It's confusing and frustrating when a desktop computer's wired internet connection works perfectly, but all wireless devices suddenly lose connection. This is a classic scenario, indicating that the problem lies not with the ISP's line, but with the router's software or Wi-Fi hardware. Unlike a complete internet outage, this situation involves partial device functionality, significantly narrowing the range of potential causes.
More often wireless module the router freezes due to overheating, software failure or IP address conflict, while WAN port The antenna continues to transmit data reliably over the cable. Users often mistakenly blame the provider or buy new equipment, although in 90% of cases the situation can be fixed with a simple reboot or changing the settings in the web interface. It's important to understand the difference between physical damage to the antenna and software-based disabling of the radio module.
Before attempting complex repairs, it's important to rule out common factors, such as accidentally pressing the Wi-Fi off button on the device or a dead laptop battery that prevents it from detecting the network. In this article, we'll walk you through the steps, from simple diagnostics to firmware upgrades, so you can restore your home network without calling a technician.
Primary diagnostics and physical condition of equipment
The first step should always be a visual assessment of the router's status. Look at the indicators: if the light that indicates the wireless network (usually marked with an antenna symbol or the inscription WLAN/Wi-Fi), is off or red, meaning the module is deactivated or faulty. At the same time, the global connection indicator (Internet/WAN) should be green, confirming that the provider is sending a signal.
Sometimes the problem is temporary and related to overheating of the router's processor, which is responsible for transmitting the signal. If the device is exposed to direct sunlight, covered with papers, or stored in a closed cabinet, it may enter protection mode, disabling the most power-consuming functions, including Wi-Fi. In this case, allowing the equipment to cool for 15-20 minutes is sufficient.
⚠️ Caution: If the router's casing becomes very hot or emits a burning smell, unplug it immediately. Continued use may cause a fire or complete failure of the circuitry.
It is also worth checking whether the physical Wi-Fi off button, which is present on some models, was accidentally pressed, for example, TP-Link or AsusHolding this button for a long time can block the airwaves, and even after releasing it, the signal won't reappear without rebooting. Make sure the antennas are tightly screwed into the connectors, as poor contact can also cause the network to disappear.
For a more thorough check, you can connect your computer to the router via a LAN cable and attempt to access the control panel. If the web interface opens and displays the connection status, the device's operating system is functioning correctly. If the page doesn't load, there may be a problem with the network settings on your computer's card or the router itself.
Soft reset and system reboot
The most effective and often overlooked solution to the problem is a complete hardware reboot. Don't confuse a simple power-off with a software reboot, which clears RAM and resets frozen processes. Many modern routers, such as Keenetic or MikroTik, have a "Restart" button in the interface, which performs this function more safely than pulling the cord out of the socket.
If you can't access the interface, use a cold boot: turn off the device, unplug the power supply for 30-60 seconds, and then turn it back on. This will allow the capacitors inside the device to fully discharge, which will clear any errors in the memory. After turning it on, wait 2-3 minutes for the router to fully boot and attempt to start all services.
In some cases, a factory reset can help. This is a drastic method that will erase all your passwords and provider settings, so it's only worth trying if other methods fail. A recessed button is used for this. Reset on the back panel, which needs to be held with a paper clip for about 10-15 seconds until all the indicators blink.
☑️ Checklist before resetting settings
After resetting, the router becomes a blank slate and will begin broadcasting the network using the factory name indicated on the sticker underneath. You will need to reconfigure the connection type (PPPoE, L2TP, or Dynamic IP) using the details in your ISP contract. This ensures that there are no remaining software errors blocking the module's operation.
Checking wireless settings in the web interface
If rebooting doesn't help, you'll need to delve into your router's settings. Log in to the control panel by entering the device's IP address (often 192.168.0.1 or 192.168.1.1). In the menu, find the section responsible for the wireless network, which may be called Wireless, Wi-Fi Network or "Wireless Mode".
