Why does Wi-Fi disappear from time to time? Wi-Fi turns off on the laptop. Why does the Internet disappear via Wi-Fi? The Wi-Fi network is visible to devices, but they do not connect to it

Wi-Fi on the laptop has disappeared and there is a red cross everywhere - this is the most common error. Although any user of modern devices has ever experienced problems with Wi-Fi connection to the Internet. Unstable Internet (or even its complete absence) is usually very annoying; you want the problem to be solved as soon as possible, but it cannot be solved on its own - you need to diagnose the problem and make efforts to solve it. Just today we will look at the most common problems of wi-fi connections to the Internet and ways to solve them.

Why wifi disappears - reasons

There are incredibly many reasons that could potentially cause the lack of a stable wifi connection (or connection at all), such as banal removal at an excessively long distance, the presence of any radio interference in the coverage area of the access point, and the presence of all kinds of shielding elements between the router and you. However, most often the network disappears due to software errors and hardware malfunctions.

Diagnosis of the problem

If the Internet via wifi is lost, and there are no obvious signs of a hardware malfunction (a broken router antenna, for example), and getting close to the access point to a distance of 3-5 meters did not help, you should start looking for software errors. The mechanism for detecting them is individual for each specific OS and gadget. And yet, in the case of the most popular devices, such as laptops with Windows, smartphones running Android and iPhone, there are some universal recommendations that with almost one hundred percent probability will help to detect the software cause of the lack of signal.

If your gadget is running a less popular OS, for example, Symbian, Windows Mobile, or even some kind of “home-written Chinese OS”, it is impractical to carry out software diagnostics, since the built-in mechanisms for this in such OSs, as a rule, are absent, and flashing the firmware will take much less time than poking around in the software core.

What to do if wifi disappears on a Windows laptop

The reasons for the loss of wifi signal on a laptop can be divided into three categories:

If, when you press the corresponding key on the laptop, the wifi module operation indicator (the light next to which wifi is written or the corresponding icon is drawn) does not light up, then the problem is in the device itself. Check if the corresponding option is enabled in the BIOS. To do this, restart the laptop and press the corresponding key in the first 3-5 seconds of booting. As a rule, this is F2, F8 or F12. However, the BIOS boot initiation key may be different - carefully read the notification that appears when you turn it on (usually the required button is written at the bottom right). It is worth noting that your BIOS version may not have the option to enable the wifi module, so it is first recommended to read the user documentation or enter the combination of ““name of your laptop” wifi bios” into a search engine.

Wi-Fi disappeared in windows

If the wifi module and router operation indicators are lit but there is no signal, you should check whether wifi is enabled in Windows itself. Right-click the corresponding taskbar icon (the bar at the bottom or top of the screen), then click: “Network and Sharing Center” => “Change adapter settings” => Find the monitor icon with the wifi signal strength scale => “Enable”.
Also, instead of right-clicking on the icon on the taskbar, you can click “start” => “control panel”.

Often the reason why wifi on a laptop disappears is faulty drivers. Right-click the “computer” shortcut, select “properties” => “device manager” and look for “network adapters”. Make sure the adapter is turned on. If there is a yellow triangle next to it, select “update drivers”.

The reason for unstable wifi operation may be high load on the router. Check and disable the most active users!

If the laptop sees other networks, but cannot connect to the one you are interested in, the problem is in the router settings. To diagnose it, you need to connect to the router using a cable or other device and type the debug address in the browser address bar: “192.168.0.0”. In the window that appears, enter: “admin/admin”. Next, you should check whether signal transmission via wifi is turned on, and whether your device is on the “black list” of the MAC filter. You should also make sure that the router allows the simultaneous connection of multiple devices.

If you cannot connect to the router even through a cable, you should press the “reset” button on the router and wait 10-15 seconds.

If none of the above helps, try calling your ISP and asking if they are receiving feedback from your router (when it is up and running). If not, then most likely your router’s hardware has failed.

Wi-Fi on my laptop turns off constantly or periodically, what should I do?

