Internet is connected but not working. Installing a discrete network card. Wi-Fi is connected but the Internet is not working: Other causes of the problem. Computer network card drivers and disabling LAN in BIOS

We have become practically dependent on the Internet. Without it, we cannot spend our free time calmly, communicate with our acquaintances, search for information. Often the Internet becomes simply an integral part of our lives.

And of course, in situations where for some reason the Internet connection is interrupted, we are overwhelmed negative emotions. There is a desire to find and fix the problem that could lead to such a shutdown as soon as possible.

In this article, we will try to make life easier for those who may suffer a similar sad fate. Let's just look at a few situations in which the Internet connection may fail, as well as give advice on how to restore it. And, of course, here are some common reasons why there may be problems with the Network.

No internet connection. First steps

Imagine a situation in which you do not have the Internet. Do you understand that you would like to go to your favorite social network, watch a movie or perform any other action, but instead sit "waiting for a miracle." The first step is to establish at what stage the error occurred. Here you should answer a number of questions and conduct several tests.

Have you had Internet before, or is this its first launch after some updates? If the answer to the first part of the question is yes, then your task is to find the very changes, after which access to the Web was lost. Otherwise, if you have changed something (for example, changed the router), you need to look for the cause of the problem, which is quite obvious, in it. In this article, in order to learn how to establish the cause of the loss of Internet connection, we will analyze all the nodes in stages and characterize what questions may arise at each stage.

Provider

First of all, of course, the cause of the loss of the Network can be an error on the provider's side. This is the initial link of our "network chain". The reason for the loss of Internet access, in this case, may be, for example, non-payment for the next period of use. However, we will not talk about this in this article, since such problems are too commonplace to focus on them.

Diagnosing an error with a provider is not difficult - just remember if this has happened before; ask your neighbors who have the same internet if they have access; consider if you changed anything in the system that could lead to a situation where there is no Internet connection.

Of course, if the whole thing is really a mistake on the provider's side, you can't do anything - you just need to wait or use the services of another company if such a disconnect occurs too often or lasts a long time.

Modem

Often situations arise when access to the Network is lost along with the fact that the modem signals some kind of error. Then you need to turn to it - find out what exactly these or other signals on the device mean; try to understand why the connection has disappeared. The most common problems in such cases are problems with connecting elements (wires, adapters, weak contact somewhere at the input). Check them, disconnect and reconnect, and if possible, rearrange, replace with new analogues. After that, it will be clear what the cause of the problem is - in the modem itself or in the wires that directly serve to transmit the signal.

If the matter is in the wires, then replacing them with new ones will not be difficult; if it turned out that the problem lies in the modem, we recommend that you contact it in service center. However, as a rule, the modem itself should not fail for no apparent reason. Perhaps a part of the board burned out in it, or the device was damaged, but then this should have been preceded by the modem getting wet or its failure. Thus, by remembering such events, you can unravel why there is still no active connection to the Network.

There may also be a situation when an Intertelecom (Sprint) wireless modem is used to connect to the Network. “No Internet connection” - Windows XP may display this message in this case, for the reason that the system simply does not have the appropriate drivers to “see” this device and recognize its signal. The problem is solved by a simple installation software appropriate for this modem. Finally, if this does not help, check the technical serviceability of the device; try to remember, after which an error could occur, whether there was any damage, and so on.

receiving device

If everything is fine with the provider, and your modem is functioning perfectly, you need to pay attention to the device itself, which is used to receive the signal. Everything is simple here: if you reinstalled the operating system, then, obviously, the message: “No Internet connection” Windows 7, delivered instead of Windows XP, displays precisely because of the lack of proper settings. There is no need to panic. The only thing that is required of you is a little time and, preferably, access to the Web on another device to search for tips and answers to your questions on sites and forums. And the solution to the problem will be a simple setup of an Internet connection, which is carried out as required by the type of connection used. Dial-up access, for example, often doesn't need to be configured at all; on the other hand, establishing a connection through a VPN service can seem like a rather daunting process.

