Few computer messages are more annoying than 'no internet' when you can see the Wi-Fi is connected, the router lights look normal, or another device is working fine.
The trick is to avoid treating every no-internet message as the same fault. Sometimes the broadband is down. Sometimes the router is stuck. Sometimes one computer has bad DNS, a confused IP address or security software blocking the connection.
The two-minute split test
Run through the safe checks before you spend money, reset devices or start changing settings you may need later.
- Check one other device on the same Wi-Fi. If it works, the computer is the likely problem.
- Check whether the computer is on Wi-Fi, ethernet or a guest network.
- Restart the computer once before changing router settings.
- Unplug the router for 30 seconds, then give it three minutes to reconnect.
- If every device fails after the router restart, check your broadband provider's outage page.
Search intent
What this guide is designed to answer
People searching for "computer says no internet connection but there is" usually need to know whether the provider, router, Wi-Fi signal or one device is to blame.
This is based on real Ayrshire broadband jobs where the visible symptom was the same but the cause changed between Openreach full fibre, Virgin Media coax, older copper lines, mesh systems and one misbehaving device.
Ayrshire-specific context
Across Ayr, Prestwick, Troon, Irvine, Kilmarnock, Saltcoats, Cumnock, Largs and the villages between them, "computer says no internet connection but there is" often means different things depending on the property: older stone walls, converted flats, Openreach ONTs tucked in cupboards, Virgin Media hubs behind TVs, or extenders left using an old Wi-Fi name. The guide keeps those UK and Ayrshire realities in mind.
What the symptoms usually mean
Every device is offline or painfully slow
Usually points to
The fault is more likely to be the router, ONT, broadband line, provider outage or cabling.
Best next step
Check provider status, ONT/router lights, then test with one device close to the router before changing settings.
One laptop or computer fails but phones still work
Usually points to
The broadband service is probably alive; the affected device may have a Wi-Fi profile, DNS, driver or security problem.
Best next step
Forget and rejoin the network, test another browser, check date/time, and avoid resetting the router first.
Wired speed is fine but Wi-Fi is poor
Usually points to
This is usually coverage, interference, router position, channel congestion or mesh/extender setup.
Best next step
Test next to the router and in the problem room, then decide whether placement, cabling, mesh or access points are needed.
How to get the best outcome
- Decide whether the problem affects one device, one room, or the whole house before resetting anything.
- Record the router or ONT light state and your provider name, because BT, EE, Sky, TalkTalk, Vodafone, Plusnet and Virgin Media setups differ.
- Use an ethernet speed test when possible so you do not blame the provider for an in-home Wi-Fi issue.
- Ask for local help if the fix needs cabling, mesh placement, router settings or several devices reconnected.
Maintained guidance
Why you can trust this page
Last updated for Ayrshire Tech Help on 26 April 2026. The advice is written from real support work, keeps data and safety ahead of sales, and links to official sources where provider, security or operating-system guidance matters.
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.
Related Ayrshire guides
Wi-Fi not working in Ayrshire
Local help for router, broadband, weak signal and whole-home Wi-Fi problems.
Router connected but no internet access
UK-specific router, ONT, ISP and device checks before calling your provider.
Slow Wi-Fi fixes
How to separate a slow broadband line from poor Wi-Fi coverage inside the house.
One computer failing usually means a device fault
When every other device can browse, the computer may be connected to the local network but unable to reach the internet properly. Common causes include DNS problems, expired IP settings, a damaged network profile, security software, VPN settings, or a driver fault.
This is the point where 'the Wi-Fi is broken' becomes too vague. The Wi-Fi may be fine. The computer's route through it is what needs repaired.
Every device failing points upstream
If phones, tablets, laptops and smart TVs all connect but cannot load anything, the fault is more likely to be router, broadband line, provider outage, ONT, microfilter or account provisioning.
A mesh system or Wi-Fi extender will not fix that. Extenders help signal. They do not create internet when the router itself has no working connection.
- One device fails: check the device first
- Every device fails: check router and provider
- Only one room fails: check Wi-Fi coverage
Why this often needs an on-site diagnosis
No-internet faults can sit between device, router and provider. Seeing the setup in person makes the diagnosis much faster: router lights, cable path, Wi-Fi strength, device behaviour and provider equipment all tell part of the story.
If the provider says the line is fine but your house still cannot work normally, I can gather the evidence and separate what is yours from what is theirs.
Do not buy extenders for a no-internet problem
If the router or provider connection is the fault, an extender or mesh kit will only repeat a broken connection. Diagnose the internet fault before spending money on coverage.
Quick questions
Why does my computer say no internet when Wi-Fi is connected?
Wi-Fi connection only means the computer joined the router. It does not guarantee the computer can reach the internet correctly.
Is this a broadband provider problem?
If every device is affected, possibly. If only one computer is affected, the computer settings or adapter are more likely.
Can you prove whether the provider is at fault?
I can test the setup and give you clearer evidence. If the fault sits with the provider, you will know what to report.
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.