, the router, the Openreach or Virgin line, the full-fibre ONT, or an outage affecting your area. Start with the checks below before replacing anything.
Do these checks in order
Run through the safe checks before you spend money, reset devices or start changing settings you may need later.
- Check two different devices: one phone on Wi-Fi and one laptop or tablet if possible.
- Turn mobile data off on your phone before testing, otherwise it may hide a broadband fault.
- Check a wired device by Ethernet if you have one. Ethernet working but Wi-Fi failing points to wireless, not the broadband line.
- Look at the router light: BT/EE blue usually means connected, Sky white/green is normally good, TalkTalk white is normally good, Virgin solid white is usually ready.
- If you have full fibre, check the separate Openreach ONT box. The optical/PON light matters as much as the router light.
- Restart the router from the power switch or wall socket, wait 30 seconds, then give it 5 to 10 minutes to settle.
- For Virgin Media, also check the coax cable is finger-tight at the hub and wall point.
- For Openreach-based broadband, check the grey DSL cable, microfilter or Ethernet cable from the ONT has not been knocked loose.
- Check the provider status page or app before assuming the router is faulty.
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Official references worth checking
Ofcom: broadband speeds and minimum guarantees
Useful when the line itself is underperforming and you need to know what your provider should investigate.
Openreach: checks for fibre ONT boxes
Helpful for full-fibre homes with an Openreach ONT, especially when PON or LOS lights are involved.
BT: factory resetting a BT Hub
Confirms what a factory reset does and why it is different from a normal restart.
Full Wi-Fi bars do not prove the internet is working
Wi-Fi is only the local connection between your device and the router. The router still needs a working broadband path out of the house. If that path is broken, every device can show strong Wi-Fi and still have no internet.
That is why the first question is not 'how strong is the Wi-Fi?' but 'does anything in the house actually get online?' If every device fails, look at the router, ONT, cables, provider line or outage. If one device fails, look at that device first.
- One device fails: likely laptop, phone, DNS, browser, VPN or saved Wi-Fi issue.
- Every Wi-Fi device fails but Ethernet works: likely wireless settings, router Wi-Fi or mesh/extender issue.
- Every device fails, wired and wireless: likely router, ONT, cable, provider line or outage.
Check the router lights against the provider you actually use
UK routers use different light colours, so generic advice can mislead you. A BT or EE Smart Hub showing blue usually means the hub thinks broadband is connected. TalkTalk and Sky use their own light patterns. Virgin Media Hubs behave differently again because they use Virgin's network rather than the standard Openreach phone/fibre path.
In Ayrshire homes, I would check the provider equipment first: BT/EE/Plusnet often use a Smart Hub style interface, Sky and TalkTalk have their own hubs, Vodafone can be paired with CityFibre/Openreach depending on the street, and Virgin Media uses its own hub and coax/fibre setup.
- BT, EE and Plusnet: check hub light, then try 192.168.1.254 for the Hub Manager if connected.
- Sky: check the hub light and whether Sky's service checker reports an issue.
- TalkTalk: a solid amber/orange state after a long wait can point to a hub or line fault.
- Virgin Media: check hub light, coax cable, service status and whether the hub is in modem mode.
- Full fibre: check the ONT power and optical/PON lights before blaming Wi-Fi.
The Ayrshire reality: outage, line fault or home setup?
A house in Ayr, Prestwick, Troon, Irvine, Kilmarnock, Saltcoats or Cumnock can lose internet for very different reasons. Sometimes it is a provider outage. Sometimes Openreach work, a cabinet fault, a damaged cable, a router update or a Virgin area fault is involved. Sometimes the line is fine and the problem is a mesh disc, extender, old printer or one Windows laptop holding bad network settings.
A quick local diagnosis separates those. If the ONT has no optical signal, no amount of laptop troubleshooting will fix it. If the router has internet but one laptop says 'no internet', the provider is probably not the first call.
- Ask a neighbour on the same provider if their broadband is down too.
- Check the provider app/status page using mobile data.
