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Why does Wi-Fi go out? Why did WiFi disappear on my laptop? Causes

Wireless routers make using the Internet much more convenient. Wires do not get tangled underfoot, and the laptop can be installed in any convenient place. However, sometimes the connection begins to act up, which causes great sadness for people who are used to spending a lot of time on the Internet. Why does the Internet on my laptop disappear via WiFi? How to determine what exactly is the cause of the malfunction? Can I solve the problem myself? Let's take a closer look at what to do if WiFi on your Windows laptop 7 or 10.

How to find out that the problem is in the router

First of all, the “prime suspects” must be ruled out. Therefore, if WiFi has disappeared on your laptop, you need to try connecting to the wireless network using any other gadget. For this you can use a mobile phone, game console or tablet. If there is no wireless network signal on any device, then we can confidently say that the problem lies in the router itself.

Based on this, it is easy to come to the conclusion that in a situation where the Internet will work properly on third-party gadgets, the cause of the breakdown is related to the operation of the laptop computer.

Laptop problems

If the router works well, then you should switch directly to computer equipment. On a laptop, the Internet via WiFi disappears in this case for several reasons. If the laptop does not see any available connections at all, then it is recommended to check whether the module is disabled wireless communication on laptop computer. As a rule, the operation of this unit is indicated by a corresponding light indicator located on the laptop body. If the light is not on and WiFi is lost on the laptop, then you need to connect the module yourself.

To do this, press a certain key combination (usually Fn+F2, but it all depends on the device model), after which the required node will be forced to turn on. Also, on some modern laptops, the button to turn on the wireless connection is located on the laptop body. In this case, you need to find it and click.

On some laptops it is completely absent. What to do in a situation where WiFi on a Windows 10 laptop is lost? In this case, you need to go to the section called “Networks and Internet”. Next, just find the wireless connection tab and see if the corresponding module is enabled.

What should those who lost WiFi on their Windows 7 laptop do? In this case, the described method will not work. Then you can connect an external keyboard to the laptop’s USB connector, which has the coveted Fn key. If you don’t have such a device at hand, then it is recommended to use a little trick. Every system has an on-screen keyboard. To activate it, just click on the “Start” button and enter the corresponding query in “Search”. After that all you have to do is click on on-screen keyboard combination with the Fn button.

If the problem occurs after reinstalling Windows

If WiFi has disappeared on your laptop, it’s worth remembering your latest actions. The OS may have been recently reinstalled. In this case, sometimes all default settings are reset.

To correct the current situation, it is necessary to hardware enable. It is performed using the same technology for all versions of this OS. To connect the network module, just:

Go to “Network and Sharing Center”.
Select "Change settings".
Find in the list that opens desired name wireless network and right-click on it.
Select “Enable” in the list that opens.

If after these manipulations the situation has not changed, then perhaps in order to answer the question “Why does WiFi disappear on the laptop?”, you will need to check the functionality of the router drivers. This is a fairly common problem that can occur at any time for no apparent reason.

Checking the Wi-Fi driver

Regardless of the laptop brand, after connecting the router for the first time, the corresponding software. Based on this, it’s easy to guess that the router should be in the list of devices in the “Device Manager”. It will appear there regardless of whether the drivers are correct. To update them, you just need to perform a few simple manipulations:

Click on “My Computer” with the right mouse button.
Select “Management” from the drop-down menu.
Go to "Device Manager".
Find the section called “Network Adapters” and find the router you need.

As a rule, a warning sign is displayed next to a module that is not working correctly. In this case, you need to right-click on it and update the current drivers.

Usually the system finds them in automatic mode through the Internet. However, when the WiFi on the laptop is lost, this will be somewhat difficult to do. You need to download drivers from the manufacturer's official website using another device. After this, you should save the files on your computer and try going to Device Manager again. Only in this case it is advisable to choose not automatic search drivers, but indicate the address that will lead to the folder with the downloaded files.

