Why wi-fi without access. What to do if there is no Internet connection on the computer? The computer does not respond to the LAN cable connection

As you know, solving problems with wireless networks is not always difficult, but what to do if Wi-Fi connects and the Internet does not work is a very extensive and difficult question, and therefore there can be quite a lot of answers to it.

Semi-functional Wi-Fi

In general, the problem of the yellow triangle with an exclamation mark is a separate issue that can be viewed from a very large number of angles. For example, finding a way out of a situation where a laptop connects to Wi-Fi without access to the Internet can have at least 3 different directions:

• Hardware malfunctions.
• Software failures in the operating system or a third-party program.
• Mixed issues, such as driver or protocol issues.

And each direction has a certain number of its sub-directions, and so on.

If we take a purely computer direction, then most of these cases arise either due to the inept operation of the equipment by the user of a personal computer, or due to flaws and errors in the system itself, or caused by some special previous action, for example, a laptop falling. A connection problem can happen even after disassembly and not quite a high-quality assembly, but we will talk about all this in more detail below.

We will analyze the reasons for the occurrence of situations, why there is no Internet connection, in more detail and carefully.

Causes of failure

As mentioned above, the problem when Wi-Fi is connected without access to the Internet can occur due to malfunctions in various component aspects of the device. Problems can have different roots, and therefore you need to consider several systems for their gradation:

• hardware component.
• Software part.

And we will start, oddly enough, from the very last point.

In order to understand the essence of such a nuisance, one should consider the so-called map of the Internet. This is a conditional scheme that allows you to understand exactly how the Internet “moves” and through which points it passes. Understanding this circumstance allows you to relatively quickly find a place where the Internet connection "leaks" and does not go further. And this, in turn, greatly reduces the time to fix the network without access to the Internet, and gives an answer on what to do.

So, from the server of the Internet provider, access to the network comes through routers that are responsible for distributing it in a particular house or entrance. Further, from the access router, cable access is delivered to the apartment, where the tenant already decides for himself how to manage the network. This can be either a direct connection to a personal computer or laptop, or connecting a cable to a router or switch.

Since we are interested in a wireless network, we will assume that our router distributes access to the network.

Now we will consider a typical situation where the owner of the laptop goes about his online business and the pages stop loading, and the ill-fated yellow triangle is visible in the tray, that is, there is a Wi-Fi network, but there is no access to the Internet. If this happens, then the first step is to connect any other Wi-Fi device to your home network, for example, a phone. If the effect is the same, then this means that the problem is not in the laptop.

Now you should reboot the router by unplugging the power plug from the outlet, waiting 10 seconds and plugging it back in. When everything falls into place, and the wireless network starts up again, it will be possible to determine from the results what is wrong. For example, if access has appeared, then this means that there was a misunderstanding between the routers of the provider and the router and it was eliminated. In the event that access does not appear, then:

1. You need to pull out the cable that comes from the provider from the router and insert it into the laptop's LAN socket.
2. If the connection does not appear, then the problems occurred with the provider, and not with the end user. In this case, the reader needs to either call the support service and report problems, or wait a bit. It is recommended to call technical support: let them know that there is a problem and they need to solve it.
3. And if the connection has become active, then most likely there is a breakdown in the Wi-Fi router itself. It is recommended to connect the cable again and if the network does not appear, and when connected directly it works, then the gadget for creating a wireless network needs help. Deal with it yourself and change the settings and firmware or carry it to a service center - it's up to the owner of the device to decide.

Hardware component

This category includes those cases when the situation in the Internet map is as follows: the Internet connection comes to the router, other gadgets are connected to it, but the laptop, tablet or smartphone refuses to connect, and therefore notifies that it is connected to Wi-Fi, but without internet access.

However, a similar approach is also valid for software malfunctions, but here it will be precisely the technical reasons that will be considered. Of course, in most cases, if when connected to Wi-Fi, the device writes “without access to the Internet”, then the problem is in the software, applications, but anything can happen. Therefore, situations that the author of the article personally encountered will be described here. There were only two of them:

• The laptop started infrequently at first, but over time it increasingly refused to provide online access, to the point that the wireless network worked for only 10-15 minutes after the device was started. And by experience it was found that it was in this device. As expected, at first they assumed that the problem was in the programs or the driver, since if the Wi-Fi module burned out, it would simply not work at all, but it does work. As a result, it turned out that the situation is as follows: when cleaning from dust, disassembly was carried out, the Wi-Fi module was removed, and then installed, but cat hair got on the contacts. That is why the equipment worked until it got very hot, and as soon as this happened, problems began.
• In the second case, the laptop fell and, due to physical impact, the microcircuits and integrated circuit boards were not damaged, but the wireless network module was slightly skewed and began to behave approximately the same as in the first case. The only difference is that the effects were observed constantly and in an arbitrary order. Since the personal computer was new and had not been taken apart, the considerations from the previous paragraph were irrelevant. In the end, it turned out that all that was needed was to eliminate the distortion. After the module was installed exactly, the Internet connection began to behave as expected by the manufacturer.

