Why your computer can't access the internet via Wi-Fi — a complete guide to diagnosing and troubleshooting

Have you connected to Wi-Fi, but your browser persistently displays the "No internet access" error, with a yellow triangle with an exclamation point next to the network icon in the system tray? This problem is familiar to millions of Windows users, and it's not always due to hardware failure. In 80% of cases, the culprit is operating system settings, drivers, or router settings, which can be fixed independently without calling a technician.

In this article we will look at All possible reasons why there is no internet connection via Wi-Fi on your computer

— from the mundane (a disabled adapter) to the exotic (an IP address conflict on the local network). You'll learn how to diagnose the problem in 2 minutes, and what settings to use. Windows 10/11 responsible for a stable connection, and why a simple reboot sometimes helps routerPlus, get a checklist of actions that will save you hours of searching for a solution.

Spoiler: if you have The Internet works on the phone, but not on the PC via the same Wi-Fi., the problem almost certainly lies in your computer settings, not your router's. And that's good news—such issues are usually the fastest to fix.

1. Checking the basic parameters: what to do first

Before digging deep into the settings Whether it's Windows or your router, make sure the problem isn't resolved with simple steps. Start with these steps—they take less than a minute, but in 30% of cases, they immediately restore network access.

  • 🔄 Reboot your routerUnplug it from the power outlet for 20 seconds, then plug it back in. Wait until it fully boots up (all indicators should be lit steadily).
  • 💻 Restart your computer. Yes, it's trivial, but after rebooting Windows Automatically resets network settings and reconnects to Wi-Fi.
  • 📶 Check other devicesConnect your smartphone or tablet to Wi-Fi. If the internet works, the problem is with your PC; if not, it's with your router or ISP.
  • 🔌 Make sure your Wi-Fi adapter is turned on.Laptops often have a physical button or key combination (e.g. Fn + F2) to disable the wireless network.

If the internet still doesn't work after these steps, proceed to diagnostics. But first, answer this question:

📊 How often do you have Wi-Fi problems on this computer?
First time
Regularly (once a week or more often)
Only after Windows update
After sleep/hibernation

Pay attention to the Wi-Fi indicator in the tray (bottom right). If it shows exclamation mark in a yellow triangle, this means that the computer is connected to the network, but no internet accessIf the icon is crossed out with a red cross, the problem is with the connection to the router.

2. Diagnosing the problem: identifying the source of the problem

To avoid wasting time trying to figure out all the possible causes, first isolate the problem. Here are some key questions to help narrow your search:

  1. Does the Internet work on other devices via the same Wi-Fi?

    ✅ Yes → the problem is in the computer settings.

    ❌ No → the problem is with the router or the provider.

  2. Does the "No Internet Access" error appear immediately after connecting or after some time?

    ➡️ Straightaway → incorrect IP/DNS settings may be present.

    ➡️ In 5-10 minutes → IP conflict or DHCP issues on the router.

  3. Did you change any router or Windows settings before the problem occurred?

    ⚙️ If so, rolling back the changes may help.

The fastest way to diagnose is to use the built-in troubleshooter. Windows:

  1. Open Settings → Network & Internet → Status.
  2. Click "Network troubleshooting».
  3. Follow the instructions of the diagnostic wizard.

If the troubleshooter returns a message like "The network settings saved on this computer do not match the requirements of this network.", the problem is almost certainly in the settings IP addresses or DNS servers.

What to do if diagnostics do not find any problems?

If the troubleshooter says "We couldn't fix the problem automatically," it doesn't mean there's no solution. It's just Windows I couldn't identify the cause. In this case, proceed to manual configuration of the parameters, described in the following sections.

3. IP and DNS Settings: Fixing the "No Internet Access" Error

One of the most common reasons for the lack of internet connection when connected to Wi-Fi is Incorrect IP address settings or DNS serversThis may happen after an update. Windows, changing the router or manually changing the parameters.

To check and correct the settings:

  1. Click Win + R, enter ncpa.cpl and press Enter.
  2. Find your Wi-Fi connection, right-click on it and select "Properties».
  3. In the list, check "Internet Protocol version 4 (TCP/IPv4)" and press "Properties».