If the signal on the laptop appears and disappears, no matter what access point you are connected to, most likely the problem is in the system power plan settings. To fix this problem, select the "maximum performance" mode, but note that this will affect battery life. In addition, disable automatic hibernation - very often, after waking up from sleep mode, the wifi adapter de facto remains turned off until the next reboot.

My iPhone loses wifi, what should I do?

First, make sure that the problem is in the iPhone, and not in the router - often, users mistakenly believe that wifi is not working on the iPhone, although the reason is the access point. If your gadget sees other networks, the iPhone is working. Secondly, make sure you have the latest version of iOS.
If the iOS update did not help, click: “Settings” => “General” => “Reset” => “Reset network settings”.
If this doesn’t help, the iPhone is faulty.

If the gadget does not connect to any network at all, either reflashing it or going to a technician will help. If it connects to some networks but not to others, you should enable the bgn broadcast mode on the desired access point and try to set a static signal broadcast channel instead of the Auto mode. This can be done through the router settings menu (the address described above is 192.168.0.0). It is also worth noting that not all Android devices support pairing with wifi, relayed through a laptop in forwarding mode (when the laptop acts as a router).

The Internet via wifi has disappeared, but there is a wifi network

If the device is connected to an access point, but there is no Internet, check the cord going to the router and contact your provider. If the problem is only on a specific device, try clearing the cache or using a different browser. You should also make sure that the device (not the memory card!) has at least 10% memory.

What to do if the wifi icon disappears

If the icon itself disappears, you should make sure that wifi mode is turned on. If the option to turn on wifi is missing, or the icon does not appear, you will have to reflash your smartphone or update your laptop drivers.

So, the article discussed all the most common problems with wi-fi Internet access, and also suggested ways to solve them. If you have read this article, conscientiously followed all the recommendations given, but your wi-fi still does not work, feel free to take your device to a service center, since you (most likely) will not be able to fix the problem at home.

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Wireless Internet is very convenient and modern, but it is not always problem-free. Some glitches that cause a lot of trouble for users appear on their own over and over again. Today we’ll talk about why the Wi-Fi network disappears. As a rule, such incidents are relevant for laptops, which, it would seem, are simply designed to work specifically with wireless networks, supporting the idea of creating an ideal mobile solution.

Diagnosis of causes

Since there may be several reasons for the problem, below we will look at each separately. In general, first you will need to do some diagnostics and check if there are any problems with the router’s power supply and the device itself. In the case of the first, everything is determined quite simply; to check the second, you need to try connecting other devices to the network - tablets, phones.

If everything works fine, perhaps the problem is only with the computer, and you need to check the operation and settings of its adapter one by one.

Energy saving

The next thing we should do if the Wi-Fi network has disappeared is to carry out diagnostics using the system. Click on the wireless network signal icon and find the “Problem Diagnosis” item, then follow the instructions. Perhaps this option will help you.

Open “Start” and find the “Control Panel” we need. Now we need the settings that are hidden under the “Power Options” icon.

There will be several options here and, if you do not want to set high performance, then you need to select at least “Balanced mode”.

If this option is also unacceptable, you can only configure separate consumption for the adapter. Click “Configure power supply scheme” next to the required option.

Now “Change advanced settings”.

Here we scroll down and find the item “Adapter parameters” - you need to expand the parameter tree, then once again expand the sub-item “Energy Saving” and there in the parameters “from battery” and “from network” set “Maximum performance”.

You have done everything that could be done here - now click “OK”, “Save changes” and close the window.

The second option also, in a sense, depends on the power settings - it happens that when the user puts the computer into sleep mode, after turning on the adapter still remains in this mode.

Click “Start” again and click on “My Computer” and select “Properties”.

There will be a lot of equipment inside, but we are interested in network adapters. Having opened the tree with them, we look for the one with the Wi-Fi annotation and double-click with the left mouse button.

Here we look for “Power management” and uncheck the “Allow the device to turn off to save energy” checkbox. Next, click “OK” and test how everything works. To be more sure, the best option would be to reboot your device after all these operations.