Software or software part

Although the circumstances can be anything, as you can see from the previous two parts, the majority of problems happen precisely because of the software or software.

For example, some time ago there was a very "popular" moment with Windows 8, where the operating system saw Wi-Fi, but without access to the Internet. This happened in 95% of cases when the device was put into sleep mode, and then it was exited. The only way to fix this was to reboot. Some time later, patches were released that fixed this problem, but they did not work on all devices, and the performance was pure luck: no one knew whether it would work or not.

Then there was trouble with the transfer to the "Airplane" mode. In general, the behavior was about the same. Fortunately, these problems have now been fixed, but this happens very, very rarely. So if someone recognizes familiar symptoms, then you just need to install updates. This will help in 99% of cases.

The most common cause is either a malfunction of the driver, or its absence. In this case, the device, even running Windows 7, will show that Wi-Fi is currently without access to the Internet and something needs to be done about it.

The easiest solution is to go to the "Device Manager", open the "Network adapters" tab, select the wireless module and click on the "Update drivers" column. If the system writes that the driver does not need to be updated, then you can simply delete it. You can also remove the module itself and reboot the machine. After loading, the operating system will independently recognize the Wi-Fi adapter and install the simplest drivers on it.

I work as a specialist in the company "Techno-Master".

Let's analyze the problem situation when the phone connects to Wi-Fi, but there is no Internet. It looks like this: next to the name of the wireless network it says “Connected”, but when you try to open any site in the browser, an error is generated Web-page is unavailable or 404 Not found. Chrome still writes in such cases. The same goes for other software - all sorts of programs that use the Internet connection for their work, or at least check for updates on startup, will also give an error connecting to their web server.

In this article, we will detail how to solve the Internet problem on your computer, phone or tablet. Read carefully, follow all the steps and you will definitely find the reason why you do not have an Internet connection with a working Wi-Fi connection.

Collection of information about the problem

Before making any changes to the Wi-Fi settings of your router, computer, or phone, check the following points. This can make it easier to find the reason for the lack of Internet or narrow down the search:

• Is the Internet paid for and are the funds on the account running out?
• Is there access to the Internet by wire from a desktop computer?
• Is it possible to access the Internet via Wi-Fi from other devices that use the same Wi-Fi router?
• Does the problem with the Internet connection persist when connected to another Wi-Fi network?

Depending on the answers to these questions, it may already become more or less clear to you what the problem is most likely. Eg:

• if there is no Internet at all - neither by wire nor by Wi-Fi, then the reason may be either blocking access on the provider's side or a malfunction of the router. Next, we check with the provider whether everything is in order with the line and the account, and then we check the performance of the router.
• if the Internet is on the PC via a wire, but not on any device via Wi-Fi, then the problem most likely lies in the wireless network settings of the router. The same conclusion can be drawn if the Internet appears and works without problems as soon as you connect to another Wi-Fi network from the same device
• and if it turns out that all devices are in order, and only one does not have an Internet connection, then the problem is obviously in this “client”.

Wi-Fi is connected, but the Internet is not working. What to do?

So, if your Wi-Fi is really “connected”, but there is no Internet (websites do not load, Skype and Viber do not connect, a yellow network icon is displayed on the laptop with the notification “No access to the Internet”), follow these steps to fix the problem. The steps are listed with a probability factor.

1. Restart your router

Sometimes the unexplainable happens failure on the router . At the same time, the local network and Wi-Fi work fine, but there is no access to the Internet. This can happen when the router is running for a very long time without reboots and when there are changes in the provider's network. Just in case: it is written how to reboot D-Link remotely.

2. Reboot the device where there is no Internet connection (phone, laptop)

Sometimes on a smartphone (tablet, laptop) a certain crash (glitch), which can cause a similar problem. Visually, everything seems to be fine, but there is no Internet for no apparent reason. In order to avoid such a failure, restart the device.

3. Reconnect to Wi-Fi network

This step is very important, despite its simplicity and boldness at first sight. You need to forget the Wi-Fi network, and then connect to it again by entering the password (security key). This may resolve the issue and restore your Internet connection, for example if network settings have been changed user or virus.

4. Set the correct date on your Android device

Wrong date may be the cause of the internet problem. In this case, sites will open, but Antivirus, Google Play Store, etc. may not work. .

