The router stopped distributing Wi-Fi: full diagnostics and solution

You turned on your laptop, smartphone, or smart speaker, and instead of the usual Wi-Fi connection, you see a message saying "No Internet" or there's no network at all. Sound familiar? The router stopped distributing Wi-Fi. — is one of the most common problems faced by home network users. The causes can range from trivial (a power outage) to complex (a hardware failure). In this article, we'll look at all possible scenarios, from simple to extreme, and we will provide clear instructions on how to restore network functionality.

It is important to understand: In 80% of cases, the problem can be resolved without calling a technician—it's enough to reboot the equipment or change the settings.But if the router doesn't respond to a reset or flashes abnormal indicators, a more in-depth diagnosis will be required. We won't offer "magic buttons," but we will explain How to independently determine the source of a malfunction — whether it’s a software glitch, interference from neighboring networks, or a physical breakdown.

This article is suitable for owners of routers of any brand: TP-Link, ASUS, Keenetic, Zyxel, MikroTik and others. Most solutions are universal, but we'll point out the specifics for specific models. Let's start with the simplest: checking for obvious causes.

1. Checking the basics: power, cables, indicators

Before digging deeper, make sure the problem isn't just on the surface. 50% of support requests are resolved at this stage - users simply don't notice a disconnected cable or a tripped circuit breaker.

Start by inspecting the router:

• 🔌 NutritionIs the indicator light on the power supply unit? If not, check the outlet (connect another device) and the adapter itself (try a different one with a compatible voltage). For some models ASUS And Keenetic Power supplies fail due to voltage surges.
• 🌐 Provider's cable: if the indicator WAN (or Internet) is off or flashing red—there's a problem with your internet provider. Check that the cable is securely inserted into the router port and that its braiding isn't damaged.
• 📡 Wi-Fi indicators: On most routers, a separate LED lights up (for example, 2.4G/5G). If it's off, the network is disabled in the settings or there's a firmware error. Is it blinking orange? This indicates a hardware fault with the Wi-Fi module.

Pay special attention overheatingIf the router is hot to the touch (especially models TP-Link Archer C6 or ASUS RT-AC68U), turn it off for 10-15 minutes. Overheating leads to automatic shutdown of the Wi-Fi module To protect the device from damage, ensure proper ventilation (avoid placing the device in closed cabinets) or use a cooling pad.

⚠️ AttentionIf the router doesn't turn on at all after disconnecting the power (no indicator lights), do not attempt to disassemble it yourself. This indicates a burnt-out transformer or motherboard—repair at a service center is required.

2. Reboot and reset the router settings

The classic "power off and on" method works not only with computers. Rebooting the router Resets temporary RAM errors, IP address conflicts, and DHCP server failures. Here's how to do it correctly:

1. Turn off the router's power (unplug it from the power outlet).
2. Wait 30 seconds - this time is enough for the capacitors to discharge.
3. Turn on the power and wait until it is fully loaded (the indicators will stop flashing).

If rebooting doesn't help, do the following: factory resetThis will reset the router to its default state, but will delete all your settings (network name, password, ports, etc.). Instructions:

• 🔧 Press and hold the button Reset (usually recessed into the body, you will need a paper clip) within 10-15 seconds.
• 💡 The indicators should go out and then light up again - this is a signal of a successful reset.
• 🔄 Connect to the router via cable (or to the network with the default name, for example TP-Link_XXXX) and configure it again.

⚠️ Attention: After the reset, don't forget update your Wi-Fi password on all devices. Use a complex combination (for example, WPA3-Personal with 12+ characters) to avoid hacking.

Connect to the default network (name is on the sticker)

Go to the control panel at 192.168.1.1 or 192.168.0.1

Set up an Internet connection (PPPoE, DHCP, etc.)

Change your Wi-Fi name and password

Update firmware (if available)-->

3. Firmware issues: updating and downgrading

Firmware failures are a common reason why a router suddenly stops distributing Wi-Fi, while the cable connection works. Symptoms:

• 🔄 The router constantly reboots (is stuck on the logo).
• 📵 The Wi-Fi network is not listed as available, although the indicator is on.
• ⚠️ Errors like this appear in the control panel "Firmware corrupted".

Solution - update firmware Manually. Procedure:

1. Download the latest firmware version for your model from official website of the manufacturer (for example, for TP-Link — tp-link.com, For ASUS — asus.com).
2. Connect to the router via cable and go to the control panel (usually at 192.168.1.1 or 192.168.0.1).
3. Go to the section System Tools → Firmware Update (the name may differ).
4. Upload the downloaded file and wait for the process to complete (Do not turn off the power!).

If the router does not respond to the update via the web interface, use emergency mode (For ASUS — Firmware Restoration, For TP-Link — TFTP). For detailed instructions, please refer to the documentation for your model.

What should I do if the firmware has completely crashed?

If the router does not boot even in emergency mode, you will need to reflash it UART (a special connector on the board). This is a complex procedure that requires a soldering iron and knowledge of electronics. For most users, it's easier to buy a new router or take the device to a service center.

4. Channel conflicts and interference from neighboring networks

If your router periodically turns off Wi-Fi or the speed drops to zero, the culprits may be interference from other networksIn apartment buildings on one channel (for example, 6 or 11) dozens of routers can be operating, which leads to conflicts.