If we are talking about accessing the Web on a mobile device, for example, and the phone or tablet says: “No Internet connection”, you just need to know the key WiFi networks and her name. You can see them in the router settings. If you are concerned about the mobile Internet, then you need to configure it by entering the data of the access point. You can learn them, again, from the operator or communications consultant. Also, service providers often offer an automatic package of settings to simplify the user's task.

router

If you understand that the device works flawlessly, there are no problems on the side of the provider and the modem, and the router does not want to connect to the Network in any way, it is obviously in it. Firstly, in this case, you need to install, after which WiFi disappeared. The Internet connection could also be lost if the device was somehow damaged, its settings changed. If the matter is in the settings, carry out the procedure for entering the necessary parameters in the software part of the router again. In case of mechanical damage, the device must be taken in for repair.

Again, if the message “No Internet connection” (via WiFi) is displayed by Windows 7 after the operating system has been reinstalled, maintaining the new settings is mandatory. To understand if this is the only reason, you can also find out by using another computer if the problem also applies to it.

If there is no Internet connection through a router, but at the same time, no one touched the operating system, go to the device settings (using the address 192.168.0.1 or 192.168.1.1). For authorization, use the admin login and password and see if the router connects to the Network, if you entered the Internet login data correctly, and so on.

Examination

If you see the message: "No internet connection" (via WiFi), Windows 7 with its diagnostic tools won't help much. As practice shows, she gives the most vague advice in order to cover the widest range of possible problems. And you need to find and eliminate a specific cause, so we recommend checking each link as described earlier. In a practical way, even without special knowledge, you can set up your Internet, or at least find what the problem is and determine how to solve it.

Nothing helps

Of course, there may be situations when none of the above tips helped, you know what the reason is, and Windows 7 continues to display the “No Internet connection” message. What to do in this situation? Contact your ISP support! There you will be consulted and will be given an answer to the question of what is the cause of the problem.

Master's call

A way out of the situation can also be a call to the house of a master (specialist from the provider). However, you must admit that sometimes solving a problem on your own can bring more pleasure than the error “No Internet connection” eliminated with the help of a competent employee through a router.

There is always a reason

And finally, we present main advice, which you need to remember in any situation when you yourself are trying to find the reason for the lack of an Internet connection. There is always a reason! Remember this phrase when you think that the connection to the Network has disappeared “by itself”, and you still don’t understand what happened and what you should do now.

When you first find out where the failure occurred, what prevents you from connecting to your provider's service, at what stage the error was made, and only after that look for an answer to the question of how to fix the problem. In this case, of course, it is desirable to have Internet access from another device (for example, from mobile Internet on the device, unless the same tablet says: "No Internet connection", or a neighbor's computer), in order to look for explanations for your situation on various forums and sites. After all, no matter what mistake you have, there are at least a few hundred more people in the world (if not more) who have already encountered it and managed to discuss it to the smallest detail.

If devices connect to a Wi-Fi network, but the Internet does not work, you need to determine the cause. The problem may be in the Internet connection itself, in the router or laptop (or other connected gadget).

First, you should check if the Internet is working at all. To do this, the network cable is connected directly to the computer. If the Internet connection does not appear, you should contact the provider. Otherwise, check the settings of the router and devices connected to the wireless network.

To understand that the problem is not in a specific laptop or other connected user gadget, you need to connect other devices to the router, such as a phone, tablet, etc. If other devices also find Wi-Fi, but after connecting the network without access to the Internet (this is indicated on a laptop), sites do not load, then the problem lies in the incorrect settings of the router. If the connection is successful on other gadgets, the sites are loading, then the problem is in connecting a specific device.

How to solve a problem with a laptop, smartphone, tablet.

If only one device says " Unidentified network, no access to the Internet", You need to double-check the settings for the wireless connection to the network. When setting up the router, the user could accidentally change the connection data. You can check the correct settings on a laptop or computer as follows:

1. You need to connect to a Wi-Fi network.

2. Go to the Network and Sharing Center.

3. In open window On the right panel, click "Change adapter settings".

4. In the open window, right-click on "Wireless Network Connection" and select "Properties".

5. In the new window, select "Internet Protocol Version 4 (TCP/IPv4)" from the list and click "Properties".

6. In a new window, check if the items “Obtain an IP address automatically” and “Obtain DNS servers automatically” are selected. Check them if necessary and click OK.

7. Reboot OS. After the reboot, the Internet connection should appear. If the network, as before, without access to the Internet, it is possible that anti-virus programs or Firewalls are blocking the connection. Then you should turn them off.

How to solve the problem with the router.