5. Disable Proxy Server

If a proxy server is enabled on your computer or Android device, you may also experience a situation where Wi-Fi is connected but there is no Internet. Usually this problem occurs on Android.

6. Check the Internet connection settings on the router

Go to the WAN or Internet settings on the router. (). Check to be specified correct connection settings , such as:

• type of connection with the provider (see the contract or on the provider's website);
• login and password, if required (see in the contract);
• whether the MAC address is correct (check in the contract. If you reset the router, you may have to go to the ISP's office with a passport and contract and ask to register a new MAC address of the router's WAN port).

If your provider uses a PPTP connection, and the settings on your router have gone wrong and now IPoE (dynamic IP) is selected instead of PPTP, then naturally the router will not be able to connect to the Internet. In this case, the sites will not open on any device.

7. Change your wireless channel

Wireless equipment that is in the vicinity and operates on adjacent channels may create interference your router. Try changing the Wi-Fi channel.

And it would be even better to first check which channels are freer. This can be done using the Android app or InSSIDer for Windows.

8. Install WPA2-PSK + AES encryption for your Wi-Fi network

The WPA2-PSK encryption algorithm is the most secure. AES encryption ensures high speed and security. Most devices, even not new ones, successfully work in WPA2-PSK mode with the AES algorithm.

Wi-Fi Connected But Internet Not Working: Other Causes of the Problem

Weak signal

If there is too much distance from the client device to the router, there may also be such a problem: the device has received an IP address, but there is no Internet. Therefore, you first need to check if the Internet appears when approaching the router (if possible). Then - if the problem is precisely in the distance - somehow try to reduce it. If your router is yours, place it in the middle of the house.

Some organizations provide free Wi-Fi, but in order to be allowed on the Internet, you need to launch a browser, enter a password or go through some other authorization procedure. For example, specify a phone number and enter a code from SMS. It is better not to contact such networks and do not enter any information about yourself in order to avoid problems. It is much easier to find another access point without such nuances.

If you've done everything but still don't have an active Wi-Fi connection to the Internet, there's another option: set up a static IP address. This method is not a solution in the full sense of the word, but in some cases it helps to get around the problem and gain access to the Internet. To do this, on your smartphone, call the properties of connecting to a Wi-Fi network, check the box Show advanced options and select Static IP:

I hope this guide helped you identify and fix your Internet connection problem and now all your devices are online, both wired and wireless. Questions and additions to the article, please write in the comments.

There are several reasons why there is Wi-FI without access to the Internet. Often problems lie in routers and access points, but there are also cases when services installed in the operating system are to blame for the malfunction.

How to recognize the cause of the problem, read on.

Determining the problem

First you need to find out at what stage of the connection the problem arose. In order to make sure that the problem is with the router settings, you must try to connect to the Wi-FI network through another Windows laptop or smartphone.

If the error disappears and the Internet connection is present on another device, the user will find out that it is necessary to configure the Wi-FI adapter in the laptop itself.

In the event that access to the network was not obtained from any device, it will be necessary to look for problems in the router, access point, modem or Internet provider.

It is also worth trying to connect the network using a network cable, bypassing routers. This will allow you to identify problems more specifically.

If there is access to the Internet via cable, then it is worth changing the settings of the router or access point itself, if not, the problem is in the modem (if any) or provider.

Disabling network access on the provider side

Sometimes, for reasons of malfunction or maintenance, a yellow triangle can be observed, which notifies the user of a limited Internet connection.

In the case when the equipment settings were not performed, but access, nevertheless, was lost, most likely the problem is on the provider's side.

In this case, you need to find the company's phone number, which is usually recorded in the contract, and, by calling, inquire about the causes of the malfunction.

Advice! But do not immediately rush to dial the operator of your provider, first reboot the router, since technical support will offer to do this in the first place.

If the resource is loaded and access to your personal account is obtained, this will mean that the Internet connection is limited by the provider intentionally, possibly for non-payment.

In the event that the site does not work, it is worth going to a call to the technical support operator.

Operating system settings

If access points are visible in the system on a laptop, you will not need to reinstall the driver.

When the Wi-Fi adapter is successfully connected to the network, but there is a yellow triangle in the system tray, indicating a limited Internet connection, you need to disable the antivirus and Windows firewall, which, if configured incorrectly or if they fail to work, can cause a similar problem.

The best option for checking the health of the Internet is to boot the system on a laptop in safe mode with support for network drivers.

To do this, you need to go to the system settings by pressing the key combination in Windows "Win + R" and run the msconfig request.