How to check and fix:

1. Install a Wi-Fi analysis app on your smartphone (for example, WiFi Analyzer for Android or NetSpot for iOS).
2. Look at what channels less busy in your location.
3. Go to the router settings section Wi-Fi → Channel Settings and choose a free one (for example, 1, 13 or 48 for 5 GHz).

For stability, it is also recommended:

• 📶 Disable automatic channel selection — the router can select occupied frequencies.
• 🔄 Set a fixed channel width (For example, 20 MHz for 2.4 GHz instead 40 MHz, if there is a lot of interference).
• 🛡️ Enable protection from neighbors (option Airtime Fairness in routers ASUS or Band Steering V Keenetic).

5. Hardware faults: how to diagnose

If none of the software methods helped, the problem may be hardwareCommon breakdowns:

• 🔥 Burnt out Wi-Fi moduleThe router works via cable but doesn't provide Wi-Fi. This often happens after a thunderstorm or power surge.
• 🔌 Damaged antennas: if one of the antennas is detached or broken, the signal strength drops by 2-3 times.
• 🔋 Swollen capacitors: "Swollen" parts are visible on the board - a sign of failure.

How to check:

1. Connect the router to a different power source (rule out the unit’s malfunction).
2. Try using a different network cable (sometimes the problem is in a damaged twisted pair cable).
3. If you have a spare antenna, replace it (on some models TP-Link antennas are removable).

For an accurate diagnosis, you will need to disassemble the router. AttentionThis will void your warranty! If your device is under warranty, contact a service center. Otherwise:

• 🔧 Unscrew the screws on the bottom cover (sometimes they are hidden under stickers).
• 👀 Inspect the board for anything blackened elements, swollen capacitors or burnt tracks.
• 📡 Check the antenna connectors - they should be tightly soldered.

⚠️ AttentionIf you have no experience with electronics, do not attempt to solder the board yourself. Improper repairs can completely damage the router.

6. Problems on the provider's side

Sometimes the router is not to blame - the provider has no internetHow to check this:

• 📞 Call support and check if there are any problems on the line.
• 🔌 Connect your ISP's cable directly to your computer (bypassing the router). If you still can't connect to the internet, the problem is with your ISP.
• 🔄 Reboot modem (if it is separate) or a router with a modem function (for example, Keenetic Giga).

Typical provider problems:

• 🔌 Cable break on the street or in the entrance.
• 🔄 Authentication server failure (for example, PPPoE does not work).
• 📵 MAC address blocking (If you changed your router, its MAC may not be registered with your provider).

If the provider has confirmed the problem, write down the ticket number and the timeframe for fixing it. In some cases (for example, when PPPoE error 651) will help reset connection settings on the router:

Go to section:
WAN → Connection Type → PPPoE
Delete your login/password and enter them again.

7. Alternative solutions: if the router cannot be repaired

If your router is completely broken and you don't want to buy a new one, there are temporary solutions:

• 📱 Sharing Wi-Fi from your phone: turn on Modem mode in the smartphone settings (suitable for 1-2 devices).
• 💻 Distribution from a computer: in Windows use Mobile hotspot (Settings → Network & Internet).
• 🔄 Using a second router: If you have an old router, connect it to the working one via cable (mode WDS or Repeater).

For a long-term solution, choose a router based on:

• 📡 Transmitter power: for a large apartment - models with 4×4 MU-MIMO (For example, ASUS RT-AX88U).
• 🛡️ Protection against interference: seek support 160 MHz in 5 GHz and OFDMA (standard Wi-Fi 6).
• ⚡ Firmware reliability: brands MikroTik And Ubiquiti It is famous for its stability, but requires some adjustment.

FAQ: Frequently asked questions about Wi-Fi not working

The router is distributing Wi-Fi, but devices aren't connecting. What's wrong?

Possible reasons:

• 🔐 Incorrect password (check the case).
• 📵 MAC address restriction (disable filtering in your router settings).
• 🔄 DHCP failure (try assigning a static IP on the device).

After resetting, the router won't save settings. What should I do?

This is a sign corrupted memory (NVRAM)Solutions:

• 🔧 Update your firmware to the latest version.
• 🔄 Perform a reset via TFTP (For TP-Link) or Firmware Restoration (For ASUS).
• 🚮 If this doesn't help, the router needs to be replaced.

Is it possible to fix a router with a burnt-out Wi-Fi module?

Theoretically yes, but:

• 🔧 Required chip replacement (For example, Qualcomm Atheros or Broadcom), which is expensive.
• 💰 The cost of repairs often exceeds the price of a new mid-range router.
• ⚠️ The warranty does not cover such repairs.

It is more profitable to buy a new model.

How to protect your router from future failures?

Preventive measures:

• ⚡ Use surge protector to protect against power surges.
• 🔄 Update your firmware once every 3–6 months.
• 🌡️ Monitor the temperature (optimally up to 50°C).
• 🔒 Disable remote access to the control panel (optional) Remote Management).

My ISP says everything is fine on their end, but the internet isn't working. What should I do?

Possible steps:

• 🔌 Check the cable for physical damage (kinks, breaks in the braid).
• 🔧 Connect the cable to a different port on the router (sometimes it breaks) WAN port).
• 📡 Try a different router (borrow one from your neighbors) - if the problem persists, the ISP is to blame.

If nothing helps, demand technician's departure to check the line.