You turned on your laptop or PC, but the Wi-Fi icon was gone—or the network was there, but you couldn't connect. This situation is familiar to every second user, and the cause could be the computer itself, the router, or the ISP. In 80% of cases, the problem can be resolved in 5–15 minutes without calling a technician.
In this article we will look at all possible scenarios: from a simple adapter shutdown to complex driver conflicts. Let's take a closer look at Windows 10/11, macOS And LinuxWe'll also provide a checklist for checking your router. If you're not a techie, don't worry: the instructions are written in plain language with step-by-step screenshots and commands to copy.
Let's start with the most obvious: check if Wi-Fi is turned off. physicallyOn laptops, this may be a separate button (for example, on the keyboard Lenovo or HP) or a combination Fn + F2/F5/F12 (Depending on model). On desktop PCs, make sure the Wi-Fi adapter is connected to a USB or PCI port and is securely attached.
1. Check the basic settings: is Wi-Fi enabled in the system?
If everything is physically in order, but Wi-Fi is still not visible, first check the operating system settings. Windows This is done through the notification panel or network settings.
Tap the network icon in the lower right corner of the screen (near the clock). If there's no list of networks there, only the "Airplane" icon (airplane mode)— turn it offAlso, make sure Wi-Fi isn't manually disabled:
- 🖥️ Windows 10/11:
Start → Settings → Network & Internet → Wi-FiThe switch must be in the "On" position. - 🍎 macOS: Click on the Wi-Fi icon in the top bar → “Turn on Wi-Fi” (if gray).
- 🐧 Linux (Ubuntu/Debian): In the terminal, enter
nmcli radio wifi. If the answer isdisabled- turn on with the commandnmcli radio wifi on.
If the switch is grayed out and unresponsive, the problem is deeper: the adapter itself may be disabled or the drivers may be missing. Proceed to the next section.
2. Device Manager: Checking the Wi-Fi adapter and drivers
If Wi-Fi doesn't turn on or isn't showing up in the list of adapters, the problem is most likely with the drivers or a hardware issue with the device. Open device Manager:
- 🖥️ In Windows: click
Win + X→ select "Device Manager". - 🍎 In macOS: Open About This Mac → System Report → Network → Wi-Fi.
IN Windows Find the "Network adapters" section and check:
- 🔍 Is there a device with words in the list? Wireless, Wi-Fi or 802.11 (For example, Intel Wi-Fi 6 AX200 or Qualcomm Atheros QCA61x4).
- ⚠️ If there is an exclamation mark next to the adapter, the driver is not working correctly.
- 🔄 If the adapter is not present at all, it is either disabled or not recognized by the system.
To enable the adapter:
- Right-click on it → “Enable”.
- If this does not help, update the driver: right-click → “Update driver” → “Search automatically”.
- If the automatic search does not work, download the driver from the website of the laptop/adapter manufacturer (for example, Intel, Realtek or Broadcom).
How can I find out the model of my Wi-Fi adapter if it's not detected?
Open Command Prompt (Win + R → enter cmd → Enter) and run the command:
wmic nic where "NetConnectionStatus=2" get Name, Manufacturer
If the adapter is disabled, use:
wmic nic get Name, Manufacturer, NetConnectionStatus
Look for lines in the output with Wireless or Wi-Fi.
⚠️ AttentionIf Wi-Fi is completely gone after updating the driver, roll back to the previous version. In Device Manager, click on the adapter → "Properties" → "Driver" → "Roll Back Driver."
3. Resetting network settings: when nothing helps
If Wi-Fi is listed but won't connect (or connects without internet access), reset your network settings. This will delete all saved networks and restore factory settings.
IN Windows 10/11:
- Open
Settings → Network & Internet → Status. - Scroll down and tap Network Reset → Reset Now.
- Restart your computer.
IN macOS:
- Open Terminal (
Command + Space→ enterTerminal). - Enter the commands one by one:
sudo ifconfig en0 downsudo ifconfig en0 up(replace
en0to your adapter, if it is different, you can find out with the commandnetworksetup -listallhardwareports). - Restart your Mac.
