My router stopped distributing Wi-Fi: all the reasons and what to do right now

You turned on your laptop, smartphone, or smart speaker, and instead of the usual Wi-Fi connection, you see a "No Internet" message or no network listed at all. The router is on, the cables are intact, but the Wi-Fi is gone. Sound familiar? There are dozens of reasons for this behavior, from simple overheating to a hidden firmware glitch. In 80% of cases, the problem can be resolved independently in 5-15 minutes, without the need for professional help.

This article - step-by-step diagnostic guide with checklists, warnings about typical mistakes and instructions for popular models (TP-Link Archer C6, ASUS RT-AX55, Keenetic Giga, Xiaomi Mi Router 4A etc.). We will examine both hardware faults (for example, radio module failure) and software faults (IP conflict, MAC address blocking). We will pay special attention hidden router settings that are reset after a firmware update or factory reset.

Before rushing to reflash your device or take it to a service center, check the basics. Often, the problem lies in small details: a power outage at the ISP level, a channel conflict with neighboring networks, or a simple DHCP server overload. Let's start with the simplest and gradually move on to more complex steps.

1. Check the obvious: power, cables and indicators

The first rule of diagnosis: Make sure the router is physically turned on and receiving power.It sounds trivial, but in 15% of support requests, the problem is resolved by connecting the power supply to a different outlet or replacing the damaged cable. Here's what to do:

• 🔌 Nutrition: Check if the indicator light is on Power on the front panel. If not, try a different power supply (with suitable voltage and amperage). For models Keenetic And Zyxel Sometimes the power connector breaks down - you can carefully solder it yourself.
• 🌐 Provider's cable: Disconnect the Ethernet cable from the port WAN (usually highlighted in blue) and connect it directly to your computer. If the internet works, the problem is with the router. If not, call your provider (they may have been disconnected due to non-payment or there may be a line problem).
• 📡 Wi-Fi indicators: On most routers, a separate LED with an antenna symbol lights up (for example, 2.4G/5G). If it blinks orange or does not light at all, this indicates a hardware failure of the radio module.

Please note character of indicator blinkingFor example, TP-Link A rapid flashing of all the lights at the same time signals a reset, and ASUS — about faulty RAM. For exact values, see the user manual (usually there is a section LED Indicators).

⚠️ AttentionIf your router becomes so hot that you can't touch it, unplug it immediately. Overheating can damage the capacitors on the board. This is especially true for models in plastic cases without ventilation (e.g., D-Link DIR-615 or Tenda AC6).

2. Rebooting the router and devices: the correct sequence

Power Reset (hard reset) solves up to 30% of Wi-Fi distribution problems. But it's important to do this correctly, rather than simply pulling the cord out of the outlet. Here's the sequence of actions:

1. Disconnect the router from the network using the button Power (if any) or unplug the power cord.
2. Wait minimum 30 seconds (during this time the capacitors on the board will discharge).
3. Disconnect the provider's cable from the port WAN.
4. Turn the router back on and wait until it is fully loaded (the indicators will stop flashing).
5. Connect the WAN cable and check the Wi-Fi operation.

If after rebooting the network appears, but after some time it disappears again, the problem may be in DHCP server overload (This is especially relevant for office networks with a large number of devices.) In this case, manually binding MAC addresses or limiting the number of connections in the settings will help.

Disconnect all devices from Wi-Fi

Check if the error indicators are on

Prepare a reset pin (if needed)

Write current settings (if not saved)-->

For models with dual firmware (ASUS with Rescue Mode, Keenetic with recovery system) if it freezes, holding the button will help Reset within 10-15 seconds. This will initiate emergency mode, from which you can reflash the device.

3. Diagnostics via the web interface: what to look for in the settings

If the router turns on but doesn't broadcast Wi-Fi, go to the control panel. The address is usually on a sticker on the bottom (for example, 192.168.0.1, 192.168.1.1 or my.keenetic.net). The default login and password are also there (admin/admin or admin/empty).

Here are the key sections to check (paths may vary depending on model):

If everything is correct in the settings, but Wi-Fi still doesn’t work, try temporarily disable network protection (remove the password) and check the connection. If the network appears, the problem is with the encryption type. For maximum compatibility, select WPA2-PSK with encryption AES (Not TKIP!).

How do I know which Wi-Fi channel is free?

Use apps like Wi-Fi Analyzer (Android) or NetSpot (Windows/macOS). They show the channel load in your area. The optimal option is the channel with the fewest intersections (it will be the "emptiest" one in the graph).

