The laptop is connected to Wi-Fi, but the Internet does not work - what should I do?

You open your laptop and connect to your usual network. Wi-Fi, but the browser stubbornly gives the error “No Internet connection”, and next to the network icon there is a yellow triangle. Is the situation familiar? According to statistics 37% of Internet problems on laptops are not related to the provider, but to the local settings of the device or router. In this article we will analyze all possible reasons - from a banal disabled adapter to hidden conflicts IPv4/IPv6, and also give step by step instructions for Windows 10/11 And macOS.

It is important to understand: if other devices (smartphone, tablet) are connected to the same Wi-Fi and work fine, the problem lies with your laptop. If the Internet disappears on all gadgets, the router or provider is to blame. We'll focus on the first scenario, where the laptop is the culprit. Ready to get your internet back?

1. Checking basic settings: adapter, flight mode and services

Start with the obvious - sometimes the problem can be solved in just two clicks. The first thing to do is make sure that Wi-Fi adapter is enabled physically and programmatically. Most laptops have a key or combination (for example, Fn + F2 on Lenovo or Fn + F12 on HP), which disables the wireless network. Check if you pressed it accidentally.

Next, open Control Panel → Network and Internet → Network Connections (in Windows 10/11) or go to System Settings → Network (on macOS). Make sure the connection status is Connected and not Disconnected or Restricted. If there is an exclamation mark next to the network name, right-click on it and select Troubleshooting — the system itself will try to correct the error.

• 🔄 Reboot your laptop and router. In 20% of cases this solves the problem without additional action.
• ✈️ Turn off airplane mode. B Windows it can activate automatically when the battery is low.
• 🛠️ Check the WLAN Auto Config service. Run services.msc, find the service and make sure it is running (status "Running").
• 🔌 Connect to the network with a cable. If the Internet works, the problem is definitely in Wi-Fi- laptop module.

⚠️ Attention: On some laptops Dell And Acer there is a hardware switch Wi-Fi on the body - check its position. If the switch is broken, the adapter may turn off randomly.

2. IP address conflicts: how to reset network settings

One of the most common reasons is IP address conflict, when the router assigns your laptop an address that is already occupied by another device. As a result, there is a connection, but the Internet does not work. To fix this you need reset cache DNS and update IP.

Open command line as administrator (enter cmd in the search, then right-click - "Run as administrator") and execute the commands sequentially:

ipconfig /release
ipconfig /renew
ipconfig /flushdns
netsh winsock reset
netsh int ip reset

Once done, reboot your laptop. If the problem was DNS-cache or old IP, the Internet should work. For macOS similar commands are executed in Terminal:

sudo dscacheutil -flushcache
sudo killall -HUP mDNSResponder

OS	Command to reset DNS	Command to update IP
Windows 10/11	ipconfig /flushdns	ipconfig /release → ipconfig /renew
macOS	sudo dscacheutil -flushcache	sudo ifconfig en0 down → sudo ifconfig en0 up
Linux (Ubuntu)	sudo systemd-resolve --flush-caches	sudo dhclient -r → sudo dhclient

⚠️ Attention: If after reset IP you see an address like 169.254.x.x, this means that the router does not provide your laptop with the correct IP. Check your settings DHCP on the router or assign a static IP manually.

3. Problems with Wi-Fi adapter drivers: update and rollback

Outdated, damaged or incompatible network adapter drivers - a common reason for lack of Internet access. Especially relevant after the update Windows or replacement Wi-Fi-module. To check the driver:

1. Open Device Manager (Win + X → Device Manager).
2. Expand the tab Network adapters.
3. Find yours Wi-Fi-adapter (usually in the name there is Wireless, Wi-Fi or model, for example, Intel AX200).
4. Right click and select Update driver → Automatic search.

If the update doesn't help, try roll back the driver to the previous version (in the same menu, select Properties → Driver → Roll Back). For macOS drivers are updated via Software update in system settings.

• 🔧 Remove the driver completely and reboot the laptop - the system will install it again.
• 🌐 Download the driver from the manufacturer's website (for example, for Intel — downloadcenter.intel.com, for Realtek - from the official website of your laptop model).
• 🛑 Disable automatic driver updates in Windows, if the problem occurs after updates.

Critical information: On laptops with adapters Killer Wireless (often found in game models MSI And Alienware) drivers from Microsoft may conflict with proprietary software. Uninstall the program Killer Control Center through Control Panel → Programs and Features and install the driver manually from the manufacturer's website.

