Why did the wi-fi on the modem disappear? What to do when WiFi doesn't work? How to find a free Wi-Fi channel

If your WIFI stopped working, do not rush to contact paid services specialists or call the craftsmen at home. To help you, we have collected everything useful tips and here are the most common problems and how to fix them.

So, first of all, you need to make sure that there is no Internet precisely through a wireless Wi-Fi connection. Plug the ISP cable directly into the network card. The Internet did not appear even in this case? Call the provider's support service. The problem is not in wi-fi, but in the absence of the Internet for technical reasons. Make sure your internet bills are paid on time.

What to do if the internet is working but wi-fi is not working?

Try connecting to the access point from other devices. So, if WIFI does not work on a laptop, but at the same time you managed to connect to the same network from a smartphone or tablet, then the problem is in the laptop.
Produce visual inspection the router and all cables connected to it. The RJ-45 connector or plug may be damaged, the antenna contact may come off. Try turning it the other way. Very often the router breaks down after a severe thunderstorm (unless you turned off the router in time and pulled the provider's wire out of it). Problems can be easily identified by the number of blinking lights. Get out the instruction manual and find out which light bulb is responsible for what.

If no visual damage is found, the reason is in the settings. In this material, we will not give full settings... You will find them in the instructions and in the service contract with your provider. Consider only the subtleties that many are missing.

How to set up a router correctly

First of all, use the setup instructions provided by your ISP. Many users ask why there is no wi-fi, but the reason may be simple - the provider, in order to upgrade, may change some settings and not notify you about it. Therefore, it will not be superfluous to call the support service and clarify the network parameters.

Go to the settings menu by entering the address indicated on the router case in the search box. What to look for here?

Make sure the DHCP server is enabled. Otherwise, the router will not be assigned an IP address. To do this, go to the DHCP settings and make sure that the value is set to "Running" or "Enable" (if you have an English-language menu).

The data transfer channel on the router is set in automatic mode, but sometimes it is better to choose it yourself. What is the threat of an incorrectly selected communication channel? Signal overlays. To check the congestion of channels, use the Free Wi-Fi Scanner applications (for Windows devices), or Wi-Fi Analyzer (for Androids). By setting Wi Fi channels to "Auto" mode, you enable the equipment to independently select and assign the optimal channel.

Channel width is a parameter that determines the maximum data transfer rate over a certain period of time. For 2.4 GHz routers, the value is set to 20 MHz, for 5 GHz routers - both 20 and 40 MHz. Setting the width to 40 MHz in a 2.4 GHz router is highly discouraged. How do I switch my router to 5 GHz? Operation at a frequency of 2.4 GHz occurs using the b g n protocols. N supports high throughput. But b, g are compatible with devices more than 5 years old. Therefore, for a 2.4 GHz router, it is better to enable mixed bgn mode. 5 GHz routers operate in 802.11a / g mode (but the Wi-Fi modules on the devices must also support it).

Filtering by MAC protects perfectly, but can become a serious obstacle in connection. The function prohibits access to the router for specific devices. Or vice versa, you can specify a list of MAC addresses in the settings - gadgets that are not included in the list will not get access. We do not recommend experimenting with MAC addresses unnecessarily. Quite often, subsequently, because of this, many users do not connect wi-fi and they cannot fix the problem on their own.

What if after Windows installations 10 lost Wi Fi? The problem is solved by installing new drivers. They must be designed for a specific router model and under Windows 10 OS. Note that not all manufacturers at the time of this writing have released drivers that support Windows 10. You can try to install drivers for Windows 8 or contact the contact center of the company that released your hardware.

Why does wi-fi not work on a tablet and phone, but on a computer?

If you do not have Wi-Fi on an iOS or Android device, it will be useful for you to know the following information. In many cases, the problem is, again, in wrong settings, although it is possible that the device is "buggy". You can read about what to do if there is no Internet on a specific device running Android in this one.

Before you start changing the settings, make a "backup" so that the result does not turn out "worse than it was".

