Computer Can't Detect Wi-Fi: All Causes and Solutions (2026)

You've enabled Wi-Fi on your laptop or PC, but the list of available networks is empty. Or the desired network is present, but you can't connect. This situation is familiar to every second user, and there are dozens of possible causes, ranging from a simple disabled adapter to serious driver errors. In this article, we'll explore these issues. all possible reasons, why the computer does not see the wireless network, and we will give step-by-step instructions For Windows, MacOS, and Linux. No fluff—just solutions that work.

Important: If the problem occurred after updating the system, installing new software, or changing router settings, Start with the section on drivers and network settingsIf Wi-Fi suddenly disappears for no apparent reason, first check the hardware. And if the network is only unavailable on one device, while the others connect normally— In 90% of cases, the computer itself is to blame, not the router..

We won't offer "rebooting the router" as a universal solution. Instead, we'll provide specific steps and explanations of why they work. We'll start with the simplest and work our way up to more complex cases.

1. Checking the physical condition of the Wi-Fi adapter

The first thing to rule out is hardware malfunctionsEven if everything worked yesterday, the adapter could have shut down due to mechanical impact, overheating, or a power surge.

On laptops, the Wi-Fi module is often connected via mini-PCIe or M.2 Connector. If you've recently dropped the device, disassembled it, or cleaned it of dust, check to see if the connector has come loose. On desktop PCs, the adapter may be external (USB) or internal (plugged into the motherboard). Make sure it's firmly seated in the slot.

• 🔌 Laptop: Locate the Wi-Fi button or switch on the case (often near the keyboard or on the side panel). On some models Lenovo, HP And Dell there is a separate key Fn + F2/F5/F12 to turn on the module.
• 🖥️ Desktop PC: If you are using a USB adapter, try reconnecting it to a different port. Check the internal adapter via device Manager (more on this below).
• 🔍 Indicators: The LED on the laptop or adapter should be lit (or blinking). If it's not lit, the module isn't receiving power.

⚠️ Note: On some laptops ASUS And Acer Wi-Fi turns off automatically when an Ethernet cable is connected. Check the BIOS settings (section Advanced → Wireless LAN Control).

2. Diagnostics via Windows Network Settings

If the adapter is physically intact, but the network still isn't showing up, check your OS settings. In Windows 10 and 11, this can be done via Settings → Network and Internet → Wi-Fi.

First, make sure your wireless network is turned on:

1. Click Win + I → select "Network and Internet".
2. In the section Wi-Fi The switch should be in the "On" position. If it's gray, the adapter is disabled at the system level.
3. Click "Show available networks." If the list is empty, the problem is deeper.

If the switch is active but there are no networks, try run the troubleshooter:

1. In the same window, click "Network Troubleshooting".
2. Follow the wizard's instructions. It will check your drivers, IP settings, and connection to the router.

Is Wi-Fi enabled in Windows Settings?

Did you run the troubleshooter?

Have you tried restarting your computer (yes, that sometimes helps)?

Have the physical connections of the adapter been checked?

If the diagnostic tool returns an error "Wireless network is disabled" or "Unable to connect to this network" — proceed to the next section about drivers.

3. Update or reinstall Wi-Fi drivers

In 60% of cases the problem lies in adapter driversThey could have crashed after a Windows update, conflicted with other software, or simply become outdated. Let's look at three solutions.

Method 1: Automatic update via Device Manager

1. Click Win + X → select "Device Manager".
2. Expand the "Network adapters" branch.
3. Find the device with the words Wireless, Wi-Fi or 802.11 (For example, Intel Wi-Fi 6 AX200 or Qualcomm Atheros QCA9377).
4. Right-click → "Update driver" → "Search automatically".

Method 2: Manual installation from the manufacturer's website

If the automatic search doesn't help, download the driver from the official website:

• 🔧 For Intel: Intel Driver & Support Assistant (will determine the adapter model and offer the current version).
• 🔧 For Qualcomm Atheros, Broadcom, Realtek: search by adapter model on the laptop manufacturer's website (Lenovo, HP etc.).
• 🔧 For external USB adapters (e.g. TP-Link TL-WN725N) - download the driver from the website TP-Link.

Method 3: Roll back the driver

If the problem appeared after the update:

1. In Device Manager, right-click on the adapter.
2. Select "Properties" → "Driver" tab.
3. Click "Rollback" (if the button is active).

⚠️ Attention: After reinstalling the drivers Be sure to restart your computerSome changes only take effect after a reboot.