Before setting up the router, you must first return to the factory settings. To do this, press the button on the back of the router and hold it for 10 seconds. After that, you need to go to the admin panel. To do this, enter the following address in the line of any Internet browser: http:// or http:// (TP-link, Dlink). In the window that appears, enter your login and password to enter, usually admin and admin. To fix the router, you need the WAN tab. Here you configure the Internet connection that connects to the router. SND providers use Dynamic IP, Static IP, L2TP, PPPoE, PPTP connections.

For example, Kyivstar uses Dynamic IP, the appropriate settings are set in the WAN section of this provider. If the provider uses another connection, for example, Static IP, then the setting with Dynamic IP will not work; the router will not connect to the Internet in this case. To set the correct settings, you need to find out which connection technology the provider uses. This information can be clarified with the provider itself or viewed on the Internet.

Sometimes providers create a binding to the MAC address, which can also affect the operation of the router. In this case, you need to connect the router via cable to a computer whose MAC address is registered with the provider, find the MAC Clone tab, click Clone MAC Address, and then Save. Update.

There are also situations of the following nature. The user decided to change Windows 8 to Windows 7. Before reinstalling, everything worked fine, but then problems began with connecting to the wireless network, the message “Unidentified network” appeared, that is, the Internet stopped working. To solve this problem, you need to go to the Network and Sharing Center, select Manage wireless networks.

Right-click on the network that you cannot connect to and select Properties. In the Security tab, click on the section Extra options. Check the box next to Enable compatibility mode for this network federal standard information processing (FIPS). This update should help resolve the connectivity issue.

Quite often, when you connect to the Internet, you can see the message "unidentified network without access to the Internet."

Obviously, it indicates that connecting to the worldwide network on this moment impossible.

Moreover, such a message can be seen both when connected directly, via cable, and when connected via wifi. Its appearance does not depend on whether a laptop or a full-fledged PC is used.

Moreover, it can also occur when connected via a phone or tablet. Therefore, it would be useful to understand why such an error occurs and what can be done about it.

We will divide the whole set of tips into two categories - when the system writes such a message when connected directly and when connected via wifi.

Solution. When connected directly

In this case, the error will look like this.

In general, if you are using a direct connection, then the most common cause of such a problem is a problem on the provider's side.

Checking this is very simple - if you did not change any settings, and some time ago everything worked fine, then this is the reason.

You can also check this by connecting the cable to another device or through a router - if the problem persists, this is not the reason.

But if this is still the case, there is only one way to solve it, and it consists in calling your provider and calling a specialist at home.

Invalid IPv4 settings

Another very common cause of this issue on Windows systems is IPv4 protocol settings failure. To fix this issue, you need to do the following:

• Go to "Network and Sharing Center". This is done very simply - you need to right-click on the network connection icon in the quick launch panel. Then select the desired item.
  It all looks as shown in the picture.

• Select the item "Change adapter settings" on the left side of the window that opens.

• Right-click on your connection and select "Properties".

Note: It is quite possible that in your case the network will be called differently. It is necessary to look at how it is called even when trying to connect, that is, in the window shown in the figure. The same connection must be selected in the menu shown in the figure.

• The window shown in Figure A opens. There you need to select the “Internet Protocol version 4 (TCP / IPv4)” item (it is highlighted in red) and click the “Properties” button (highlighted in green). This will open a window like the one shown in Figure B.
  You need to make sure that the checkboxes for automatic data acquisition (they are highlighted in yellow frames) are ticked. In most cases this should be the case. But at this stage, it would be useful to take your contract with the provider in hand.
  It is possible that the provider requires that there be some special data there. In this case, you must check the boxes highlighted in blue and enter the data from the contract in the fields with the same color. After all the manipulations, click the "OK" button.

If nothing connects now, you can try restarting your computer. Does not help? Go ahead!

Problems with TCP/IP

Also, the cause of the above error may be failures in the settings of the TCP / IP protocol.

Most effective method to exclude this option is to simply reset all these settings.

This is done as follows:

• Run command prompt as administrator. This is easiest to do with the following sequence of actions:
• Open the Start menu (highlighted in red in the figure);
• Click "All Programs", we find the "Standard" folder there (shown with an orange frame);
• On the item "Command line" (highlighted in green) click with the right mouse button;
• Select "Run as administrator" (highlighted in blue).

• We write the following there: "netsh int ip reset resetlog.txt" as shown in the figure. Press Enter and restart the computer.

Clue: the above inscription can be copied directly from here using the keyboard shortcutCTRL+C, and in the command line you need to right-click on an empty space and click "Paste".