4. Router settings: MAC filtering, channel and Wi-Fi standard

If the problem occurs with only one router, its settings may be to blame. For example, filtering by MAC-address locks your laptop, or is selected too busy Wi-Fi-channel Go to the router's web interface (usually at 192.168.0.1 or 192.168.1.1, login/password - on the device sticker) and check:

• 🔒 Is filtering disabled? MAC-addresses (section Wireless → MAC Filter).
• 📶 What standard Wi-Fi used. If the router only works in mode 802.11n, and your adapter supports 802.11ac/ax, conflicts may arise. Set mixed mode (802.11b/g/n/ac).
• 🎛️ Which channel is selected. Channels 12-14 may not be supported in some countries. Try installing 6 or 11.
• 🔄 Is it included DHCP. If disabled, the laptop will not receive IP-address automatically.

Also check if it is enabled on your router client isolation mode (AP Isolation) — it blocks interaction between devices on the same network. If yes, disable it in settings Wireless.

How to find out the MAC address of a laptop?

Open a command prompt and type ipconfig /all. Find the "Physical Address" line for your Wi-Fi-adapter - that's it MAC-address.

5. Antivirus and firewall: when protection blocks the Internet

Aggressive Settings antivirus or firewall Windows may block the network connection. For example, Kaspersky Internet Security or Avast sometimes define Wi-Fi- the network as “unsafe” and restrict access to it. To check this:

1. Temporarily disable the antivirus (right-click on the tray icon and select “Disable protection”).
2. Check if the Internet is available. If yes, the problem is in the antivirus settings.
3. Open Windows Defender Firewall (Control Panel → Firewall) and make sure your network is marked as "Private" and not "Public".

For macOS check your settings Firewall in System Settings → Protection and Security. If the Internet is blocked, add browsers (Safari, Chrome) to the exclusion list.

⚠️ Attention: Some corporate antiviruses (for example, ESET NOD32 or Dr.Web) completely block access to the network when the license expires. Check your subscription status in the main program window.

6. Specific problems: IPv6, proxy and VPN

If the basic methods don't help, the problem may be hidden in less obvious settings. Let's consider three scenarios:

• 🌍 Conflict IPv4 And IPv6. Some providers do not support IPv6, but Windows by default tries to use it. Open Connection properties → IPv6 protocol and uncheck the box.
• 🕵️ Proxy server. If you previously configured a proxy (for example, for anonymity), it might remain enabled. Check in Settings → Network and Internet → Proxy.
• 🔒 VPN connections. Active VPN (For example, NordVPN or ProtonVPN) can redirect all traffic through its servers. Disable VPN and check the connection.

Also worth checking host file for blockages. Open it along the way C:\Windows\System32\drivers\etc\hosts (administrator rights are required) and make sure that there are no lines with site redirection to 127.0.0.1.

7. Hardware faults: how to check Wi-Fi-module

If the software methods do not work, the problem may be hardware - for example, the antenna comes off Wi-Fi-module or the module itself has failed. Here's how to diagnose it:

• 🔍 Check the indicator Wi-Fi. On some laptops (eg Asus or MSI) there is an LED indicating that the adapter is working. If it does not light up, the module is faulty.
• 🔧 Connect external Wi-Fi-adapter (via USB). If the Internet works with it, the problem is in the internal module.
• 💻 Test your laptop on another router. If the problem persists, the adapter is at fault.

On laptops with a collapsible design (for example, Lenovo ThinkPad or Dell Latitude) you can extract it yourself Wi-Fi-module and check its contacts. If you are not confident in your abilities, contact the service center.

💡

If the laptop does not see any network Wi-Fi (even neighboring ones), with a 90% probability the problem is in the hardware - the adapter or antennas.

FAQ: Frequently asked questions about problems with Wi-Fi on a laptop

Why does my laptop connect to Wi-Fi, but no websites open?

This may be due to:

• Incorrect settings DNS (try using 8.8.8.8 And 8.8.4.4 from Google).
• Blocking traffic with an antivirus or firewall.
• Problems on the provider's side (check if sites open on other devices).

How to reset network settings to factory settings in Windows 10/11?

Go to Settings → Network and Internet → Status → Network reset. Once confirmed, the laptop will reboot and all network settings will be reset.

What to do if Wi-Fi is lost after updating Windows?

Most likely, the new software conflicts with the adapter driver. Roll back the system to a previous version via Settings → Update & Security → Recovery or install the driver manually from the laptop manufacturer's website.

Can a virus block access to the Internet?

Yes, some viruses (for example, Trojan.Winlock) change settings DNS or proxies, redirecting traffic to fraudulent servers. Check the system with Dr.Web CureIt! or Kaspersky Virus Removal Tool.

Why does my laptop lose Wi-Fi connection after sleeping?

This is a common problem with adapter power management. Open Device Manager → Network Adapters → Properties of your adapter → Power Management and uncheck Allow this device to turn off to save power.