4. Power settings and saving modes

Windows by default tries to save power by turning off unused devices. This sometimes leads to self-disabling the Wi-Fi adapter, especially on laptops. This can be corrected manually.

Instructions for Windows 10/11:

1. Open device Manager (Win + X → Device Manager).
2. Expand "Network adapters" and find your Wi-Fi module.
3. Right-click → "Properties" → "Power Management" tab.
4. Uncheck the box "Allow the computer to turn off this device to save power".
5. Click "OK" and restart your computer.

For users MacBook:

1. Open "System Preferences" → "Energy Saver".
2. Make sure the "Slightly dim the display when on battery" option does not affect Wi-Fi (sometimes it indirectly disables the module).

Also check power plan:

1. Click Win + R, enter powercfg.cpl.
2. Select the "High Performance" plan (if it doesn't exist, create a new one).
3. Click "Change plan settings" → "Change advanced power settings".
4. Find the "Wireless adapter settings" section → set to "Maximum performance".

5. Checking BIOS/UEFI settings

If your Wi-Fi adapter isn't showing up even in Device Manager, it may be disabled at the BIOS level. This is common on desktop PCs and some laptops (especially after resetting the BIOS settings or updating the firmware).

How to check:

1. Restart your computer and enter the BIOS (usually the key Del, F2 or Esc when loading).
2. Find the section Advanced, Onboard Devices or Wireless.
3. Look for parameters like:
   • Wireless LAN Support → should be Enabled;
   • Onboard Wi-Fi or WLAN → Enabled;
   • PCIe/PCI Subsystem Settings → Check if the slot to which the adapter is connected is disabled.

Save changes (F10) and reboot.

⚠️ Note: On some motherboards ASRock And Gigabyte The Wi-Fi module can be linked to a specific PCIe slotIf you recently added new hardware (such as a video card), the adapter may have automatically disabled.

What to do if you can't enter BIOS?

If the BIOS entry key does not work (for example, due to Windows fast boot), try:

1. Clamp Shift when you click "Restart" in the Start menu.

2. Select "Troubleshoot" → "Advanced options" → "UEFI Firmware Settings".

3. After rebooting, you will find yourself in BIOS without pressing any keys.

6. Conflicts with other programs and services

Sometimes Wi-Fi doesn't work because conflicts with software, especially if you use:

• 🛡️ Antiviruses (Kaspersky, Avast, ESET - they can block network connections);
• 🔄 VPN clients (NordVPN, OpenVPN, ProtonVPN — change routing);
• 🎮 Programs for game optimization (Razer Cortex, WTFast);
• 🔧 Network management utilities (NetBalancer, cFosSpeed).

How to diagnose:

1. Start Windows in Safe Mode with Networking:
   • Click Win + R, enter msconfig.
   • Go to the "Boot" tab → check "Safe Mode" → "Network".
   • Reboot. If Wi-Fi works again, third-party software is to blame.
2. Check Windows services:
   • Click Win + R, enter services.msc.
   • Find services:
     • WLAN AutoConfig (must be "Running");
     • Network List Service;
     • WinHTTP Web Proxy Auto-Discovery Service.

If they are stopped, right-click → "Start".

If the problem is with the antivirus:

1. Temporarily disable network protection in your antivirus settings.
2. Add your Wi-Fi network to the firewall exceptions.
3. Try to completely remove the antivirus (for example, through Revo Uninstaller) and check the connection.

7. Problems on the router side

If none of the previous solutions helped, the problem may not be with your computer, but with router settingsCheck the following points:

1. Wi-Fi operating mode (2.4 GHz vs 5 GHz)

• 📶 Old adapters (before 2015) may not support networks 5 GHz.
• 📶 Some routers (for example, TP-Link Archer C6) are hidden by default 2.4 GHz network, if enabled 5 GHz.
• 📶 Solution: Go to your router settings (192.168.0.1 or 192.168.1.1) and check if both ranges are enabled.

2. Hidden network (SSID)

If the network list is empty, but other devices connect:

• 🕵️ It's possible that the router has the mode enabled Hide SSID.
• 🕵️ Solution: Connect to the router via cable, go to settings and disable the option "Hide SSID" or Hide Network.

3. Filtering by MAC address

Some routers (eg. Keenetic or MikroTik) block connections from unknown devices:

• 🔒 Check the section in your router settings MAC Address Filter or Access Control.
• 🔒 If filtering is enabled, add your computer's MAC address to the list of allowed addresses.