- Note the exact router light colour before restarting it.
- Do not move every cable at once. Change one thing, then test.
When a restart is enough
A normal restart is safe and often useful. It clears a stuck router process, refreshes the broadband session and lets the hub reconnect cleanly after a power dip. The mistake is switching it off and on repeatedly every minute. Many UK routers need several minutes to reconnect after a proper reboot.
Use the power button or wall socket, leave it off for about 30 seconds, then wait. For Virgin Media, allow 5 to 10 minutes. For BT/EE/Plusnet/Sky/TalkTalk/Vodafone, give the router time to move from startup lights to its normal connected state.
Factory reset: useful, but not the first button to press
Factory resetting a provider router is a legitimate troubleshooting step, and UK providers publish instructions for doing it. On a normal supplied router, a reset usually restores the hub to its default state rather than creating an activation problem.
The real downside is different. A factory reset wipes custom settings. If you changed the Wi-Fi name, Wi-Fi password, admin password, port forwarding, parental controls, guest Wi-Fi, DNS, static IPs, modem mode, mesh pairing or extender pairing, those can need set up again.
That is why I would normally restart first, check provider status, check the ONT/cables, and only then reset if the symptoms fit. If you do reset, have the default Wi-Fi name/password and admin password from the router label ready.
- Factory reset can help if the router settings are corrupted or the hub will not behave after updates.
- Factory reset is overkill if only one laptop, phone or printer has the issue.
- After reset, reconnect using the default Wi-Fi details on the hub label or card.
- If you use a custom Wi-Fi name to keep printers and smart devices connected, be ready to recreate it exactly.
If the router says connected but pages still fail
Sometimes the router claims it is online but devices still cannot browse. That can be DNS, a VPN, parental controls, security software, a bad IPv6 state, a faulty extender, or a router giving devices the wrong network details.
A simple test is to try more than one kind of service. If Google opens but banking does not, that is different from nothing loading at all. If WhatsApp works on a phone only when mobile data is on, the broadband is still suspect.
- Try a website, email, WhatsApp and a speed test rather than one page only.
- Temporarily disconnect from VPN software before blaming the provider.
- Bypass extenders or mesh discs and test beside the main router.
- If Ethernet works but Wi-Fi does not, focus on wireless settings and interference.
What I check on an Ayrshire visit
On a local visit I do not just restart the router and hope. I map the fault: provider status, router lights, ONT lights, wired test, Wi-Fi test, DNS, device IP details, router admin page, mesh/extender behaviour and whether the issue follows one device or affects the whole property.
That lets me tell you whether it is worth pushing BT, EE, Sky, TalkTalk, Vodafone, Plusnet, Virgin Media or another provider, or whether the fix is inside the house. It also avoids paying for new mesh kits, boosters or routers when the real fault is upstream.
Do not reset until you know what you will lose
A factory reset is a valid UK ISP troubleshooting step, but it wipes custom router settings. If you rely on renamed Wi-Fi, extenders, smart devices, CCTV, port forwarding or modem mode, note those settings before resetting.
Quick questions
Why can I connect to Wi-Fi with no internet?
Wi-Fi is the local connection to the router. The router still needs a working broadband connection through Openreach, Virgin Media, CityFibre or another provider network.
Should I factory reset my router?
Only after simpler checks. Factory reset is valid and providers support it, but it wipes custom Wi-Fi names, passwords and advanced settings.
Is this a provider issue or a home issue?
If every wired and wireless device fails, it may be provider, router, ONT or cable related. If one device fails, it is more likely a device or saved network problem.
Can you help if the provider says the line is fine?
Yes. I can test the router, Wi-Fi, Ethernet, ONT, extenders and devices, then give you clearer evidence before you go back to the provider.
Maintained by
Graeme Tudhope, Ayrshire Tech Help
Graeme has been repairing computers, fixing Wi-Fi and helping Ayrshire homes and small businesses since 2008. Every article is based on real problems seen during local home visits, bench repairs and remote support sessions, with advice written to protect files, money and time before anyone books paid help.