A computer that will not connect to the internet may have a Wi-Fi fault, ethernet fault, adapter issue, DNS problem, router issue or security setting in the way.
The right order matters. If every device is down, do not spend an hour repairing Windows. If only the computer is down, do not wipe the router.
Check in this order
Run through the safe checks before you spend money, reset devices or start changing settings you may need later.
- Check whether other devices can get online.
- Restart the computer fully.
- If using Wi-Fi, forget and rejoin the network.
- If using ethernet, try a different cable or router socket.
- Disable VPN temporarily if one is installed.
Search intent
What this guide is designed to answer
People searching for "computer will not connect to the internet" 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 will not connect to the internet" 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.
Wi-Fi and ethernet fail differently
If ethernet works but Wi-Fi does not, the wireless adapter, driver or saved network may be the issue. If Wi-Fi works but ethernet does not, the cable, socket or network card matters.
If neither works on one computer but other devices are fine, Windows network settings become the focus.
DNS can make the internet look broken
Sometimes the computer has a connection but cannot translate website names. That can make browsers fail while the actual network connection is alive.
- No networks visible: adapter or driver
- Connected but no browsing: DNS or IP
- All devices down: router or provider
Remote support may work if there is another route online
If the computer can use a phone hotspot or ethernet, remote help may be enough. If it cannot get online at all, a visit is usually more practical.
Do not delete network drivers without a plan
Removing the wrong adapter or driver can leave the computer with no easy way back online.
Quick questions
Can a computer be connected but still not browse?
Yes. DNS, IP, VPN, browser and security settings can all break browsing while the connection appears active.
Is this a router problem?
If other devices work, probably not. If every device fails, the router or provider is more likely.
Can you fix Windows internet settings?
Yes. I can repair Windows network settings, drivers and configuration where appropriate.
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.