4. Resetting settings: when and how to do it correctly

If your router is glitching after updating the firmware or changing the settings, this will help full reset to factory settingsBut remember: this will erase all your settings, including Wi-Fi passwords, linked devices, and firewall rules. Before resetting:

• 📝 Save the current configuration (most routers have this option) Backup Settings in the section System tools).
• 🔍 Check with your provider for the connection type (PPPoE, L2TP, Dynamic IP) and authorization information.
• 📱 Prepare your device (PC or smartphone) to connect to the router via cable after the reset.

The process itself:

1. Press and hold the button Reset (usually recessed into the body, you will need a paper clip) within 10-15 secondsuntil the indicators start flashing randomly.
2. Release the button and wait for the reboot (1-2 minutes).
3. Connect to the router via cable (Wi-Fi will be called TP-Link_XXXX or similar).
4. Go to the web interface and set up your internet connection again.

⚠️ Attention: On routers Keenetic with NDMS 3.0 firmware and newer, reset with a button Reset This activates recovery mode, not a full reset. To restore factory settings, you need to go to the web interface and select System → Configuration → Reset settings.

5. Firmware update: risks and the correct algorithm

Outdated or corrupted firmware is a common cause of Wi-Fi issues. Manufacturers regularly release updates to fix radio module bugs. However, An incorrect update can brick your router. (make it inoperable). Follow this algorithm:

1. Download the latest firmware from official website manufacturer (not from torrents!). For TP-Link Check the model on the sticker - firmware for Archer C6 v2 And v3 incompatible!
2. Connect the router to the PC via cable (not via Wi-Fi!).
3. Go to the web interface and find the section Firmware Upgrade.
4. Download the firmware file and wait for the process to complete. Do not turn off the power! On ASUS it takes up to 5 minutes, Xiaomi — up to 10.

If after updating the router does not turn on or constantly reboots, try roll back to a previous versionTo do this:

• 🔄 Download the old firmware from the archive section of the manufacturer's website.
• 🖥️ Use a recovery utility (for example, TFTP For TP-Link or Firmware Restoration For ASUS).
• 🔌 Connect the router to the PC via cable, hold Reset and turn on the power - this will start the emergency mode.

⚠️ Attention: Routers MikroTik (For example, hAP ac²) require a special approach to updating. Use only the utility Winbox and disable all firewall rules before flashing the firmware. Otherwise, the device may freeze during the file signature verification process.

6. Hardware malfunctions: how to recognize and what to do

If software methods do not help, the problem may be in ironHere are typical signs of hardware failure:

• 🔥 The router gets very hot even after 10-15 minutes of operation (especially true for models with passive cooling).
• 📶 The Wi-Fi indicator does not light at all or flashes red/orange.
• 🔌 Port WAN or LAN does not work (the cable is connected, but there is no connection).
• 🔄 The router reboots cyclically (for example, every 2-3 minutes).

The most common breakdowns:

If you're inexperienced in soldering, it's best to take your router to a service center. The average cost of repairs (capacitor replacement, Wi-Fi chip resoldering) is 1,500–3,000 rubles. For routers older than 5 years, it's more cost-effective to buy a new one (for example, TP-Link Archer AX10 or Xiaomi Router 4C).

7. External interference: how neighbors and household appliances interfere with Wi-Fi

Even a working router may have poor Wi-Fi distribution due to external interferenceSources of problems:

• 📡 Neighboring networks on the same channel (especially in apartment buildings).
• 🔌 Microwave ovens, cordless DECT phones, baby monitors (operate at a frequency of 2.4 GHz).
• 🚗 Bluetooth devices (speakers, headphones, keyboards) in close proximity to the router.
• 🏗️ Concrete walls or metal structures (weaken the signal at 5 GHz).

How to minimize interference:

1. Change the Wi-Fi channel in the router settings (optimally 1, 6 or 11 for 2.4 GHz; for 5 GHz, select the channel marked DFS, if your devices support it).
2. Reduce the transmit power (parameter Transmit Power) up to 70–80% - this will reduce the level of interference for neighbors and can improve stability.
3. Move the router away from household appliances. The optimal location is 1–1.5 meters above the floor, in the center of the apartment.
4. If you use a dual-band router, separate the networks: for stationary devices (PC, TV) - 5 GHz, for mobile devices (smartphones, tablets) - 2.4 GHz.