4. Channel and channel width

In densely populated areas, Wi-Fi channels can become congested. Try changing the channel manually:

1. Go to your router settings.
2. Find the section Wireless or Wi-Fi.
3. Change it Channel on 6 or 11 (For 2.4 GHz) or 36-48 (For 5 GHz).
4. Install Channel Width V 20 MHz (for stability).

⚠️ Please note: Router interface details vary by model and firmware. The exact paths to settings may vary. For official instructions for your model, please visit the manufacturer's website.

8. Alternative solutions for advanced users

If standard methods don't work, try these approaches. They require a little more effort, but they often help in complex cases.

1. Reset Windows network settings

1. Open Settings → Network & Internet → Status.
2. Scroll down and click Network Reset.
3. Confirm the action and restart your computer.

⚠️ Note: This will delete all saved networks and VPN connections. You'll need to set them up again after the reset.

2. Manual DNS assignment

Sometimes the problem lies with your provider's DNS servers. Try using public DNS from Google or Cloudflare:

1. Open Control Panel → Network and Internet → Network and Sharing Center.
2. Click on your connection → "Properties" → "Internet Protocol Version 4 (TCP/IPv4)" → "Properties".
3. Check the box "Use the following DNS server addresses".
4. Enter:
   • For Google: 8.8.8.8 And 8.8.4.4;
   • For Cloudflare: 1.1.1.1 And 1.0.0.1.

3. Checking via the command line

Launch Command prompt as administrator (Win + X → Command Prompt (Administrator)) and execute the commands one by one:

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

After each command, restart your computer.

4. Virus check

Some viruses (eg Trojan.Win32.DNSChanger) change network settings. Scan the system:

• 🛡️ Kaspersky Virus Removal Tool (portable version);
• 🛡️ Dr.Web CureIt!;
• 🛡️ Malwarebytes (to search for spyware).

How can I check if my antivirus is blocking my network connections?

1. Open the antivirus log (for example, in Kaspersky this is "Reports → Event Log").

2. Look for records of blocked connections to your router (the IP address is usually 192.168.x.x).

3. If such entries exist, add the router's IP to the exceptions.

FAQ: Frequently Asked Questions about Wi-Fi Issues

🔹 Why doesn't my laptop detect Wi-Fi, but my phone does?

This means the problem is on the computer side. The most likely causes are:

• The Wi-Fi adapter is disabled (physically or in the settings);
• Outdated/corrupted drivers;
• Conflict with antivirus or VPN;
• The adapter does not support the router frequency (for example, the router operates at 5 GHz, and the adapter is only on 2.4 GHz).

Start by checking your adapter drivers and settings (sections 3 and 4 of this article).

🔹 How do I know what Wi-Fi adapter I have?

There are three ways:

1. Via Device Manager:
   • Click Win + X → Device Manager;
   • Expand the "Network adapters" branch;
   • Find the device with the words Wireless, Wi-Fi or 802.11.

Via command line:

• Launch Command line;
• Enter ipconfig /all;
• Look for the line "Description" next to Wireless LAN Adapter.
• Via utilities: Programs like HWiNFO or Speccy will show the adapter model and its characteristics.

🔹 Could the problem be with the router if other devices connect?

Yes, but rarely. Possible scenarios:

• MAC address filtering: The router may block your computer if its MAC address is not on the white list;
• Device limit: Some routers (especially from providers) limit the number of connected gadgets;
• Incompatibility of standards: For example, the router operates in the mode 802.11ac, and your adapter only supports 802.11n;
• Hidden network (SSID): If the "Hide network" mode is enabled in the router, the computer will not see it in the list, but the phone may connect automatically.

Check your router settings (section 7 of the article).

🔹 What should I do if Wi-Fi disappears after waking up from sleep?

This is a power management issue. Solutions:

1. Disable permission to turn off the adapter to save power (section 4);
2. Update your Wi-Fi adapter driver (section 3);
3. Turn it off quick launch Windows:
   • Open Control Panel → Power Options;
   • On the left, select "Choose what the power buttons do";
   • Click "Change settings that are currently unavailable";
   • Uncheck "Turn on fast startup".

Check your BIOS settings (section 5) - sometimes there are options like "Wake on Wireless LAN", which need to be included.

🔹 How do I connect to Wi-Fi if the network isn't visible, but I know its name?

You can connect manually:

1. Open Settings → Network and Internet → Wi-Fi;
2. Click "Manage known networks" → "Add new network";
3. Enter the network name (SSID), select the security type (WPA2-Personal or other) and password;
4. Check the box "Connect automatically".

If the network is hidden (SSID hidden), this method will work in 99% of cases.