IN Linux (Ubuntu/Debian):
sudo systemctl restart NetworkManager
Make sure the router is turned on and distributing Wi-Fi.
Check that the red/orange error indicator on the router is not lit.
Reconnect to the network by entering the password
Update the IP address (on Windows: ipconfig /release → ipconfig /renew)
Check if your antivirus is blocking the connection (disable it temporarily)
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4. Router Problems: How to Check and Reboot
If everything is fine on your computer, but Wi-Fi still isn't working, the router is to blame. The first thing to do is: reboot itUnplug the router for 30 seconds, then plug it back in. Wait 1–2 minutes for it to boot up.
If rebooting doesn't help, check:
| Symptom | Possible cause | Solution |
|---|---|---|
| There is Wi-Fi, but no internet access. | There are problems with the provider or the tariff has not been paid | Call your provider's support team or check your personal account. |
| The network is visible but cannot be connected (authentication error) | Incorrect password or router settings are corrupted | Check your password or reset your router to factory settings (button Reset) |
| Wi-Fi drops out periodically | Channel congestion or interference from other devices | Change the Wi-Fi channel in the router settings (with Auto on 6 or 11) |
| The network is not visible at all (even on other devices) | Wi-Fi is disabled on the router or there is a firmware error. | Go to the router settings via cable and check the section Wireless |
To access your router settings:
- Connect your computer to the router via cable (if Wi-Fi does not work).
- Open your browser and type in the address bar
192.168.0.1or192.168.1.1(the address is indicated on the router sticker). - Enter your login and password (usually
admin/adminoradmin/password). - Check the section
WirelessorWi-Fi— is the wireless module enabled?
⚠️ AttentionIf Wi-Fi doesn't appear after resetting the router, the firmware may be corrupted. In this case, you'll need to reflash the device. TFTP-server (look for instructions for a specific router model).
5. Software conflicts: antiviruses, VPNs, and firewalls
Sometimes Wi-Fi is blocked by security or network optimization programs. The most common culprits are:
- 🛡️ Antiviruses (Kaspersky, Avast, ESET) - may block the connection as "suspicious".
- 🌍 VPN clients (NordVPN, ProtonVPN) - sometimes reset network settings.
- 🔥 Windows Firewall or macOS - may block new networks.
- 🔄 Download managers (Internet Download Manager, uTorrent) - sometimes change network parameters.
To check:
- Temporarily disable your antivirus (right-click on the tray icon → “Pause protection”).
- Disable VPN (if used).
- IN Windows check your firewall:
Control Panel → Windows Firewall → Allow an app to interact with this app. - IN macOS Open System Preferences → Security & Privacy → Firewall.
If Wi-Fi works again after disabling programs, add your network to the exceptions list in your antivirus or firewall.
6. Hardware problems: how to check your Wi-Fi adapter
If none of the methods helped, the problem may be ironThis is relevant for:
- 💻 Laptops after a fall or liquid spill.
- 🖥️ Desktop PCs with external USB adapters (e.g. TP-Link TL-WN725N).
- 🔌 Devices that have not been used for a long time (oxidation of contacts).
How to diagnose:
- Check the adapter on another deviceIf it's a USB adapter, connect it to another computer. If it's a built-in module in your laptop, try connecting via your phone (by sharing Wi-Fi from it).
- Check if the adapter is detected in the BIOS.. Restart your computer, go to BIOS (
Del,F2orEscwhen booting) and check the sectionAdvanced → Onboard DevicesIf the adapter is missing, it is faulty or disabled at the motherboard level. - Check your contactsIf it's a USB adapter, carefully clean the contacts with an eraser. If it's a built-in adapter, try reconnecting the antennas (in laptops, they're usually located under a cover on the back panel).
If the adapter is faulty, it will need to be replaced. For laptops, these are form factor modules. M.2 2230 (For example, Intel AX200), for PC - PCIe cards (for example, TP-Link Archer TX3000E) or USB adapters.