Now check the settings:

  • 🔢 If they are worth it fixed IP/DNS (manually entered numbers) - try switching to automatic receipt:
Obtain an IP address automatically

Obtain DNS server address automatically

  • 🔄 If you already have automatic receiving enabled, but your internet connection isn't working, try entering it manually. DNS from Google or Cloudflare:
8.8.8.8

8.8.4.4


or


1.1.1.1


1.0.0.1

After changing the settings, don't forget to click "OK" and reconnect to Wi-Fi. If the issue was with DNS, the internet will work immediately.

☑️ Check IP/DNS settings

Completed: 0 / 5
⚠️ AttentionIf you're connected to a corporate or school network, manually changing your DNS may violate security regulations. In such cases, it's best to contact your network administrator.

4. Wi-Fi Adapter Driver Issues: Update and Reset

Outdated, damaged or incompatible network adapter drivers — the second most common reason for lack of internet access. This is especially true for Windows 10/11 after major updates, when the system automatically installs "universal" drivers instead of "native" ones.

How to check and update the driver:

  1. Click Win + X and select "device Manager».
  2. Expand the section "Network adapters».
  3. Find your Wi-Fi adapter (usually it has ".") in its name. Wireless, Wi-Fi or a model, for example Intel AX200).
  4. Right click → «Update driver» → «Automatic search».

If Windows It says that the drivers are up to date, but the problem remains:

  • 🔍 Uninstall the current driver and reboot your PC. The system will reinstall it.
  • 💾 Download the driver from the manufacturer's website (for example, for Intel, Realtek or Qualcomm Atheros) and install manually.
  • 🔄 Roll back the driverif the problem appeared after an update (Driver tab → Roll Back).

For laptops Lenovo, HP, Dell And ASUS installation often helps driver package from the manufacturer's website — there may be additional utilities for managing Wi-Fi.

⚠️ Attention: If after updating the driver the Wi-Fi adapter has disappeared from the Device Manager, check if it is disabled in BIOS/UEFIOn some laptops (HP Pavilion, Dell Inspiron) the wireless module can be accidentally disabled through Fn keys or in the BIOS settings (section Advanced → Wireless Device Enable).
Symptom Probable cause Solution
Wi-Fi connects, but drops out after 5 minutes. Adapter power saving Disable "Allow the computer to turn off this device to save power" in the adapter properties.
There are no available networks, although the router is working The adapter driver is not installed or is corrupted. Reinstall the driver from the manufacturer's website
The internet works, but it's very slow. Outdated driver or interference on the channel Update the driver and change the Wi-Fi channel in the router settings
Error: "Network parameters do not match" IP address conflict Reset TCP/IP (command netsh int ip reset)

5. Router-side issues: what to check in the settings

If the internet isn't working on any device connected to the router, the problem lies in its settings. Here's what to check first:

  • 🌐 Internet connectionMake sure the cable from your ISP is firmly inserted into the port. WAN (usually highlighted in blue). Check if the indicator is on. Internet on the router.
  • 🔄 Wi-Fi operating mode. In the router settings (192.168.0.1 or 192.168.1.1) Make sure Wi-Fi is turned on and working in mode 802.11n/ac/ax (and not only 802.11b/g).
  • 🔒 MAC address filteringIf the router has binding enabled MAC, your computer may be blocked. Check the list of allowed devices.
  • 📡 Channel and channel widthIf the router is operating on a congested channel (for example, 6 or 11), try changing it to 1, 3 or auto.

To access your router settings:

  1. Open your browser and type in the address bar 192.168.0.1 or 192.168.1.1 (the address is indicated on the router sticker).
  2. Enter your login and password (usually admin/admin or admin/password from sticker).
  3. Go to the section Wireless or Wi-Fi and check the settings.

If you are unsure about the settings, reset the router to factory settings (button Reset on the back panel, hold for 10 seconds). Attention: After the reset, you will have to reconfigure your internet connection (the provider's details are usually specified in the contract).

⚠️ Attention: Router settings may vary depending on the model and firmware. For example, in TP-Link The section with Wi-Fi is called Wireless, and in ASUS — Wireless networkIf you're unsure, check the instructions for your model.

6. Software conflicts: antiviruses, VPNs, and firewalls

Sometimes internet access is blocked third-party programs: antiviruses (Kaspersky, ESET, Avast), firewalls or VPN clients (NordVPN, ProtonVPN). They can:

  • Block connection to specific websites or to the internet completely.
  • Change network settings (for example, register your own DNS).
  • Conflict with network card drivers.

How to check:

  1. Temporarily disable your antivirus and firewall Windows (Settings → Update & Security → Windows Security → Firewall).
  2. Close VPN clients and check if you have any VPN extensions installed in your browser.
  3. Check the list of allowed programs in the firewall - perhaps the browser or another program is blocked.