Antivirus

This problem is extremely rare, but it should not be ruled out. Some antivirus programs check the strength of the router's signal encryption and conclude that it is weak. In this case, the antivirus may block the module for security reasons. Therefore, it is recommended to add the router to the exceptions. Or you can try disabling the antivirus for a few minutes and connecting to the wireless network again.

Obstacles to the signal

If there is no connection to the network since moving to a new apartment, most likely something in the room is blocking the operation of wireless waves. If the router is installed in a separate room, then perhaps the walls are too thick for signal transmission or the reinforcement elements are too massive.

Everyone knows that the level of communication quality is indicated by a triangular icon with several dots on it. The more there are, the better the signal. Therefore, after moving, it is recommended to pick up the laptop and walk around the apartment with it. If only 1-2 marks are displayed in any place on the screen, it is better to stay away from that area. Here the signal will be simply disgusting.

In addition, you should avoid other obstacles between the laptop and the router. Therefore, it is not recommended to place the router behind a TV or microwave oven. However, sitting too close to the router is also not advisable. This can also negatively affect signal strength.

If all else fails

When everything has been tried, all that remains is to use the simplest remedy, which often helps in a wide variety of situations - reboot the computer and the router itself. In this case, the router must be disconnected not only from the network cable, but also unplugged from the power supply. After turning it back on, Internet distribution will not start immediately, so you should wait a little.

You need to check with your Internet provider to see if there are any renovations going on in the house. This may also result in signal loss.

Users latest version Operating systems with index “10” from Microsoft are already accustomed to encountering various system problems. Constant failures have rallied supporters of the “Ten”, and they generously share among themselves proven methods of solving problems.

One of the most common difficulties is regularly disconnecting the PC from the wireless network. Below are instructions for effectively debugging Wi-Fi connections on laptops and computers running Windows 10, which have proven to work in practice.

Proven troubleshooting techniques

For beginners who find it difficult to accurately diagnose the cause of a failure, it is recommended instructions below To debug the Wi-Fi connection in laptops and PCs on Windows 10, apply in the order described.

Experienced users can troubleshoot problems by selectively following one or more of the instructions described in this manual.

Note: If wireless network connections fail periodically, not only on one personal computer with Windows 10, and on all devices connected to home Wi-Fi, you will need to solve a problem related to the operation of the router.

Wi-Fi profile updates

If Wi-Fi turns off on a laptop or PC running Windows 10, you should first delete the Wi-Fi profile, which will update it.

This can be conveniently done using “KS” ( Command line), by running the command: “netsh wlan delete profile name=”. Next, reconnect to Wi-Fi by entering the correct name and access code.

Changing your laptop's power saving mode settings

In Windows 10 laptops, the Internet often turns off after reaching a certain level of residual charge. battery, due to the power mode settings. This automatically deactivates the Wi-Fi adapter, making it impossible to connect to the wireless router.

The following steps must be followed:

On some PCs with Windows 10, performing the above steps is not enough and you still need to additionally set the maximum performance of the Wi-Fi module.

To do this you just need to take a few steps:

Disabling TCP_IP autoconfiguration

In the "Ten" the auto-tuning function has been activated to increase operating efficiency network channels However, in laptops this new tuning from Microsoft causes connection problems. This is why almost all users are forced to disable the setting using “KS”.

– “netsh int tcp set global autotuninglevel=disabled”;

– “netsh int tcp set global rss=enabled”;

– “netsh int tcp show global”.

6. Done. Now you won't be disconnected from Wi-Fi.

If the problem persists, you will need to continue following the instructions in this guide.

Driver rollback

Tens users constantly continue to encounter difficulties after updating the software. The procedure of returning to a previous software modification can return the PC to a working state.

To roll back a driver network device, you will need to do the following:

If the problem remains even after rolling back the drivers, then open the equipment manufacturer’s website and install the latest software modification from it. This procedure is free, so it is not advisable to use third-party resources to update drivers. A common cause of connection difficulties is incorrect versions of installed software from third-party sites.