If this method fails for some reason, you can download a special utility to reset TCP / IP settings at support.microsoft.com/kb/299357 .

After downloading it, you just need to run it, the program will do everything itself.

Problems with DHCP

To test this option, run command line in the manner described above and write "ipconfig" there.

If it says “169.254.[any number].[any number]” next to the inscription “Main Gateway” (it is underlined in the figure), most likely the problem is in DHCP.

To fix this problem, do the following:

• We go to the device manager. To do this, in the "Start" menu, launch the "Control Panel" (shown in blue in the figure). After that, in the search bar (highlighted in red), we write "Device Manager".
  We launch the one next to which it says “Device Driver Update” (highlighted in green).

• In the manager we find the item “Network adapters” (it is underlined in the figure), on our own (there may be additional ones - virtual, but virtual ones usually say “Virtual”) right-click and select the item “Properties” (highlighted in red).
  In the menu that opens, go to the "Advanced" tab, find the item "Network address" in the list and in the "Value" field (highlighted in blue) we write any 16-bit number for 12 characters. You can write as shown in the picture. Click "OK".

• We open the command line in the manner described above and write “ipconfig / release” there, press Enter, then “ipconfig / renew” and again Enter.

• We restart the computer.

If all this does not help, there is only one thing left - to call the operator and ask for help.

Important: For all the methods described above, the interface was usedWindows7, in other versions of the operating system, the appearance of the windows may be slightly different, but the essence remains the same.

Today for many is already urgent need. Modern hardware and operating systems are becoming more and more intelligent, and the user is less likely to have to do anything to configure. However, occasionally such a need arises. Today we will tell you how to solve the problem if the computer reports that you are connected to a network without access to the Internet, and next to the connection icon you see a yellow triangle with an exclamation point.

Microsoft operating systems, starting with Windows 7, constantly monitor network connections, and as soon as the global network is unavailable, they immediately report it. There are many reasons why a computer may not be connected to the Internet. These may be problems with the provider, incorrect configuration of the equipment by the user, or failures in the operation of network protocols. Today, the new IPv6 protocol is becoming more widespread, but its percentage is still quite small, especially in home networks, so the focus will be on old version- IPv4.

Connecting through a router network cable without internet access

Provider problems

Yesterday everything worked, and today this warning appeared. If this happened to you for no apparent reason, then in most cases the problem is with the provider. Therefore, before doing anything yourself, call technical support. Most often, data transmission lines are damaged, some engineering works or you just forgot to top up your account on time.

Perhaps you will hear in response that everything is working well for the provider, then you need to check your network and, if necessary, configure it. The support service will certainly offer the services of its own master, but, firstly, its services are not free, and secondly, while the master gets to you, you can manage to solve the problem yourself.

Physical connection problem

It is not so rare that the cause is a partially broken network cable or a loose connection in the connector. And if you have pets or children, then the likelihood of this development increases. Even Wi-Fi users should not forget that a cable is also stretched to the wireless router. Check the integrity of all wiring - if there are any strong kinks anywhere, if all the plugs are firmly inserted into the sockets and if they are inserted where they really need to be. Provided that the problem is not found here, we proceed to the next step.

Connection via local network Windows 7 without internet access

It happens that the installed router hangs corny. In this case, it helps. To do this, just turn off the power to it and reconnect it after a few seconds. It does not hurt to restart the computer at the same time. If it happens that these router freezes occur with annoying regularity, consider buying a new device. It is also necessary to try to connect the Internet cable directly to the PC or laptop. If there is no result, first we will deal with the computer.

Checking computer settings

It is possible that the problem arose “out of the blue”, then there should not be any questions with the settings on the computer, much more often the problem occurs during the initial configuration or making any changes to an already working network. First of all, you need to check the correctness of the IP address of the computer, for which press Win + R on the keyboard at the same time. The Run window will open. In its line, enter ncpa.cpl and click OK. The network connections window will appear. It may happen that there are several of them, but the necessary one will not be crossed out with a red cross and its name is similar to “Local Area Connection” or “Wireless Connection” (in the case of using Wi-Fi). Right-click on the desired connection and go to properties, where the list will contain lines with IPv4 and IPv6 entries. Check the box next to IPv6, and double-click on IPv4. Check the boxes for automatically getting settings and save the changes. If access to the Internet does not appear, go ahead.