This will open the System Configuration window. In it, you need to go to the "boot" tab, where you need to mark "safe mode" with the "network" parameter.

If with this option you have access to the Internet, you need to start the laptop in normal mode, removing the previously set parameters, and then turn off applications that affect the network one by one. Most likely, these may be recently installed or updated programs.

You also need to scan your computer for viruses. The best option for this is Dr.WebCureIt! For Windows, since it does not require installation, it is free and always contains an up-to-date database.

Setting up a router

If Internet access is not available on several devices, the problem is in the settings of the router, which distributes the connection incorrectly. It can occur when resetting the settings for the current provider.

To restore them, you will need to open the description for setting up on the website of the company that provides the Internet. Also, all the necessary parameters for entering into the router are often attached to the contract concluded when connecting services.

In the event that the router was bought independently of the provider, the instructions for it, most likely, will not be present on the site. It will need to be found on the resource of the equipment manufacturer. Also, the documentation is always present in the box with the router.

The sequence of actions for making settings on the D-Link DIR-600 router:

• open the parameters by entering its IP into the address bar of a Windows browser or other OS;

• enter your username and password (the default value is admin);
• in the wireless network wizard, configure the name and password of the Wi-FI connection;

WiFi network name

• by going to the tab in the lower horizontal menu "Advanced settings", click on the WAN item, located in the network section;
• if there is a connection profile, double-click on it to make settings; if it is missing, add a new one.

• in the window that opens, make and save the settings that are specified on the manufacturer's website.

Also, for this router model, a simpler configuration option is available by clicking the Click’n’Connect item in the main menu. However, it may not work correctly with some providers.

Access restriction on public routers

Coming to some coffee shops and connecting your laptop to Wi-FI, you should not run programs for downloading torrents, as the network automatically turns off and is no longer restored even after the router is rebooted, but access will be reopened only after a day.

This restriction is set so that visitors do not overload and without it not too high-quality access to the Internet.

The installed traffic filtering system adds the mac-address of your Wi-Fi network adapter on the laptop to the blacklist for some time. But there is still a solution to this problem.

Since we do not have access to the coffee shop equipment, the only option left is to replace the mac-address on our equipment.

Change mac-addresses Windows

On most hardware with the Microsoft Windows operating system, the best option for changing the Mac address is to edit the registry. Despite the visual complexity, it will not take much time.

Creating a New Registry Value

• create a string parameter in this folder with the name NetworkAddress;
• by double-clicking on it, add the value of the new mac-address, represented by 12 hexadecimal digits (for example, "406186E53DE1");
• restart Windows to apply the settings.

After that, the adapter will no longer be blacklisted, and therefore, it will be possible to successfully connect to the Internet.
conclusions

There are many problems and solutions for them. Finding out exactly which equipment failed to work, it will be possible to find the best way to fix the problem.

Today I will consider a situation that users of operating systems very often face. Windows 7 And Windows 8. The essence of the problem is as follows, there is a network connection, but Network and Sharing Center writes that the Network without access to the Internet, the network icon in the tray has about a clock Exclamation point. In this case, in fact, the Internet may even be available. There may be several reasons with different scenarios. Let's take a closer look at each of them.

But first of all, if you are connected via modem, router or ONT optical terminal- I would advise reload it. If, after rebooting the device, Internet access resumed, the problem is definitely in the router itself, its settings, or the provider's network (it happens sometimes). In this case, we reset the router with the reset button, configure it again and check. If anyway after a while a message appears that Network without Internet access- try another router to check.

1. WiFi network without Internet access

This is the most common situation. The reason for this problem is most often the following. The vast majority of users are not aware at all what is an IP address and believes that for WiFi connection just enter the network security key. In most cases, this may indeed be enough, but not always. If on WiFi router disabled protocol DHCP, then you can easily connect to the network, but here IP address your wireless adapter on your laptop, tablet, or smartphone will not receive. Accordingly, you will not have access to the Internet, although the network is actually connected, but only partially.
By the way, this is also possible with a wired connection - the cable was plugged in, but the address was not received.
What to do? Enter the IP address manually. To register ip in windows 7 or Windows 8 you need to do the following:
Let's go to Control Panel and click on the icon Network and Sharing Center:

In the window that opens, click on the link Change adapter settings. You will see a list of network adapters. Right-click on the network adapter through which we connect to the router and select the menu item Properties:

You will see the network card properties window. Choose an item Internet Protocol Version 4 (TCP/IPv4) and double-click on it with the left mouse button. Here it is necessary write IP address, netmask, gateway and DNS address:

