My computer can't find Wi-Fi: What to do if the network has disappeared or isn't showing up

You turned on your laptop or PC, but the list of available networks is empty. Or the one you need Wi-Fi There's an adapter, but it won't connect. This situation is familiar to many: either a driver crashed, the router is glitching, or Windows decided to update at the most inopportune moment. In 90% of cases, the problem can be solved independently—without calling a technician or buying a new adapter.

This article - A step-by-step guide with proven methods, from simple (rebooting the router) to complex (manually setting channels and encryption)We'll look at why your computer can't detect Wi-Fi, even if other devices are connected normally, and what to do about it. All instructions are relevant for Windows 10/11, macOS and most router models (TP-Link, ASUS, Keenetic, MikroTik and others).

Before you begin setting up, please answer two questions: 1. Do other devices (smartphone, tablet, second computer) see the Wi-Fi? 2. Did the problem appear after updating Windows, installing programs, or changing router settings?

The answers will help narrow down the causes and save time.

1. Checking basic settings: router, adapter, airplane mode

Start with the obvious—sometimes a problem can be solved in 30 seconds. Here's what to do. first of all:

• 🔄 Reboot your router. Unplug it for 20-30 seconds, then plug it back in. Wait until it fully boots up (the indicators should be steady).
• 📶 Make sure Wi-Fi is turned on on your router. Most models have a physical button. Wi-Fi or WPS - Check if it's accidentally disabled. On some routers (Keenetic, Zyxel) Wi-Fi is disabled via the web interface.
• ✈️ Check the airplane mode on your computer. IN Windows click Win + A and make sure that the airplane mode (On the plane) is turned off. On macOS - open Control Center (icon in the upper right corner).
• 🔌 Check the power of the Wi-Fi adapter (for PC). If you have a desktop computer with an external USB adapter, try connecting it to a different port or replacing the cable.

If Wi-Fi returns after rebooting the router, the issue was a temporary hardware failure. If not, proceed to the next step.

2. Diagnosing a Wi-Fi adapter in Windows

If the router is working, but the computer does not find any networks, the problem may be in Wi-Fi adapterHere's how to check it:

1. Open Device Manager.

   Click Win + X → select device Manager.

   Find the section in the list Network adapters.

2. Check the adapter status.

   If next to the adapter name (for example, Intel Wi-Fi 6 AX200 or Qualcomm Atheros QCA9377) the icon is lit exclamation mark or down arrows, this means that the driver is not working properly or is disabled.

3. Turn on the adapter (if disabled).

   Right click on the adapter → select Activate the device.

If the adapter is enabled but networks are still not visible, try update driver:

4. Right-click on the adapter → Update driver → Automatic search.
5. If Windows does not find the update, download the driver from the website of the laptop or adapter manufacturer (for example, Intel, Realtek, Broadcom).

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⚠️ Attention: If in Device Manager no section Network adapters or the Wi-Fi adapter is not listed, this may mean hardware failure (For example, a broken antenna on a laptop). In this case, repairs will be required.

3. Configuring Wi-Fi settings in Windows

Sometimes Windows "forgets" network settings or blocks the connection due to a setting conflict. To fix this:

• 🔧 Reset network settings.

  Go to Settings → Network & Internet → Status → Network reset.

  Click Reset now and confirm the action. The computer will restart.

• 📡 Check your adapter settings.

  Open Control Panel → Network and Internet → Network and Sharing Center → Change adapter settings.

  Find Wireless network, right-click → Properties → Tune → tab Additionally.

  Make sure the parameter Beacon Interval (beacon interval) is set to 100, A Roaming Aggressiveness (roaming aggressiveness) - in 3. Average.

• 🔒 Disable MAC address filtering (if enabled).

  Some routers block devices by MAC address. Go to the router's web interface (usually 192.168.0.1 or 192.168.1.1) and check the section Wireless MAC Filter.

If after resetting the Wi-Fi network the connection appears, but it is unstable (it often drops), try manually specify DNS:

1. Open Settings → Network & Internet → Wi-Fi → Manage known networks.
2. Select your network → Properties → scroll to IP settings.
3. In the section DNS servers select Manually and add: 8.8.8.8 (Google DNS) and 1.1.1.1 (Cloudflare DNS).

4. Checking router settings

If other devices see Wi-Fi but your computer doesn't, the problem may be incompatible router settings. Go to the router's web interface (usually at 192.168.0.1 or 192.168.1.1, login/password — admin/admin or indicated on the sticker) and check the following parameters:

If you have recently changed your router settings (for example, turned on WPA3 or 802.11r Fast Transition), try resetting them to factory settings:

1. Log into your router's web interface.
2. Find the section System Tools → Backup & Restore (or Administration → Backup).
3. Click Factory Default or Reset to Default.

⚠️ Attention: Resetting your router to factory settings will erase all your personal settings, including your Wi-Fi password, linked devices, and firewall rules. After the reset, you'll need to set up internet access again (the login/password from the provider is usually specified in the contract).

5. Diagnostics on macOS

If Wi-Fi is not working on MacBook or iMacThe verification algorithm is slightly different. Start with the basic steps:

• 🍎 Restart your Mac. Sometimes this solves the problem with the adapter drivers.
• 🔍 Check your network settings.

  Open System Preferences → Network.

  Select Wi-Fi in the left menu and make sure the status is Connected or Active.

• 📱 Reset the network list.

  In the same window, click Additionally → Wi-Fi → remove your network from the list Preferred networks.