In this article, I will try to answer a very popular question, which in most cases is difficult to even explain. People often write to me in the comments about some problem with Wi-Fi, I read the question several times, but I can’t understand anything. And to answer the question, I answer with several questions :) to understand what the problem is and to clarify necessary information. Let's talk today about the unstable operation of the Internet when connected via Wi-Fi.

Let's try to figure out what exactly this connection instability is, what the problem might be, and what can be done to solve problems with the wireless network.

There are times when the Internet does not work as it should. For example, you connected the Internet to your computer via a network cable. Bought and installed wireless router, and began to connect to the Internet via Wi-Fi. And they began to notice that the Internet was somehow not working right, it was constantly cutting out, the speed was low, etc.

I’ll probably now highlight problems that can be attributed to unstable operation of the wireless network. This way, it will be easier for us to navigate the problem itself and a possible solution.

Frequent connection interruptions. For example, you connected a smartphone, and after a while it turns off by itself. Or a laptop that constantly disconnects and connects. I've seen cases where the connection was lost for a few seconds and was immediately restored. This is not always noticeable, but if you have Skype installed, its connection status is constantly changing. Or a yellow icon appears next to the connection icon. Here is another article on this issue: ““.
Low speed internet connections, or speed spikes when connected via Wi-Fi. It may be that, for example, during the day the speed is normal, but in the evening it drops significantly (if connected via cable, the speed is always stable).
Unstable Wi-Fi connection. This may include a large number of connection problems. For example, when a device connects to the network for the second or third time. Or, only in a certain place (for example, near the router, I already wrote about this problem ) .
When you notice some problems, but not always. For example, the Internet works fine for several days, and then strange problems with Wi-Fi begin again. Or, as I already wrote, everything is fine in the morning, but in the afternoon the connection is unstable.

This list can be continued, but I think the essence is clear. I would just like to exclude from this list popular problems that have their own characteristics and about which separate articles have already been written:

Error “ ” on computers, or when the connection is on mobile devices I have, but .
Errors on mobile devices: , and " ".

Solving the problem with unstable Wi-Fi

I have some kind of universal solution. And some special settings, with which you can adjust the stability of operation, are also not available. You need to try and find a solution. I will give some tips that should help you in this difficult matter.

Reboot your router and laptop (smartphone, tablet, etc.).

This is the first thing to do. Just turn off the power from the router and turn it back on. Also, reboot the device that you are trying to connect to the network, or that is experiencing some problems.

You need to understand what the problem is.

Everything is simple here. We need to find the culprit. This could be either your router or the device itself (computer, smartphone, etc.). How to do it? Just try connecting other devices to your network (preferably those that work on the same operating system) . If the problem persists, then most likely the problem is with the access point. And the problem must be looked for in it.

If another device connects and the Internet works stably, then most likely the problem is in the device itself (with which there were difficulties). I’m already confused myself :)

Make sure the Internet is working directly.

What does direct mean? This is when it is connected without a router. Network cable straight to the computer. Perhaps there are some problems on the provider's side. And you are already torturing your router and other equipment :)

Change the channel your wireless network is on.

It is necessary! If there is interference on the channel on which your Wi-Fi is operating (in the form of wireless, neighboring networks), then a variety of incomprehensible problems may arise in the operation of your Internet connection, which are even difficult to explain. Read the article about how to change the channel. This is probably the most important and effective advice.

We update the software on the router.

Afterword

If nothing works, write about your problem in the comments. Try to describe the problem in as much detail as possible. We'll figure it out together.

If you have anything to add to the article, I will be only grateful. Best wishes!

Purchased a laptop, phone or tablet. A portable device is specifically selected to access the Internet via Wi-Fi in any accessible location. However, an unexpected difficulty arises: for some reason the connection suddenly disappears. What is the reason? Let's figure it out.