For most routers (except D-Link) should fit the following:
IP address — 192.168.1.2
mask — 255.255.255.0
Gateway — 192.168.1.1
primary DNS — 192.168.1.1
secondary DNS — 8.8.8.8
For D-Link routers:
IP address — 192.168.0.2
mask — 255.255.255.0
Gateway — 192.168.0.1
primary DNS — 192.168.0.1
secondary DNS — 8.8.8.8

2. There is Internet access, but still writes Network without Internet access

This problem is most often occurs when a computer is connected to the Internet through a proxy server . That is, there is Internet access, but it is, as it were, not direct, but through a server.
In this case, you can do the following:
We press the button Start select item Run(or press the key combination Win+R ) and in the window that opens, write:
gpedit.msc
You will open Local Group Policy Editor.
Local Computer Policy → Computer configuration → Administrative Templates → System → Internet Communication Management → Internet communication settings and turn on the parameter:
« Disable active probing for network connection status indicator «

Internet connection problems can occur under various circumstances. The cause may be cable problems, incorrect modem or router settings, or problems that arose directly from the provider providing Internet access.

All problems, with the exception of the last one, can be fixed independently. To begin with, the main thing is to understand what specifically caused the malfunction, further actions will depend on this.

What means

Often when you turn on the device, you may find that there is no connection.

The following signs indicate this:

The list contains the most common symptoms. The presence of one of them indicates that there has been some kind of failure in the network settings or hardware. To eliminate it, we first find out the cause.

Causes

If your device works via WiFi, then first of all you need to check the router.

In this case, the reasons may be the following:

1. failures in the power supply of the router associated with overload or cable defects;
2. problems in the software (for example, the wireless connection driver has crashed);
3. malfunction of the router itself (the contacts on the microcircuit burned out, the socket was damaged, the firmware flew off).

The same problems can occur with a modem and a wireless network adapter (most laptops have it built-in). Often, an error can occur in the operation of the program provided by the Internet service provider. But the faults don't necessarily originate in the Internet connection hardware.

Causes not related to the modem and router:

Having figured out what became the cause, you can begin to eliminate them.

Solutions for "no internet connection" error

The first thing to do is to let the computer solve the problem on its own. Find and right-click on the network icon or WiFi access icon in the lower right corner of the screen and select Troubleshooting.

After checking, a notification about the results will appear in the window that appears. Sometimes such actions immediately solve the connection problem, but if the system has not detected any problems, you will have to find out on your own why there is no Internet connection.

Do the following:

1. check all connected cables and the sockets in which they are located (the modem or router must be connected to a working telephone line, and also correctly installed to your computer or laptop);
2. reboot the router or modem, or reset their parameters with the button (in extreme cases, you can turn off the power for a few seconds);
3. check the additional software for the modem or router (usually comes with a driver disk).

However, the problem may not always be so simple, and much more serious actions will have to be taken to solve it.

Video: what to do if there is no Internet connection

Change the way you connect to the network to Dynamic IP

An IP address is a kind of user passport for accessing the Internet. Changing the connection method is necessary in cases where the computer can directly connect to the network, but gives an error through the router, or does not connect at all.

This may be due to an address conflict.

Procedure:

Changing the IP address of the router

The router participates only in the operation of the local network and does not go beyond it, so it can be assigned absolutely any IP address. However, this does not exclude the possibility of IP address conflicts.

Procedure for the routerTP-LINK:

MAC address cloning

A MAC address is a unique identifier for a network card. Meeting two identical MAC addresses at the same provider can cause errors and lead to the fact that one of the users will not be able to connect to the Internet.

The problem can occur both in the address of the router and in the address of the network card of the computer.

For the first case, you must do the same as for changing the IP address of the router.

After you have entered the configuration service, different actions follow for different routers:

In order to change the MAC address of a computer or laptop, you first need to:

Change MTU (Maximum Allowed Packet Size)

maximum transmission unit– maximum packet size of data transmitted over the network.

Designated for:

1. the need to reduce the time for information transmission in case of packet loss or its defects;
2. reducing the waiting time to send subsequent packets;
3. insufficient for large blocks of information network buffers.

For an ordinary user, the need to change the value appears extremely rarely, but if the connection problem has not been resolved, and there are no other possible options, then you have to get here.

You can set the packet size:

1. via the command line (using the ifconfig command). By default, it has the largest possible size in order to achieve maximum performance;
2. in order to change it, go to the command line and enter the following:

• ifconfig fddiO 172.16.16.1 netmask 255.255.255.0 mtu 1500 where the last number specifies the maximum allowed packet size.

Any connection problems on your side can be fixed with your own hands, but sometimes unforeseen situations happen that so many specialists can handle. If this article did not help you, try contacting your ISP for help.