⚠️ Attention: On some laptops (eg. Apple MacBook or Microsoft SurfaceThe Wi-Fi module is soldered to the motherboard. In this case, repair is only possible at a service center.
7. Alternative connection methods if Wi-Fi doesn't work
While you're looking for a solution, you can temporarily connect to the internet in other ways:
- 📶 Mobile InternetShare Wi-Fi from your phone (in Android: "Settings → Hotspot & tethering", in iPhone: "Settings → Tethering mode").
- 🔌 Cable connectionConnect your computer to the router via Ethernet-cable (even if Wi-Fi doesn't work, the cable usually works).
- 🔄 Powerline adaptersIf the router is far away, use adapters that transmit the Internet via electrical wiring (for example, TP-Link TL-PA4010).
- 📡 4G/5G modem. USB modems (Huawei E3372, ZTE MF833V) connect like a flash drive and provide Internet without a router.
If you urgently need internet for work and your Wi-Fi connection is not working, consider purchasing external USB adapter (from 500 rubles). This is a temporary solution, but it will save time on diagnostics.
FAQ: Frequently asked questions about lost Wi-Fi
🔹 Why is there Wi-Fi on my phone but not on my computer?
This means the problem is with your computer, not your router. Check:
- Is the Wi-Fi adapter enabled in the system (see Section 2).
- Is your antivirus or firewall blocking the connection?
- Are the adapter drivers updated?
Also try forget the network on the computer and reconnect.
🔹 What should I do if Wi-Fi connects but there's no internet access?
This problem is usually related to settings. IP or DNS. Try:
- IN Windows Open command prompt and type:
ipconfig /releaseipconfig /renew
ipconfig /flushdns - Check your settings
IP:- Go to
Control Panel → Network and Internet → Network and Sharing Center → Change adapter settings. - Right-click on your Wi-Fi → “Properties” → “Internet Protocol Version 4 (TCP/IPv4)” → “Properties”.
- Make sure that the "Obtain an IP address automatically" and "Obtain DNS server address automatically" boxes are checked.
- Go to
DNS manually: 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare).If the problem persists, reboot the router or call your provider.
🔹 Can a virus cause Wi-Fi to disappear?
Yes, some viruses (Trojan.Win32.NetFilter, AdLoad) change network settings or block connections. Signs of infection:
- Wi-Fi disappears after visiting certain websites.
- An unfamiliar advertisement appears in the browser.
- The antivirus issues warnings about network attacks.
What to do:
- Scan the system Malwarebytes or Dr.Web CureIt.
- Check the file
hosts(V Windows it lies along the wayC:\Windows\System32\drivers\etc\hosts) - there should be no extraneous entries. - Reset network settings (see Section 3).
🔹 How to connect to Wi-Fi without a password (if you forgot it)?
If you've forgotten your network password, but have previously connected to it on this computer, you can find it out:
In Windows:
- Open Command Prompt (
Win + R→cmd). - Enter:
netsh wlan show profile name="NETWORK_NAME" key=clear(replace
NETWORK_NAMEto the name of your Wi-Fi). - Find the line “Key Contents” - this is the password.
On macOS:
- Open Keychain Access (
Command + Space→ enter "Keychain Access"). - Find your network in the list → double-click → check the box “Show password”.
If the computer has not connected to the network before, reset the password on the router (button Reset).
🔹 Why is my Wi-Fi slow or constantly dropping out?
Reasons for unstable Wi-Fi:
| Cause | Solution |
|---|---|
| Channel congestion (many devices) | Disable unnecessary gadgets or limit their speed in your router settings. |
| Interference from other networks | Change the Wi-Fi channel in the router settings (with Auto on 1, 6 or 11) |
| Weak signal | Move your router closer or use a repeater (TP-Link RE305) |
| Outdated router firmware | Update the firmware via the router's web interface |
| Restriction from the provider | Call support and check if your traffic limit is in effect. |
Also, check if the router is overheating—overheating can cause disconnections. If the casing is hot, let it cool down or move it to a ventilated area.