Sometimes the problem may be due to oxidation of the adapter contacts, failure to connect it after cleaning or repair, or to the device drivers. In the first two cases, only mechanical intervention will help. To update drivers, you need to find the name of your model and go to the manufacturer's official website to download the necessary programs.

This is all that could be done on the computer side if the Wi-Fi network disappeared, and now we will look at solving the problem on the distribution point side.

If the reason is in the router

If after all the checks you come to the conclusion that the problem is with the distribution device, then there is not much you can do: when the router is turned on and working normally, even without special settings and a plugged-in provider cable, the network will be detected and should not disappear.

Hi all. Recently I encountered a problem that the wifi on the router disappeared. If you come close to the router, everything works fine. But if you go to another room, the speed drops significantly and wifi periodically disappears. Although a little earlier there were no such problems anywhere.

I increased the power of the router, increased its speed, and made special settings on my smartphone and laptop. But this did not give any results. I had to look for the reason elsewhere and I found it. I also realized that many people have this problem and many do not know what to do if wifi disappears on the router. In this article I will tell you how to achieve a stable connection to a Wi-Fi network.

Identifying the problem is quite easy. For this we need a smartphone. I will take my Android smartphone simply because it will be easier for them to check everything. In this case, we will need a smartphone to see in different parts of the room where and how our network is working, and also to see what interference there is in the network.

The whole problem is that today everyone installs a WI-FI router at home and because of this the number of Wi-Fi networks is increasing. Accordingly, when networks are on the same channel, it creates a lot of wifi interference and because of this, your network begins to work poorly. All devices that are connected to this network must also listen to other networks on the same channel and only after that connect to their channel (router), and then send data.

How to use wifi analyzer

To identify clogged channels we will use an Android smartphone. You will need to download a free wifi analyzer program on your smartphone. The free version will be quite enough. You can find the program in Play Market. It is necessary to install the program from the author M. Sid. She looks like this

After installation, launch the program and see what networks we have. Below I will show you how to use wifi analyzer. My example shows all the networks that my smartphone can see.

In this case, the networks are located on different channels. At the bottom there is a strip of channels and the channels go from one to fourteen. But I want to say right away that old routers only support the first 12 channels. And channels 13 and 14 support only the most modern devices that support the latest versions of the Wi-Fi protocol. Accordingly, in order to find the best network, we must look at those networks that are currently free and on which the least amount of interference will be created. If you noticed, in the graph above, channels 3 and 4 are free. In addition, there is also a ninth channel, on which there are no networks at all, but the problem is that work on this channel is impossible on most devices. Therefore, some factors need to be taken into account. For example, if you have a modern router, you can turn on any channel in it and use this channel to connect to your Internet. But there is another point. In addition to the fact that you can connect using the 2.4 GHz frequency, there is also a 5 GHz frequency. Let me switch to it now.

Please note, when switching to the 5 GHz frequency, other channel numbers have already gone. But, as you can see, there are much fewer networks that are used. I use a 5 GHz network because the least amount of other routers operate at this frequency. There are a total of six networks here at the 5 GHz frequency, including mine. That is, it turns out that at the 5 GHz frequency there are many more channels that are not occupied by anything. This means there is no interference. But there are small differences from 2.4 GHz. 2.4 GHz networks are better at penetrating walls and avoiding obstacles that may be in the signal path. 5 GHz can perform much better over long distances. In my case, I simply went into the router settings and enabled support for the 5 GHz line. This gave me the opportunity not to encounter other Wi-Fi networks.

Let me now show you what settings you need to make for the router. If you do not have support for a 5 GHz network in your router, then, naturally, you will need to use a 2.4 GHz network and simply select the channel that is free according to the graph.

Router settings for stable Wi-Fi operation

Open the browser and enter one of the addresses 192.168.0.1 or 192.168.1.1 in the address bar, depending on the router model. The exact address must be written on the router itself. In my case, the router is Netgear and I am visiting the address 192.168.1.1. I go to the Wi-Fi network section and there are certain settings that allow me to configure the router to the frequencies that I need. Please note that my router supports 2.4GHz and 5GHz.