At the first stage, delete the wi-fi settings from the device, which you are having difficulty connecting. Otherwise, even if you change the settings of the router, the smartphone or phone will try to connect to the network with outdated settings.

So, what we pay attention to:

The quality of the SSID network name. SSID is the name of the network and this is what you see when you find your network in the list of networks available for connection. It must be unique. Do not use your router model name or common names. If the SSID is not unique and there is already an identical name, the devices will have difficulty authenticating.
You do not find your network in the list of available for connection and are wondering how to connect to WIFI. It may not appear if the signal is weak or there is a hardware problem. But also the tablet and phone will not be able to detect the network if you use a closed (hidden) SSID. How to determine if hidden SSIDs are being used? Make sure there is a check mark next to Broadcast SSID.

If Wifi does not work on your phone, you should also check the encryption settings. As a rule, manufacturers recommend setting AES - Personal WPA2 encryption. But some devices only connect via TKIP. So you should try different types encryption. Also, don't forget the password.

This completes the description of the most common reasons why there is no Wi-Fi. We hope that this material was useful to you and you solved your problem.

Problems with Wi-Fi operation networks can be found not only on Tp-Link routers. But specifically in this article, we will try to figure it out with these routers. Consider possible reasons over which the Wi-Fi network may not work, and why the Tp-Link router does not distribute Wi-Fi. More specifically, we will try to deal with such problems:

The router is turned on and working, but the devices cannot see the Wi-Fi network. That is, the router does not distribute it.
When the Tp-Link router is distributing Wi-Fi, but the Internet does not work.

With the second problem, when there is Wi-Fi, but the Internet does not work, we have already dealt with the article and. See these articles for all the information you need to solve these problems.

Well, if your laptops, tablets, smartphones and other devices do not see Wi-Fi at all, then you need to look for the reason first in the router. Let's figure it out now.

This article will fit all Tp-Link: TL-WR741N, TL-WR841N, TL-WR1043ND, etc.

What to do if TP-Link router won't share Wi-Fi?

We do first of all:

Make sure Wi-Fi is turned on on your device. If you see the networks of your neighbors, but yours does not, then see this article further. If your Wi-Fi network is not displayed, for example, on a phone, but it is on a computer or tablet, then see the article on changing the channel.
If the router is new, you just bought it, then the network will have a standard name. You may simply not immediately see it among the other wireless networks of your neighbors. Try turning off your router and see which network goes missing. Or, simply configure your router with a cable.
Reboot your router.

If the problem persists:

Make sure your router is turned on. If you plugged it in and the power indicator is off, then it is possible that the power is turned off by the button on the router itself. If there is such a button. Usually, it is signed ON / OFF.

TP-Link may not share Wi-Fi because the wireless network may be disabled. Again, with a button on the router itself. Not all models have these buttons. Take a close look at your router. Such a button is usually signed Wi-Fi and recessed into the body. You can press it with something sharp. Here's how it's done on the Tp-link TL-MR3220:

Click on this button and see if a Wi-Fi network has appeared on your devices.

If not, then we will check the settings. Go to the settings of your router via cable. How to do this, I wrote in the article Nothing complicated: connect, type the address in the browser 192.168.1.1 , or 192.168.0.1 (depending on model), and specify the username and password. If you haven't changed them, then admin and admin.

In the settings, go to the tab Wireless... If the firmware is in Russian, then Wireless mode... And look carefully to see if the checkboxes are checked next to the two items: Enable Wireless Router Radio(Enable wireless router broadcast) and Enable SSID Broadcast(Enable SSID Broadcast). If not, install, and click the button Save(save). Reboot your router.

By the way, in the field Wireless Network Name(Network name), you can set a new name for your Wi-Fi networks which will be distributed by Tp-Link.

Basically, these are all the router settings that are responsible for broadcasting the Wi-Fi network and the network name.

It is very important, after which your Tp-Link router stopped distributing Wi-Fi. Maybe they changed something, or set it up. You can describe your problem in the comments. I will try to help with advice. Well, do not forget to share solutions, the information will be useful to many.

