Many home users are familiar with the situation where the computer's internet connection works via a cable, but wireless devices don't see the network. Often, the problem lies not with the ISP, but with incorrect router settings or a simple disconnected wireless module. To avoid calling a technician for a basic check, it's important to know how to verify that the device is transmitting a signal.
In this guide, we'll cover all available diagnostic methods: from visual inspection of the case to in-depth configuration analysis via the web interface. You'll learn to distinguish a hardware failure from a software error and understand why your Wi-Fi module can be hidden from prying eyes. This will help quickly restore network access without unnecessary costs.
Sometimes the front panel indicators don't behave as described in the instructions, or don't light at all due to burned-out LEDs. In such cases, external indicators can't be relied upon, and a software check is required. We'll discuss how to find a network, even if it's hidden, and what to do if the device stops responding to connection requests.
Visual assessment of indicators and physical condition
The first step in diagnostics should always be a visual inspection of the equipment. Most modern router models, whether TP-Link, ASUS or Keenetic, are equipped with a set of LED indicators that signal the operating status. We are interested in the light marked as WLAN, Wi-Fi or depicted as a wave. If it's lit or flashing, it's a sure sign that the radio module is active and transmitting data.
However, don't rely blindly on the indicators. In cheaper models, the LEDs are often powered directly by the module's power supply rather than controlled by the device's logic. This means the indicator light may remain on even if there's a software glitch, even though the distribution has actually stopped. Also, pay attention to the antennas: if they're removable, make sure they're securely screwed in. A poor antenna connection can create the illusion of operation, even though the actual coverage range is only a few centimeters.
⚠️ Attention: If the Wi-Fi indicator does not light at all, try restarting the device using the button
Poweror by unplugging the power cord for 10 seconds. Prolonged operation without interruption can cause the router's memory buffer to overflow, causing it to stop broadcasting the network while maintaining cable access.
There is also a specific situation when the indicator lights up WPS, but the main wireless network indicator is off. In some firmware versions, this may indicate active pairing mode, which temporarily blocks normal wireless access. A visual inspection is only a first step in eliminating obvious physical faults, but software methods are required for an accurate diagnosis.
Searching for a network via a smartphone and laptop
The most reliable way to check if a signal is working is to try to detect it using a client device. Take your smartphone and go to the wireless settings. The list of available networks is updated automatically, but to ensure a clean test, it's best to turn Wi-Fi off and then back on again on your phone. If your network name (SSID) is listed, the router is functioning properly.
Things are more complicated if the network is hidden. For security reasons, many users enable the feature Hide SSID, which removes the network name from the public list. In this case, you'll only see untrusted networks or an empty list on your smartphone screen. To check for a hidden network, manually add a new connection by entering the exact name and password. If the connection is successful, the router is functioning properly.
Checking from a laptop provides additional information. In the operating system Windows In the lower right corner of the screen, there's a network icon. Clicking it will display a list of available hotspots. Note the lock icon: it means the network is password-protected, which is normal. If you see a network with an exclamation point or the status "No internet access," this indicates a problem higher up the radio level, such as in your provider's settings.
Analysis via the router's web interface
The most accurate information about the wireless module's status can be obtained by logging into the router's control panel. To do this, connect to the device via cable or, if possible, Wi-Fi. In the browser's address bar, enter the gateway IP address, usually 192.168.0.1 or 192.168.1.1After entering your login and password (often found on a sticker on the bottom of the case), the main menu will open.
You need to find the section responsible for wireless mode. Depending on the model and firmware version, it may be called Wireless, Wi-Fi Network, Wireless mode or WLANInside this section, look for a checkbox or switch titled Enable Wireless, Enable Radio or "Enable wireless broadcasting." If unchecked, the router will not physically distribute the internet, even if the ISP's cable is connected.
☑️ Checking Wi-Fi settings
Here, it's also worth paying attention to the channel and channel width settings. Sometimes the router becomes unavailable to older devices if automatic mode is selected and the router switches to standard mode. 802.11ax (Wi-Fi 6) is not supported by gadgets. Also, check if filtering by MAC addressesIf your phone isn't whitelisted, the router will ignore its connection requests, creating the illusion that there's no network.
⚠️ Attention: Firmware interfaces are constantly updated. Menu locations and item names may differ from those described. If you can't find the desired setting, refer to the official documentation from the manufacturer of your model or look for screenshots of the interface for your specific firmware version.