On my channel, the 2.4 GHz frequency is on channel 13. This is exactly the channel that is least loaded. You can also use channel 14 on the Netgear router. In my case, it is better to choose the 5 GHz frequency. At 5 GHz, automatic channel selection is selected.

General algorithm for setting up wifi

Thus, the general algorithm for setting up stable Wi-Fi operation is as follows:

Install the Wi-Fi Analyzer application on your smartphone
Let's see which channels are free
Go to the router's Wi-Fi network settings
Select a free channel in the settings (or set the frequency to 5 GHz, if supported)
Save the changes and reboot the router

In this lesson we will talk about what needs to be done if the Wi-Fi network has disappeared or you cannot connect to the network from a certain device?

We will look at the sequence of actions, after which you can determine what is the cause - the Wi-Fi router or the device on which Wi-Fi does not work.

We have prepared 2 options - a text article and a video tutorial. Check out both options as they complement each other.

Video tutorial:

Article:

I recently received this question:

“hi, tell me, I bought a zyxel router.. the computer works, but the laptop does not via Wi-Fi. It says an unidentified network.. what should I do?”.

As I understand from the question, the user’s PC is connected to the router with a cable and has access to the Internet, but the laptop does not connect to the router via Wi-Fi.

In this article I will try to tell an approximate sequence of actions to solve this kind of problem. As an example, I will give screenshots of the settings of my home router TPLINK models TL-WR841N.

Stage #0. The easiest step is to start by simply rebooting both devices, perhaps one of them is “a little stuck.”

Stage #1. First, you need to check the wireless access settings in the router settings: name for Wi-Fi hotspot, openness to discovery, communication standard. For diagnostics, you can remove the password and encryption on Wi-Fi.

"Network name"- this name should appear in the list of Wi-Fi networks on the laptop.

"Mode"- this is a data transfer mode setting, it is better to select it with the maximum number of modes.

"Enable wireless broadcasting"- this is a general activation of wireless mode.

"Enable SSID Broadcast"- this setting is so that other devices can detect the router. If you do not select this setting, you will end up with a hidden network that not all devices can connect to.

For diagnostics wireless connection protection can be disabled.

In other routers, these settings may look different, but for diagnostics they must be set in the same way.

Here is an example of settings for the router D-LINK models DIR-615:

Stage #2. On the laptop, you need to check in the device manager that the Wi-Fi adapter is working properly.

If the Wi-Fi adapter does not work correctly, then you need to reinstall the driver for it.

If you don’t have a driver or are in doubt about an existing driver, then you need to go to the laptop manufacturer’s website and search there.

After this you can do search for Wi-Fi networks, find your network, and try to connect to the router.

If the connection is successful, check your Internet access.

If the connection fails, check the connection to the router from another device, for example, a smartphone.

Stage #3. If there is no connection to the router from other devices (or there is a connection, but no access to the Internet), then the problem is most likely in the router.

In this case, you can check the antenna mount on the router, perhaps reset the settings or update the router firmware, then reconfigure the Wi-Fi settings and check the connection to it again. If these steps do not help, you will have to take the router to a service center or replace it with another one.

Stage #4. If the connection was successful from other devices, then the problem is most likely in the laptop.

In this case, you need to check the Wi-Fi settings on the laptop again, perhaps reinstall the Wi-Fi driver, or remove the Wi-Fi adapter in the device manager and find it again.

One of the reasons for Wi-Fi malfunctions may be OS updates. I recommend additionally checking whether OS updates were installed immediately before the failure occurred. If there were such updates, you can try to roll back them and check your connection to the router via Wi-Fi again.

The most radical method - reinstalling the OS - should be used in the very last case, when none of the software configuration options has brought a positive result.

If these steps do not help, then you need to take the laptop to a service center; the Wi-Fi module is usually made in the form of a separate board and you can try to replace it.

Stage #5. When everything works - Don't forget to set up a password and encryption for Wi-Fi on the router.

If you have questions about the article, ask them in the comments.