There is a router or router in almost every apartment. It is an indispensable part for dividing the Internet signal across all devices connected to it. Many users take this device only because of its ability to distribute the Internet via wireless network Wi-Fi.

At the moment, the main problems arise precisely with such devices and their wifi network. This is due to the fact that earlier the router was an expensive device and required certain knowledge in the settings. Now the situation has changed and the market offers a huge number of such devices. All of them have a user-friendly configuration interface that solves issues related to the operation of the device. Users willingly take such a router, successfully configure it, but when an error occurs, as a rule, they cannot solve it. They don't know what to do or how. And the manual of the device does not describe the solution to all problems that arise.

This article examines the issue when a computer connected by cable can work on the Internet, but there is no such possibility over a Wi-Fi network. All described actions do not require special tools and will save time and money while waiting for the master.

Many users, faced with a wifi network problem, think that the router is to blame and must be replaced. But in 90% of cases, the problem is the incorrect configuration of the router or the computer that connects to the Wi-Fi. The most common symptoms indicating a malfunction are listed below:

The wi-fi signal is not visible to the device.
Frequent reconnection to wifi.
Low speed of the Internet through a wireless network.
Long connection to the router.
The computer is connected to wifi, but there is no Internet connection.

If any of the above-described item appears in operation, then first of all it is necessary to check all the connection settings. In this case, the check must be carried out not only on the router, but also on the device itself, which cannot work on the Wi-Fi network.

Finding out who is to blame

If the computer was able to connect to a wifi wireless network, but there is no Internet connection, then you should find out who is to blame and why.

To do this, the first step is to check the provider's cable itself. You need to try to connect it directly to the computer and configure the device. If you have Internet access, you should check your router.

As a rule, if the router works correctly with a wired connection, then it can be assumed that it is correctly configured. The only moment is to check whether its configuration has the ability to enable and disable the Wi-Fi wireless network. Maybe this setting is turned off and is affecting network performance.

If all the previous steps have been checked and no errors were found, it is worth making sure that the connected device to the Wi-Fi is not faulty. Most quick way checks are an attempt to connect to wifi with another laptop or smartphone. If such equipment is not at hand, then an algorithm will be described below that allows you to check the settings of the computer itself.

Causes of a wi-fi network malfunction

If access to the global network does not work, but at the same time a laptop or smartphone is connected to Wi-Fi, the reason for this may be three various errors... As a rule, two of them arise through the fault of the user himself. The third reason for the error is related precisely to the popularity of wireless routers.

So, below is a list of reasons that can cause malfunctions when wifi does not work correctly:

Prescribed static IP address in the Wi-Fi adapter settings.
An error related to the transmission channel of the wireless network.
Invalid DNS.

All of them are easily removable and do not require doing something specific. The main condition is only for the user to remain calm and have everything they need at hand (router, computer, cable).

Static IP address in the wireless adapter settings or incorrect DNS

This malfunction can be determined during the check described above, when only the computer connected to wifi does not work. As a rule, it is associated with a manually registered IP address in the settings of the wireless adapter. The error occurs due to the fact that the registered address is in a different subnet or conflicts with the same, but assigned to another device. Why is this happening? This is due to the fact that by default the router distributes IP addresses and DNS information automatically, and because of this, it may happen that two addresses are already on the home network.

If the user prescribes all this information manually, in principle, it will not be considered an error, main criterion in this respect for the correctness of all data (free IP, correct DNS).

Sometimes also the reason when wifi is not working can be wrong DNS. The user changes this information to block a certain category of sites (Yandex.DNS - parental control), increase the speed, etc.

To check the network settings of a computer or laptop, go to the notification panel and click on the wifi network status icon. As a rule, when there is no Internet, it shows the signal strength, but with a yellow triangle with an exclamation mark.

Click on it with the right mouse button and select the item "Network and Sharing Center" in the list that appears.

In the menu that appears on the left side, we are looking for the item to change the adapter parameters and click on it.