Command line diagnostics in Windows
For advanced users and system administrators, the operating system command line is an excellent tool. It provides detailed technical information about the status of network adapters and visible access points. To open the console, press Win + R, enter cmd and press Enter. The basic command for scanning the airwaves looks like this:
netsh wlan show networks mode=bssidThis command will list all detected wireless networks, detailed down to the BSSID (the access point's MAC address). The output will show the SSID, network type, encryption, and signal strength. If your router isn't listed, but is visible on other devices, the issue may be with your computer's network adapter driver. In this case, try updating the drivers via device Manager.
Another useful command allows you to check the status of the wireless adapter itself on your computer:
netsh wlan show interfacesIt is important to pay attention to the line here State (Condition). If it is indicated there disconnected or hardware not present, then the problem isn't with the router, but with your receiver. The command will also show the name of the connected network and the signal quality percentage. A low signal quality percentage when located close to the router may indicate severe interference or a faulty antenna.
What to do if the command doesn't work?
If the system reports that the WLAN AutoConfig service is not running, press Win+R, enter services.msc, find WLAN AutoConfig in the list, right-click, and select "Start." Without this service, Windows will not be able to manage Wi-Fi.
Specifics of operation in the 5 GHz range
Modern routers often operate in two bands: 2.4 GHz and 5 GHz. The 5 GHz band offers higher speeds but has less penetration and range. The key to checking this band is hardware support. If your smartphone or laptop is more than 5-7 years old, it may not physically support the standard. 802.11ac or 802.11ax.
As a result, the user sees the 2.4 GHz network but "doesn't see" the 5 GHz network, mistakenly concluding that the router isn't distributing the full Wi-Fi signal. This can be verified in the device's specifications or technical data sheet. Furthermore, the router's settings may combine the bands into a single SSID (Smart Connect technology). In this case, the device automatically selects which frequency to connect to, and the 5 GHz network may not be displayed separately.
| Parameter | 2.4 GHz band | 5 GHz band |
|---|---|---|
| Range | High (up to 100 m) | Low (up to 30-40 m) |
| Penetration of walls | Good | Bad |
| Device support | Almost everyone | Only modern ones |
| Speed | Up to 450 Mbps | Up to 1000+ Mbps |
| Workload | High (interference from neighbors) | Low (pure ether) |
If you've checked the settings and confirmed that the 5 GHz band is enabled, but older devices can't see it, this is normal behavior. To resolve the issue, you can try changing the security type or channel width in the router settings, although most often, simply allowing older devices to operate on the 2.4 GHz band is all you need to do.
Common reasons for Wi-Fi signal loss
If you've discovered that your router has stopped distributing internet via wireless, it's important to understand the cause. One common issue is overheating. Routers are mini-computers, and if they're poorly ventilated, they can go into protection mode, shutting down the power-hungry Wi-Fi module. Check the case: if it's hot, allow the device to cool and ensure adequate airflow.
Another cause is a firmware crash or IP address conflict. If a second router with the same address appears on the network, for example, 192.168.1.1This can cause chaos in the network. It's also worth checking whether the limit of connected clients has been reached. Budget models have a limit on the number of simultaneously connected devices (usually 10-15). If you have a smart home with dozens of sensors and light bulbs, the router may simply block new connections.
Sometimes the problem lies in electromagnetic interference. Microwave ovens, baby monitors, and Bluetooth headsets operate at 2.4 GHz and can jam the signal. Try moving the router away from other appliances. Also, check the integrity of the power supply: if the voltage is insufficient, the Wi-Fi module (as the most power-hungry component) shuts down first, leaving only the LAN ports working.
Why does the router see the network but not connect to the Internet?
This means the radio module is working (Wi-Fi is working), but there's no connection to the ISP. Check the WAN cable, authentication status (PPPoE, L2TP), and account balance. The issue could also be with the service provider.
Can a computer virus disable Wi-Fi on a router?
A virus can't directly disable a router module from a PC, but it can change DNS settings or block access to the web interface. In rare cases, malware can flood the channel with traffic, creating the illusion of a connection failure.
How can I check if my Wi-Fi has been hacked?
Go to the "Status" or "Client List" section of your router's web interface. If you see unfamiliar devices there, immediately change the Wi-Fi password and encryption type to WPA2/WPA3. It's also recommended to hide the SSID.
What to do if only 5 GHz is lost, but 2.4 GHz works?
Most likely, the router's range settings have become incorrect or a module has failed. Try rebooting the device. If that doesn't help, reset the settings to factory defaults (press the Reset button) and reconfigure. A firmware update may be required.
Does weather affect Wi-Fi performance?
Heavy rain, thunderstorms, or magnetic storms can affect radio wave propagation, especially over long distances or when using outdoor access points. Indoors, the weather's impact is minimal, but thunderstorms can damage equipment with power surges.