If the internet works after disabling the antivirus, add the browser to the exceptions or try a different antivirus. For example, Bitdefender And Kaspersky sometimes conflict with drivers Realtek.

Also check if there are any installed on your computer proxy servers:

  1. Open Settings → Network & Internet → Proxy.
  2. Make sure the switch is "Use a proxy server" is disabled.

7. Hardware issues: when the adapter or router is at fault

If you have tried all software methods but the internet still does not work, the problem may lie in hardware:

  • 📡 Wi-Fi adapter malfunctionOn laptops, the wireless module may come loose from the connector or fail. On a PC, check if it's firmly inserted. PCIe-card or USB adapter.
  • 🔌 Router power supply problemsIf the indicators are flashing erratically or the router is overheating, its power supply may be faulty.
  • 📶 Interference from other devicesMicrowaves, cordless phones, and even neighboring Wi-Fi networks on the same channel can jam the signal.

How to diagnose hardware problems:

  • Connect your computer to the router via cableIf the internet works, the problem is with the Wi-Fi adapter or wireless network settings.
  • Try a different Wi-Fi adapter (For example, USB). If the Internet appears with it, your built-in adapter is faulty.
  • Check the router on another deviceIf there's no internet connection on any device, the problem is with the router or your internet provider.

If the adapter is faulty, it can be replaced. A module of the following format is suitable for laptops: M.2 2230 (For example, Intel AX200), for PC - PCIe-map (for example, TP-Link Archer T6E). Cost: from 1,500 to 5,000 rubles, depending on the model.

⚠️ AttentionIf your router is constantly overheating or shutting down, don't attempt to repair it yourself—it could be dangerous. It's best to contact a service center or replace the device.

8. Problems on the provider's side: what to do if your internet provider is to blame

If none of the above solutions helped, the problem may be with your Internet providerHere are some signs that your ISP is to blame:

  • The internet is not working on everyone devices connected to the router.
  • Indicator Internet The light on the router is off or flashing red.
  • In the router settings (Status or State) Internet connection status - "Disabled" or "Authentication error».

What to do:

  1. Reboot your router and wait 5-10 minutes — sometimes providers carry out technical work, and the connection is restored on its own.
  2. Check your personal account balance — perhaps you have run out of money and access is blocked.
  3. Call your provider's support team (The number is usually indicated in the contract). Say that you have “no connection” and give your name. MAC address of the router (indicated on the sticker).

If your provider says everything is fine on their end, but the internet isn't working:

  • Try connecting your provider's cable directly to the computer (without a router). If the internet appears, the problem is with the router.
  • Check if they have changed connection settings (for example, the type of connection with DHCP on PPPoE).

In rare cases the problem may be in cable break On the line from the provider to your apartment. Then you'll have to wait for a technician to arrive.

FAQ: Frequently asked questions about Wi-Fi issues on your computer

Why does Wi-Fi connect, but websites don't open, while Skype/Telegram work?

This is a typical sign of problems with DNS serversYour instant messengers use IP addresses directly, while browsers rely on DNS. Try manually entering Google's DNS (8.8.8.8) or Cloudflare (1.1.1.1) in the network adapter settings.

The internet connection disappears after the computer wakes up from sleep. How can I fix it?

There's a problem with your Wi-Fi adapter's power saving settings. Open device Manager, find your adapter, go to "Power management" and uncheck the box "Allow the computer to turn off this device to save power».

I have internet on my phone, but not on my computer. What's wrong?

Most likely, the problem is in the settings. IP/DNS on PC or in adapter drivers. Start by resetting your network settings (Settings → Network → Network reset), then check the IPv4 settings (they should be set to "Obtain automatically"). If that doesn't help, update the adapter driver.

The router is distributing Wi-Fi, but there's no internet access. What should I do?

This means the router can't connect to your internet provider. Check:

  • Is the indicator light on? Internet on the router.
  • Are the connection details (login/password from the provider) entered correctly?
  • Is the money in the account running out?

If everything is fine, reboot the router and call your provider's support team.

My Wi-Fi stopped working after a Windows update. How do I fix it?

Windows may have installed an incompatible driver. Open device Manager, find the Wi-Fi adapter, right-click and select "Roll back the driverIf the button is inactive, download the driver from the laptop or adapter manufacturer's website and install it manually.

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