Next, the user will see all connections on his device. There will be both wired and non-wired connections. To continue, you need to hover the mouse cursor over the wireless connection and press the right mouse button. Then, in the list that appears, select the "Properties" section.

A window should open, where a list will be visible in the center, in which you need to find an item describing the Internet protocol version 4. Select it by one click with the left mouse button (the item should be highlighted in blue). Then we press the button "Properties", which has become active.

After that, the user will see a window where all the settings of the network adapter are stored. Here, you can change the IP address with the rest of the information (netmask and gateway), as well as information about DNS servers.

If there are some numbers here, then try checking the boxes on the automatic receipt of all the necessary information. Next, click the "OK" or "Apply" button.

Then restart your laptop or computer and try to connect to the wifi network. If DHCP is enabled in the router settings, the device will receive the correct address and will work on the Internet.

Wireless link error

What if the Internet does not work, but there is Wi-Fi and it connects successfully? In this case, all settings are checked both on the computer and on the device itself, which distributes the wireless network.

This is the question many users ask. Moreover, the more the popularity of the router, the more relevant this issue is. This is due precisely to the work of wifi via communication channels. In a standard router, there can be 12 such channels of which you can choose one. By default, the router has this setting in the "Auto" mode. This means that the device is looking for the optimal channel and is working with it. But there are cases when the router of the user and his neighbor work in the same mode, which is the reason for many problems with the wireless network.

To change this setting in the router, you need to go to the device's web interface. Further, all the steps in the article are shown for a TP-Link router model. All steps are not much different from other manufacturers (just a different menu and interface) and can be applied to them.

To get to the router settings menu, you need to open any browser and enter the device's IP address in the address bar. You can find out this information from the manual of the device or the sticker on back side router.

Then the main menu will appear, where you need to go to the "Wireless connection" - "Settings" tab.

Then you can see at the bottom of the appeared settings, a drop-down list of available channels. Here, it is recommended to select "Automatic mode" and click the "Save" button.

After that, the device will ask you to wait a few minutes in order to reboot to apply all the settings.

As a rule, after all the described procedures, the wireless network is working correctly. Cutting off all the questions: "What to do?", "Why?" And How?".

All malfunctions in which the router does not work correctly are mainly related to incorrect configuration. A common reason for this is that it distributes wifi, but the Internet does not work. To get rid of this problem, you do not need to do anything specific. As mentioned above, the very first culprit may be the communication channel. This is a common problem and it becomes more urgent every day.

The second moment when Wi-Fi does not work is the user's curiosity, who often likes to make various settings and experiments with the router. Here, everything is easier, you just need to return the standard configuration of all devices, from the computer to the router (if required).

As mentioned above, modern devices have made great strides forward and can solve many problems associated with the operation of the network. But the router itself is a "soldier", what he was ordered to do, then he will do. Therefore, if he distributes wifi, and the Internet does not work, then it would be good practice to check the configuration of all devices.

In contact with

So, you have configured your wireless router, but for some reason something is not working. I will try to consider the most common problems with Wi-Fi router s and ways to solve them. Most of the described problems can be encountered equally in Windows 10, 8.1 and Windows 7, and the solutions will be similar.

From my work experience, as well as from the comments on this site, I can single out the following typical problems that users encounter when, it would seem, they set everything up precisely and according to all kinds of instructions.

The status of the router indicates that the WAN connection is down
Laptop, tablet, smartphone does not see Wi-Fi, but sees the access points of neighbors
Permanent connection drops
Local city resources of the provider, torrent, DC ++ hub and others are unavailable

If I think of other typical things like the above, I will add to the list, but for now, let's start.

(provided that the router is configured correctly)
What to do if, when connected, it writes:
What to do, if .

The Wi-Fi connection is lost and the download speed through the router is low (everything is fine through the wire)

In this case, changing the wireless channel can help you. We are not talking about those situations that are also encountered when the router simply freezes, but only about those when the wireless connection itself disappears on individual devices or in specific places, and it is also not possible to achieve normal Wi-Fi speed connections. You can read more about how to choose a free Wi-Fi channel.