• 🛠️ Reset SMC and NVRAM.

  For MacBook with a chip Apple Silicon (M1/M2) reboot is enough.

  For Intel Mac:

  1. Shut down your Mac.
  2. Clamp Shift + Control + Option + power button for 10 seconds.
  3. Turn on your Mac.

If the problem persists, check Wi-Fi compatibility mode:

1. Open Terminal (Programs → Utilities → Terminal).
2. Enter the command:

   networksetup -setairportpower en0 off && networksetup -setairportpower en0 on

   (Where en0 — the name of your Wi-Fi adapter; to find it out, run networksetup -listallhardwareports).

Remove network from "Preferred Networks"|Reset SMC/NVRAM|Check for macOS updates|Restart router-->

6. Hardware problems: when to take it to a service center

If none of the methods helped, the problem might be hardwareHere are some signs that repairs are necessary:

• 💻 The Wi-Fi adapter is not detected in the system.

  IN Device Manager (Windows) or System information (macOS) adapter is missing or marked as Unidentified device.

• 🔌 The laptop does not see the network even after connecting an external USB adapter.

  This may indicate a problem with antenna cables or the south bridge of the motherboard.

• 🔥 The adapter overheats or shuts down after a few minutes of operation.

  Typical for older laptops (HP Pavilion, Lenovo IdeaPad (2015–2017 series) where the thermal paste on the Wi-Fi chip has dried out.

• 🛠️ There is visible physical damage on the motherboard (PC) or laptop.

  For example, a broken connector M.2 for the Wi-Fi module or traces of oxidation.

The cost of repair depends on the fault:

• Replacing the Wi-Fi module (for example, Intel AX200 or Broadcom BCM94360) — from 1,500 to 3,000 rubles
• Soldering work (replacing antennas, chips) - from 3,000 to 8,000 rubles
• Diagnostics at the service center is usual 500–1,000 rubles

⚠️ Attention: If you decide to replace the Wi-Fi module yourself, make sure the new module is compatible with your laptop model. For example, Dell Latitude series 7000 supports only modules with a connector M.2 2230 (key A+E). An incompatible module may not only not work, but also disable the motherboard.

7. Alternative ways to connect to the Internet

While you're looking for a solution to your Wi-Fi problem, you can connect to the internet in other ways:

• 📱 USB tethering from a smartphone.

  Connect your phone via USB and turn it on. Modem mode (on Android - V Settings → Network & Internet → Access Point, on iPhone - V Settings → Tethering).

• 🔌 Ethernet cable.

  Connect your computer to the router directly using a network cable (LAN). The speed will be higher than via Wi-Fi.

• 📡 Powerline adapter.

  Devices of the type TP-Link AV600 They transmit internet through electrical wiring. Connect one adapter to the router, the other to the computer, and connect them with a cable.

• 🌐 Public Wi-Fi.

  If you urgently need the Internet, connect to the nearest open network (for example, in a cafe or library). Do not use such networks for banking transactions!

If you have chosen USB tethering, please note:

• On Android may need to be enabled USB debugging (Settings → For developers).
• Some operators (eg. MTS, Beeline) limit tethering speed or charge extra for it. Check your plan in your personal account.

FAQ: Frequently Asked Questions about Wi-Fi Problems

Why doesn't the laptop see Wi-Fi, but the phone does?

This is a sure sign of a problem with Laptop Wi-Fi adapter or its drivers. Possible causes:

• The adapter driver crashed after a Windows update.
• The adapter is disabled in Device Manager or through Fn keys (on some laptops, for example, Lenovo, Wi-Fi is turned off by a combination Fn + F2).
• The adapter is operating in power saving mode (check your power settings).
• The router uses the standard 802.11ac or Wi-Fi 6, and your adapter does not support it (relevant for old laptops before 2015).

Start with reinstalling drivers and checking the router settings (section Wireless Mode).

How do I turn on Wi-Fi on a laptop if there is no button?

If your laptop doesn't have a physical Wi-Fi button or switch, try these methods:

1. Keyboard shortcut.

   On most laptops, Wi-Fi is turned on with a combination Fn + one of the F1–F12 keys (usually with an antenna icon). For example:

   • HP: Fn + F12
   • Lenovo: Fn + F5 or Fn + F7
   • ASUS: Fn + F2
   • Acer: Fn + F3

Via Windows.

Click Win + A → find the tile Wi-Fi and turn it on.

In BIOS/UEFI.

It's rare, but it can happen that Wi-Fi is disabled at the BIOS level. Enter the BIOS (press [Enter] during boot) F2, Del or Esc) and find the section Advanced → Wireless LAN (should be Enabled).

Is it possible to connect to Wi-Fi without a password if the computer has "forgotten" it?

Yes, there are several ways:

1. View password on another device.

   On Android: open Settings → Wi-Fi, tap on your network → Share (PIN or fingerprint required).

   On iPhone: go to Settings → Wi-Fi, tap on i next to the network - the password will be displayed after authentication Face ID/Touch ID.

2. Recover password via router.

   Go to the router's web interface (192.168.0.1 or 192.168.1.1) → section Wireless → Wireless SecurityThe password will be in the field. PSK Password.

3. Use Windows backup.

   If you previously created a system restore point, you can roll back your network settings. Open Control Panel → Recovery → Open System Restore.

⚠️ Warning: Do not use Wi-Fi hacking programs (eg. Aircrack-ng or Wifi Hacker). This illegally and may result in your MAC address being blocked on the network.