Setting up a LAN connection in Windows 7

Finding out the address of the router

Perhaps, nothing had to be done in the previous window, the settings for obtaining IPv4 and IPv6 protocol addresses are automatic and everything was initially as it should be. Then you only need to configure the router, for which you need to know its address. Right click on the connection again and select "Status" and then click "Details". There will be several lines in the window that appears, we are interested in "IPv4 Address". If you see an entry like 192.168.x.x, remember or write down what is indicated opposite "IPv4 DHCP server" - this will be its address. It may be that the computer is not able to receive the settings automatically, then the entry will look like 169.254.x.x. You can find out the IP of the router from the documentation for it, or it is indicated on the device case, and most often it is 192.168.0.1 or 192.168.1.1. Open your browser and enter the set IP in the address bar, and if it is correct, you will be prompted to enter login and password.

"Internet Protocol Version 4 (TCP/IPv4)" Properties

Setting up an internal network on the router

After entering the correct credentials, you will be taken to the router control panel, and further actions depend on the device model and its firmware. You need to find a DHCP server management that is responsible for automatically obtaining IP addresses and other parameters necessary for the network to function properly for devices. Look for blocks whose names say DHCP settings, DHCP server, or the like. The block will contain a radio button with values ​​Enable or Disable. Most often, these settings are located in the LAN (Network) section. Enable the DHCP server, save changes and reboot the router. After this, the computer will be connected to the Internet.

Check your ISP connection settings

Do not jump to conclusions if the previous steps did not help set up a connection. Since the network is still not working properly, we check the connection with the provider, for which go to the appropriate section in the router control panel. Almost all manufacturers call these options WAN or Internet. There are quite a few options in this section. Which are intended for you, you can find out from the contract or in the technical support of your service provider.

Reinstalling network card drivers and checking firewall

It makes sense to do this when you are sure that all the previous settings are correct, the connection with the provider is established, but the network cannot be configured normally. The best option would be to download the most recent driver from the manufacturer's website, for which it looks like you have to go to a friend or neighbor. In the absence of such an opportunity, the driver that is attached to installation disk. Be sure to restart your computer after reinstallation. It should also be noted here driver failures that occur due to installed software that changes the operation of network protocols on a computer. The most common representatives are antiviruses and firewalls. Make sure that such programs are not installed, and if they are, then disable or remove them during the check, as they may block the connection.

Replacing the MAC address of a network card

Problems with MAC addresses sometimes arise in cases where the network is very large, but it is still worth excluding it. On your computer, go to Device Manager by pressing the Win+R keys, typing devmgmt.msc and clicking OK. The device manager will start, where you need to find the "Network adapters" section, expand it and select the network card with which the PC is connected. After double-clicking on it, in a new window, on the Advanced tab, select the Network address option and enter any twelve digits in the empty field on the right. After that, we reboot and look at the result.

Clear DNS cache and reset TCP/IP settings

The following steps will reset all network settings for IPv6 and v4, so you must follow them. If you are ready for this, and you have information about all the settings (written somewhere, for example), find the command line in the Start menu and run it with administrator rights. Enter the following commands in the window that appears, confirming the entry by pressing Enter. After working out each command, restart the computer and check the result.

1. ipconfig /flushdns
2. netsh winsock reset
3. netsh int ip reset c:\resetlog.txt - this command will completely reset all connections and they will have to be configured again!

Flushing the DNS Cache Using the Command Line

You have a direct connection to an ISP

The option when your computer is connected directly to the provider, bypassing the router, is now becoming less common, as the number of network devices is growing steadily. But what if you have just such a connection? Eliminate possible problems with the drivers as described above, and check that the connection settings are correct. Regarding settings, the best option will contact technical support, since there are a lot of variations.

Nothing helped at all.

Maybe you are lucky and your ISP provides access using the new IPv6 protocol, the configuration of which requires some knowledge of the subtleties. It should be noted that the expansion of the use of IPv6 is inevitable, since the address space of the previous version of the protocol, IPv4, has come to an end, and the global network is growing every day. Since the efforts were spent, and your network did not work, then there is only one advice - call the wizard. It is quite possible that the problem that has arisen is non-standard or the replacement / repair of equipment is required to solve it.