For advanced users: in routers based on OpenWRT or DD-WRT You can manually adjust the channel width (Channel Width). For 2.4 GHz, select 20 MHz (will reduce speed but increase stability), for 5 GHz - 40 MHz or 80 MHz (if devices support it).

8. When to call your provider or take your router to a service center

If you've tried all the methods and your Wi-Fi still isn't working, the problem might not be with your router. Here are some signs that it's time to contact your provider or a service center:

• 🌐 The Internet doesn't work even when connected directly to the PC via cable (without a router).
• 📞 The provider carried out technical work on the line (connection parameters may have changed).
• 🔧 The router is giving an error No DNS or Limited Connectivity on all devices.
• 🔥 Burnt-out components, blackened tracks, or bulging capacitors are visible on the board.
• 🔄 The router constantly reboots, even after resetting the settings.

Before calling your provider, prepare:

• Router model and firmware version.
• Connection type (specified in the contract: PPPoE, L2TP, Dynamic IP, etc.).
• Router logs (section System Log in the web interface).

If the provider claims that the problem is on your side, but you are sure otherwise, ask for a checkup. line diagnosticsBy law, they are required to do this free of charge. The average verification time is 1–2 days.

⚠️ Attention: Some providers (eg. Rostelecom or MTS) bind subscriber equipment to a MAC address. If you've replaced your router, please provide the new MAC address to support; otherwise, the internet won't work.

FAQ: Frequently Asked Questions about Wi-Fi Problems

The router is distributing Wi-Fi, but the internet only works on some devices. What's wrong?

Most likely, the router has the function enabled bandwidth control (QoS) or parental control, which restricts access for individual devices. Go to the web interface, section QoS or Parental Control, and check the rules. The problem could also be in IP address conflict - try manually assigning a static IP to the problematic device.

After updating the firmware, my router stopped broadcasting Wi-Fi. How can I revert to the previous version?

Most routers allow you to roll back to the previous firmware version using emergency mode. To do this:

1. Download the old firmware from the official website.
2. Connect the router to the PC via cable.
3. Hold the button Reset, turn on the power and hold the button for another 10-15 seconds (until the indicators flash).
4. Use a recovery utility (eg TFTP For TP-Link or ASUS Firmware Restoration).

If the router isn't responding, the boot area of ​​the flash memory may be damaged. In this case, the only solution is to re-solder the chip or replace the board.

Wi-Fi works, but the speed is very slow (1-2 Mbps). What should I do?

Reasons for slow Wi-Fi:

• 📶 Congested channel (change the channel in the router settings to 1, 6, or 11).
• 🔄 Outdated firmware (update it).
• 📱 Old Wi-Fi standard (e.g. 802.11n instead of 802.11ac). In the router settings, select the mode 802.11ac or Wi-Fi 6 (802.11ax), if your devices support it.
• 🛡️Encryption enabled TKIP (change to AES in security settings).
• 🏠 Long distance to the router or obstacle (try using a repeater or mesh system).

Also, check if your ISP is throttling your speed. To do this, connect your PC directly to the cable and run a speed test. speedtest.net.

Is it possible to fix a router yourself if it doesn't turn on?

If the router does not respond to the power button and none of the indicators are lit, the following may be the reasons:

• 🔌 Faulty power supply (check with a multimeter - should be ±12V).
• 🔋 Swollen or leaking capacitors on the board (they can be replaced with a soldering iron).
• 🔥 Blown fuse (located next to the power connector).
• 🖥️ Damaged firmware (requires reflashing via JTAG or SPI programmer).

For repair you will need:

• Soldering station (power 30-40 W).
• Solder, flux, thermal paste.
• Multimeter for checking voltages.
• Spare capacitors (if they are swollen).

If you don't have soldering experience, it's best to take your router to a service center. Repairs (capacitor and fuse replacement) cost from 1,000 rubles.

How to protect your router from future failures?

To minimize the risk of recurring problems:

• 🔄 Update your firmware once every 3-6 months (but not more often - new versions may contain bugs).
• 🌡️ Control the temperature: If the router is hot, place it on a stand or use an additional cooler (for example, for ASUS RT-AC68U).
• ⚡ Use a UPS (uninterruptible power supply) to protect against power surges.
• 🔒 Disable remote access to the web interface (section Administration → Remote Management) to prevent hacking.
• 📡 Set up a backup channel: If the main 5 GHz network drops out, devices will automatically switch to 2.4 GHz (optional) Band Steering in routers Netgear or Linksys).