A sharp and sudden disconnection of the wireless network can happen due to several reasons. They are presented below:

Wi-Fi coverage may disappear due to the fact that one of the functions of any modern device, whether it's a laptop, tablet or phone, is to save battery power.
An important reason may be the presence of a weak Wi-Fi signal.
Another reason is unexpected driver failures, including the driver responsible for the high-quality operation of the wireless network.

However, whatever the reasons why Wi-Fi turns off, they are all fairly easy to fix. It is only important to be able to make the necessary settings or reinstall the driver. In this case, it is best to download the driver from the manufacturer’s official website, otherwise serious problems with Wi-Fi operation may occur. Let's talk about solutions to problems in more detail.

What to do if there is a weak signal or sources of strong interference?

This factor is quite common cause turning off Wi-Fi connection. Needless to say, this coverage is based on radio signals that can be shaken. It’s worth saying directly about the signal level that it is not always stable. It is influenced by several factors, the most significant of which is tension in electrical network. A wide variety of electrical devices are involved in creating interference, which can sometimes be so strong that it prevents the Wi-Fi signal from spreading.

The presence of metal objects between the portable device and the router can be even more disruptive. If the laptop is located at a fairly large distance from the signal propagation point, it may periodically disappear. Therefore Wi-Fi turns off. As already noted, the signal is not stable.

When a laptop, phone or tablet is placed close to the router, the vibrations are unnoticeable, but when moving away they begin to become more pronounced, and eventually the Wi-Fi connection is interrupted. Communication has a particularly negative impact mobile phones or microwave ovens. You can fix the problem by moving the laptop closer to the wireless router.

Problems caused by battery saving

As you know, one of the fundamental functions of any laptop, tablet and phone is autonomous operation, which is achieved due to high-quality battery saving. In this regard, the developers created special program, which allows you to save energy and which automatically turns off for a long time unused modules.

The same goes for Wi-Fi adapter. It is quite possible that it will turn off spontaneously if it is not in use. However, it happens that the program gives certain glitches and, as a result of an unstable connection with Wi-Fi, the adapter turns off after a certain period of time, regardless of whether it is needed this moment Internet connection or not needed.

You can solve the problem described by disabling the mentioned option. To do this, you need to pay attention to the battery icon in the lower right corner of the screen. Having selected it, you should go to “Additional battery recharge parameters”, and then set the optimal recharge plan. Here it is quite possible to experiment until the optimal plan is found.

Finally, you need to select the “Edit” icon. The Energy Saving Modes window appears. Here you need to set maximum performance both when operating on battery power and when operating from the network. Thus, automatic shutdown The Wi-Fi adapter will become inactive. As a result, Wi-Fi will not suddenly disappear.

However, what if all the work has been done correctly, but the Wi-Fi connection still keeps disconnecting? This means that the operating system itself has power saving settings. This function can be disabled using the Control Center. wireless networks and general access." All you need to do is right-click on the “Wi-Fi” icon. Then you should select the required pop-up sub-item - “Change parameters”. Here you need to find the wireless connection shortcut and right-click on it. In “Properties” you should select “Network”. Then you should go to “Settings” and select “Power Management”. Here you should uncheck the box “Allowing a device to turn off to save power”.

Wi-Fi on the laptop has disappeared and there is a red cross everywhere - this is the most common error. Although problems with wi-fi connection Any user of modern devices has ever experienced access 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. Today we will look at the most common problems wi-fi connections with 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 are almost one hundred percent likely to help detect software reason no signal.

If your gadget is running a less popular OS, such as Symbian, windows mobile or even some kind of “homemade Chinese OS” software diagnostics it is impractical to carry out, 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 kernel.

What to do if wifi disappears on a Windows laptop

Reasons for loss 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 initiation key BIOS boot it 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 in your BIOS version there may not be an option turn on 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 find “ 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 workload 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 Internet provider and ask if they receive feedback from your router (when it is turned on and working). 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 current version iOS.
If 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 some specific device, try clearing your 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 it is turned on wifi mode. 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 access on the Internet, and ways to solve them were also proposed. 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 service center, since you (most likely) will not be able to fix the problem at home.