Many users are familiar with the situation where your smartphone or laptop shows a Wi-Fi connection icon, but webpages won't load in the browser. The device screen may display the message "No internet access," "Connected, no access," or "Limited." This status means that the physical connection between your device and the router has been established successfully, but further access to the internet is blocked or interrupted. TCP/IP protocol cannot complete the handshake with the remote server, leaving you in the local perimeter.
There can be many reasons for this system behavior: from a simple provider malfunction to complex IP address conflicts within the local network. Often, the problem stems from incorrect settings. DNS servers, which act as the internet's address book. Understanding how data exchange occurs will help you quickly isolate the problem and restore normal network operation.
In this article, we'll cover diagnostic algorithms in detail, from checking your ISP's cable to thoroughly configuring your network adapters. We won't rely on chance, but rather use a systematic approach. In 80% of cases, the problem is resolved by simply rebooting the hardware or resetting the operating system's network settings. Let's figure out why your router TP-Link or Keenetic I stopped distributing internet, and what needs to be done right now.
Diagnostics of router hardware and indicators
The first step should always be a visual assessment of the equipment's status. A router is a smart device that communicates its status through a system of LED indicators. If only the power light is on and the WAN indicator (usually labeled as WAN, Internet If the indicator (or globe) is off or red, it means there's no physical connection to your ISP. This could be due to a broken cable, problems on the ISP's end, or a faulty router port.
Pay attention to the Wi-Fi indicators. If they're flashing, data is being transferred, even if you can't access the website. However, if the WAN indicator is green but the internet isn't working, the problem may lie in the logic settings or authentication. Modern models, such as Asus RT-AX or MikroTik, often have a more detailed indication that allows you to understand whether there is an IP address received from the provider.
⚠️ Important: If the WAN indicator doesn't light after connecting the ISP cable, try replacing the patch cord or reconnecting it to a different port if your router model allows it. Avoid using damaged or kinked cables.
It's also worth checking to see if the device is overheating. If left running for long periods without ventilation, the router's processor may throttle or freeze, leading to packet loss. In this case, the device may continue to broadcast a Wi-Fi signal, but it will no longer be able to route traffic. Unplug the device from the power outlet for 10-15 seconds to reset the temporary buffer.
Problems on the provider's side and account balance
Before delving into complex computer settings, it's important to rule out external factors. Often, a "network without access" is simply the result of service blocking by the internet provider. The reasons can be as simple as running out of money, expiring a data plan, or the provider performing scheduled maintenance. In such cases, the router receives a signal, but the provider doesn't allow traffic past its gateway.
Check your account balance through your provider's mobile app or personal account. Even if you think you should have enough money, the system may have automatically changed your tariff or charged you early. It's also worth checking the network status in your area—major outages often occur due to damage to main cables during construction.
If you're using a PPPoE or L2TP connection, make sure your username and password are correct. When changing your password in your provider account, you must also update it in your router settings. An authorization error often results in a situation where Wi-Fi is available but the internet is down, as the tunnel cannot be established.
| Type of problem | WAN indicator | Status in OS | Probable cause |
|---|---|---|---|
| Cable break | It doesn't burn. | The network cable is not connected | Physical damage to the line |
| No authorization | Flashing/On | No internet access | Incorrect PPPoE login/password |
| Blocking | It's on fire | Limited | Negative balance |
| Provider's failure | Flashing | Identification... | Technical work on the unit |
⚠️ Please note: Tariff plan terms and payment methods are subject to change. Always check your provider's official app or website for up-to-date balance and service status.
IP address conflicts and DHCP settings
One of the most common technical reasons for internet downtime is an IP address conflict. Each local network is responsible for distributing addresses. DHCP server, which is usually a router. Each connected device must be assigned a unique address, for example, 192.168.1.5If two devices attempt to use the same address, or if the computer has a static IP address that does not match the router's subnet, access to the gateway will be denied.
Users often manually change network adapter settings to work with a printer or local server, and then forget to reset the settings to automatic. As a result, when connecting to a home network, the computer continues to search for a gateway using the old coordinates. To fix this, you need to check the protocol properties. IPv4 in the network settings.