There is Internet access, but the error remains

Such a situation may well be. The reasons may be different - most often when connecting through a proxy server. However, there is only one solution. Press Win+R, type gpedit.msc - this will take you to the local group policy editor. In the menu on the left, go through the items: Policy " Local Computer» - Computer Configuration - Administrative Templates - System - Web Communication Management - Web Communication Settings. Now, on the right side of the window, find and enable "Disable active probing for network connection status indicator". In Windows 10, this setting is called "Turn off active network connection health checks." Take into account the fact that now even if there is really no connection, the message will not appear.

Conclusion

This article collects the most common problems associated with the "Network without Internet access" error and suggests ways to solve it. We hope that the material was interesting for you and helped you to overcome the difficulties that have arisen on your own.

The Internet is an integral part of our life. The lack of a network is a serious problem for the user. There is not always time to call the provider, but, fortunately, you can troubleshoot yourself. Below you will read about common causes of Internet problems and how to fix them.

Possible reasons for the lack of Internet on Windows 7

There are several reasons for not having internet. Some of them relate to computer drivers and its equipment, others affect system errors and the lack of correct network settings.

The most common reasons for the lack of Internet:

• mechanical damage to the cable or ports;
• lack of a network card or its drivers;
• incorrect connection settings on the computer or router;
• presence of virus software.

The Internet may also be unavailable due to a debt on a personal account or due to an accident on the line. Before you try to troubleshoot, check if they are caused by these factors.

How to check network status

Among the problems with the Internet, one can single out those that occur most often and periodically occur for most users. Resolving them is very easy. The first thing to do is check the status of the network.

You can do this in two ways:

In both cases, under the icon of your network, its status will be described.

Unidentified network without internet access

If the computer "sees" the network and connects to it, but does not get access to the Internet, the network status will be called: "Unidentified network. No internet access." What to do in this case?

Rebooting the router

If you have a router installed, the first thing to do is to reboot it. He may simply not have time to update the data, and because of this, access to the network will be lost. Reboot is performed in the following order:

1. First, the router is disconnected from the network. It is important to unplug the cord from the outlet, and not to reboot using the button on the equipment - you need to stop the flow of electricity for a while.
2. Then, for 10-15 seconds, the router must be left turned off.
3. After that, the router is connected back to the network and wait until the indicators on it light up.

After the indication on the router has appeared, you can check whether access to the Internet has appeared. Usually, after a reboot, the Internet appears within 7–10 seconds.

Checking network settings

Network settings are data that allow a computer to connect to a network distributed by an ISP. These settings are issued by the company that provides access to the Internet (usually they are specified in the contract for the provision of services). Sometimes the settings on the computer get lost, and because of this, the device cannot connect to the Internet.

In order to check the network settings, you need to open the "Protocol Properties". You can do it like this:

1. Go to the "Control Panel" through the "Start" menu.
   "Control Panel" is located in the right menu "Start"
2. Select "Network and Internet".
   In order to find the desired section, you should select the "Category" view option in the upper right corner of the screen
3. Open the "Network and Sharing Center" section.
   In the "Network Control Center" you can check the connection status, create a new network, carry out almost any action with your Internet connection
4. On the left, find the "Change adapter settings" section.
   Locate the "Change adapter settings" section
5. In the list of networks, select the one you need, right-click on it and find the "Properties" item. Only an administrator can open Properties.
   The desired network will be called "Local Area Connection" or "Ethernet"
6. In the list, find the item "Internet Protocol version 4", select it with a single click of the left mouse button. After that, the "Properties" button under the list is activated, you need to click on it.
   An item is selected by a single left-click of the mouse. You do not need to uncheck the box next to the item

When the window is open, you still need to understand what settings should be entered. There are three options:

We will understand what IPoE and PPPoE protocols are, but we will not go into terminology. It is enough to understand what protocol is used on your communication line. To do this, just look at the network settings issued by the provider (specified in the contract).

Settings can be as follows:

• password and login are used on the PPPoE protocol,
• IP address, subnet mask, gateway and DNS are used on IPoE.

If PPPoE is used and you are connected directly, that is, you do not use a router, after checking the settings through the protocol properties, you need to recreate the network.

1. Return to "Network and Sharing Center".
   Thus, only PPPoE connection is configured. For settings wired connection IPoE uses protocol properties
2. Open the "Create and configure a new connection" item.
   Switching between items is done with a single click of the left mouse button.
3. Select "Create and configure a new network" and click "Next".
   The selected item will be highlighted with a bright blue background.
4. Click on the "High Speed" option.
   Waiting to search for available connections can take several minutes
5. If an error occurs, select "Create connection anyway".
   This error appears quite often, but the connection can still be created
6. Next, you will need to enter the network settings, as well as the network name - this is the name of the connection. You can use the name of the provider company or something else.
   The connection name is its name, and the username and password are the network settings. It's worth noting that the password has nothing to do with the Wi-Fi key.