WAN is disconnected or the Internet is only on the computer

The main reason why such a problem occurs with WiFi router- connected WAN connection on the computer. The point of setting up and operating a wireless router is that it will establish a connection to the Internet on its own, and then “distribute” access to other devices. Thus, if the router is already configured, but the connection of Beeline, Rostelecom, etc. available on the computer is in the "connected" state, then the Internet will work only on the computer, and the router will practically not take part in this. In addition, the router will not be able to connect the WAN, since it is already connected on your computer, and most providers allow only one connection from one user at a time. I don’t know how clear I was able to explain the logic, but even if it’s not clear, just take it for granted: for everything to work, a separate provider connection on your computer must be disabled. Only the connection by local network or, in the case of a laptop, etc., a wireless network connection.

It is impossible to go to the address 192.168.0.1 to configure the router

If you are faced with the fact that when typing an address to access the settings of your router, the corresponding page does not open, do the following.

1) Make sure that in the settings of the local network connection (your direct connection to the router) is set: get an IP address automatically, get DNS addresses automatically.

UPD: Check if you are entering this address in the address bar - some users, trying to configure the router, enter it into the search bar, resulting in something like "The page cannot be displayed."

2) If the previous point did not help, use the Run command (Win + R keys, in Windows 8 you can just start typing the word Run on the start screen), type cmd, press Enter. And in the mode command line enter ipconfig. Pay attention to the value of the "Default gateway" of the connection used for configuration - it is at this address that you should go to the administration page of the router. If this address differs from the standard one, then it is possible that the router was previously configured to work in a specific network with certain requirements. You can reset it to factory settings. If there is no address at all in this paragraph, then, again, try resetting the router. If it did not work, then you can also try to disconnect the provider's cable from the router, leaving only the cable that connects it to the PC - this can solve the problem: make the necessary settings without this cable, and after everything is configured, reconnect the provider's cable. Pay attention to the firmware version and, if it is relevant, update it. If this does not help either, make sure that the "correct" drivers are installed for the computer's network card. Ideally, download them from the manufacturer's website.

Settings are not saved

If, for some reason, the settings, after entering them and clicking “save”, are not saved, and if you cannot restore the settings previously saved to a separate file, try performing the operation in another browser. In general, in case of any strange behavior of the router's admin panel, you should try this option.

Laptop (tablet, other device) does not see WiFi

In this case, a wide variety of options are possible and they are all approximately the same. Let's go in order.

If your laptop does not see the access point, then, first of all, check if the wireless module is enabled in it. To do this, look in "Network and Sharing Center" - "Adapter Settings" in Windows 7 and Windows 8, or in Network connections on Windows XP. Make sure the wireless connection is turned on. If disabled (displayed in gray), then enable. The problem may have already been resolved. If it doesn't turn on, see if your laptop has a hardware switch for Wi-Fi (my Sony Vaio, for example, does).

Let's go further. If the wireless connection is turned on, but is constantly in the "No connection" status, make sure that the required drivers are installed on your Wi-Fi adapter. This is especially true for laptops. Many users installing a program to automatically update drivers or having a driver installed by the operating Windows system automatically, consider that this is the correct driver. As a result, they often face problems. The driver you need is the one that is on the website of your laptop manufacturer and is designed specifically for your model. Laptop computers often use specific hardware and the use of drivers (not only for network equipment) recommended by the manufacturer avoids many problems.

If the previous option did not help you either, we try to go to the "admin panel" of the router and slightly change the wireless network settings. First: change b / g / n to b / g. Did it work? This means that the wireless module of your device does not support the 802.11n standard. It's okay, in most cases, it will not affect the speed of access to the network in any way. If it does not work, try to manually specify the wireless channel in the same place (usually it is "automatically").

And one more unlikely, but possible option, which I had to deal with three times, and two times - for the iPad tablet. The device also refused to see the access point, and this was solved by setting the United States region instead of Russia in the router.