☑️ Check IP settings
You can use the command line to reset network settings in Windows. Launch Terminal as administrator and enter the command to flush the DNS cache and renew the IP address. This often resolves issues when the system is stuck on old settings.
ipconfig /releaseipconfig /renew
ipconfig /flushdns
If the problem persists, try manually entering DNS servers. Using Google's public DNS (8.8.8.8) or Cloudflare (1.1.1.1) often helps bypass issues with your provider's DNS servers, which may be unstable. This is especially helpful if websites take a long time to load or return the error "The DNS address cannot be found."
DNS and browser cache issues
Even with a perfect connection to your ISP's server, you won't be able to access the site if the domain name system (DNS). It is she who translates human-readable addresses like google.com into machine IP addresses. If the provider's DNS server is down or blocked, the browser will spin the loading wheel endlessly, although the ping to the IP addresses may work.
Additionally, an overflowing or corrupted DNS cache on the computer itself could be the cause. The operating system maintains a lookup table to avoid re-querying a website address each time. If an error occurs in this table, it will persist until a forced cleanup is performed. It's also worth checking the file. hosts, which can block access to certain resources at the system level.
How to check the hosts file?
The hosts file is located at C:\Windows\System32\drivers\etc\hosts . Open it with Notepad as an administrator. If there are lines with website addresses that won't open, try commenting them out with the # symbol or deleting them.
Don't forget about your browser's cache. Sometimes the problem isn't system-related, but rather a specific app. Try opening the website in incognito mode or a different browser. If everything works there, you need to clear your browser's history and cache. Extensions and plugins, especially ad blockers or VPNs, can also block the connection.
Network card drivers and software conflicts
The software that controls your network adapter may not be working properly. Drivers tend to become outdated, become corrupted during Windows updates, or conflict with antivirus software. If you see a yellow exclamation point next to your network adapter in Device Manager, the problem is definitely with the driver. Even without the exclamation point, the adapter may be running in power-saving mode, shutting down at inopportune moments.
Antiviruses and firewalls often become invisible culprits in problems. After updating their signature databases, they may begin blocking secure connections, deeming them suspicious. Try temporarily disabling your third-party antivirus and the built-in Windows firewall to see if they are the cause of the blocked traffic.
To update drivers, it's best to use the official website of your laptop or motherboard manufacturer, rather than generic auto-installers. Download the latest driver for your model. Realtek, Intel or Atheros and install it manually. After installation, be sure to restart your computer.
Resetting the router settings and reinstalling the firmware
If none of the previous methods help, the router itself may have accumulated software errors or been misconfigured. The router's internal memory can become full of error logs, leading to unstable operation. In this case, the most effective solution is a full factory reset. This will return the device to its "out of the box" state.
To reset, find a small hole with the inscription on the router body. Reset or DefaultPress it with a paperclip and hold it for 10-15 seconds until the lights flash simultaneously. After this, the router will reboot, and you'll need to reconfigure your internet connection using your provider's information.
⚠️ Note: A full reset will erase all your settings, including the Wi-Fi network name, password, and connection parameters. Make sure you have your ISP contract handy so you can re-enter your PPPoE/L2TP login and password if required.
It's also worth checking for firmware updates for your router model. Manufacturers regularly release patches that fix security vulnerabilities and operating errors. TCP/IP stack. Go to the router's web interface (usually 192.168.0.1 or 192.168.1.1), find the "System Tools" or "Administration" section and check for a new version of the software.
Frequently Asked Questions (FAQ)
Why is there Wi-Fi on my phone but not on my computer?
This indicates a problem with your computer's settings or drivers, as the router is providing internet access without issue. Check your IPv4 settings, antivirus software, and Wi-Fi adapter drivers on your PC.
What does the "Identification" error mean in Windows?
The computer sees the router but can't obtain an IP address from it or can't authenticate with the ISP. Check the WAN cable and DHCP settings.
Can a virus block the Internet when Wi-Fi is working?
Yes, some malware changes proxy or DNS settings, redirecting traffic. Scan your system with an antivirus and reset your network settings.
How often should I reboot my router?
It is recommended to perform a preventative reboot of the router at least once a week to clear the RAM and refresh the connection with the provider.