First, check that the "Enable Wireless" box is checked. This setting can sometimes reset to "Off" after a firmware update or power surge. Also, pay attention to the channel and channel width settings: automatic selection can sometimes cause conflicts with neighboring networks.
| Parameter | Recommended value | Description of the impact on the network |
|---|---|---|
| Operating mode (Mode) | 11b/g/n mixed or Auto | Ensures compatibility with old and new devices |
| Channel | Auto or 1, 6, 11 | Reduces interference from neighboring routers |
| Channel width | 20 MHz (for 2.4 GHz) | Increases signal stability in apartment buildings |
| Signal strength | High / 100% | Maximizes coverage radius if there is no need to limit it |
The security standard deserves special attention. If you're using an outdated encryption protocol, WEP or mixed mode WPA/WPA2, some modern smartphones may simply refuse to connect, creating the illusion that there is no network. It is recommended to set a strict WPA2-PSK (AES) or WPA3, if the devices support this standard.
What is a DHCP server and why is it important?
The DHCP server automatically assigns IP addresses to all devices on the network. If this feature is disabled in the router settings, your devices will not be able to obtain an address or connect to Wi-Fi, even if the network is visible and the password is entered correctly. Make sure the DHCP server is enabled in the LAN/DHCP section.
IP address conflicts and DHCP server operation
One of the hidden reasons why a router stops distributing internet over the air is exhaustion of the DHCP server's address pool. Each connected device receives a unique IP address. If a home has many gadgets, guests, or previously connected phones, the address limit may be exhausted, and new devices will simply be blocked from connecting to the network, although cable internet will still work.
You can solve this problem by reducing the address lease time in your DHCP settings. By default, it can be set to several days, but 120 minutes is sufficient for a home network. This will allow the router to more quickly release addresses from devices that are out of range or turned off.
A conflict with static IP addresses is also possible. If you manually entered addresses on your computers, they may match the addresses the router is attempting to assign automatically. In this case, it's best to switch all devices to automatic IP assignment (Obtain an IP address automatically) and check that the addressing range does not overlap with other subnets.
⚠️ Note: Router interfaces from different manufacturers (Asus, TP-Link, D-Link, Xiaomi) may look different, but the DHCP server logic is the same. Look for the LAN or Network Settings sections.
For diagnostics, you can use the command line on a Windows computer. Enter the command ipconfig /all and check the address listed in the "Default Gateway" line. If the address doesn't start with the usual 192.168..., your computer may be connected to a different network or have received the address from another device on the network.
Firmware issues and software updates
A router's firmware is the device's operating system. Like a computer, it can contain bugs that can cause unstable Wi-Fi operation. Manufacturers regularly release updates that fix vulnerabilities and improve compatibility with new versions of Android or iOS.
You can check for updates in the "System Tools" or "Administration" sections. Modern routers Keenetic And MikroTik Some models can do this automatically, but older models require manual downloading of the firmware file from the manufacturer's official website. It's important to download firmware only from the manufacturer's website, as third-party files may contain viruses.
The update process is critical: if a power surge occurs or you pull the power cord while the router is writing new data to its memory, the device could become bricked. Therefore, make sure the power supply is stable before updating.
Hardware faults and external interference
If software solutions fail, it's worth considering hardware issues. The internal antenna may have become detached from the board, especially if the router was dropped or exposed to vibration. In dual-band routers, the 5 GHz module often fails while the 2.4 GHz module continues to work, or vice versa.
External interference also shouldn't be ignored. Microwave ovens, baby monitors, Bluetooth headsets, and even fairy lights can create strong interference in the 2.4 GHz band. If your router is located near such devices, try moving it or switching to the 5 GHz band, which has less interference and higher speeds.
Sometimes the problem lies with the router's power supply. Over time, the capacitors dry out, and the supply stops delivering the rated power. The router powers on, the indicators light up, but there's not enough power to run the powerful Wi-Fi module. You can check this by connecting a power supply with similar specifications (the voltage should match exactly; the amperage may be higher).
Why does the router see the network, but says "No Internet access"?
This means there's a connection between the device and the router, but the router can't access the external network. Check your ISP's cable, your account balance, and the PPPoE/L2TP settings on the router. Cloning the MAC address can often solve this problem.
Can a computer virus block Wi-Fi?
Yes, some viruses change DNS or proxy server settings in Windows network settings. Try resetting your network settings with the command netsh winsock reset in the command line as administrator.
How often should you change your router?
The average lifespan of a router is 3-5 years. After that, the equipment becomes obsolete (it no longer supports new speed standards) and physically wears out (its capacitors dry out).
Does the number of connected devices affect the speed?
Yes, the bandwidth is shared among all active users. If one user is downloading torrents, the speed will drop for everyone else. Use the QoS (Quality of Service) feature in your router settings to prioritize traffic.