After that, the network will be reconfigured, and you will need to check the availability of network access.

Video: Checking network settings on a computer

Reset TCP/IP settings

Sometimes internal system errors can be the cause of problems. TCP/IP is a set of network protocols responsible for data transfer. You can reset it like this:

Checking Drivers

The reason for the lack of access may be outdated drivers (usually this problem is associated with a recent update of the operating system). Let's check their status.

In addition, by right-clicking on the name of the driver, you can select "Uninstall", and then restart the computer. Then, when you turn on the system, it will automatically install the missing driver.

If there is an exclamation mark next to the driver icon, you will need to completely reinstall the drivers and check the performance of the network card installed in the computer.

The default gateway is not available

Network Diagnostics will help you identify the following problem. Right-click on your connection icon, select Troubleshoot.

If you receive a Gateway Unreachable message after system diagnostics, the following steps may help.

Prohibit turning off the AC adapter to save power

Sometimes the system disables the network adapter - the device that allows you to connect to the internet - to save power. Try to disable this option.

1. Find "Device Manager" through the search bar in the "Start" menu.
   Opening the "Device Manager" through the search is not the only way, but the most convenient
2. Expand the "Network adapters" tab, select the one you need, right-click on it.
   In the context menu, click on "Properties"
3. Select "Properties" and open the "Power Management" tab.
   Changing these settings will also help solve the problem of disconnecting the Internet after the computer goes to sleep
4. Uncheck the box next to "Allow the computer to turn off this device to save power" and save the data.
   After changing the settings, do not forget to save them by clicking on the "OK" button.

Update or reinstall drivers

Also, through the "Device Manager" you can update the drivers: expand the "Network Adapters" tab, right-click on network driver and select "Update" or "Remove", then restart your computer.

If the action does not help, you can download the drivers from the websites of their manufacturers and install them yourself. Manufacturers usually offer to download drivers in the ".exe" file format, so for installation you only need to run the downloaded file and accept the agreement.

Video: how to reinstall drivers yourself

Error 651 occurs when connecting to the Internet through a router

This error occurs when trying to connect via PPPoE. Rarely, but it happens that users create a new high-speed connection while the provider uses the IPoE protocol. Therefore, first of all, make sure that you are using the PPPoE protocol.

After that, you will need to re-create the connection. The process is described in detail in the "Checking network settings" section (all you need to do is create a new connection through the "Network Control Center"). If that doesn't help, read on.

Disable antivirus

Sometimes antivirus programs block access to the Internet. Often the solution to the problem can be disabling the antivirus. Right-click on its icon in the Control Panel and select Disable. Sometimes antiviruses block access to the network even in a "sleep" state, so you can try not only to disable, but also completely remove this software. If this action helped, report the situation to technical support antivirus software.

Problems on the router

The cause of the problems can be several problems associated with the router:

• incorrectly connected cable;
• incorrectly entered settings.

First try doing the following:

1. Disconnect the router from the network.
2. Without connecting the router, unplug the network cable from it and plug it back into the WAN / INTERNET port, making sure that the plastic clip on the plug clicks when connected.
3. If the cable goes from the router to the computer, disconnect it from the LAN connector on the router itself and from the network card connector on the computer, and then plug it back in.
4. Connect the router to the network.

If access does not appear, check the network settings entered on the router. In order to access the router, you will need to enter "192.168.1.1" or "192.168.0.1" in any browser (in the address bar). Sometimes the address at which you can log into the router is different, so if you cannot log in through the specified addresses, check the data in the instructions.

Internet files not downloading

It may also happen that Internet access is active, but files are not downloaded. This problem is usually associated not with the Internet itself, but with a computer, software.

What you can try to do:

• try to download a file from another source - you may not be able to download something simply because the resource does not support downloading;
• try downloading through other browsers;
• check your computer for malware using any official antivirus.

Internet media not working

It happens that the Internet works, but video or audio materials are not played. What to do in this case? First, check if the files downloaded to the computer can be played. Perhaps the cause of the problem lies directly in the sound settings of the computer. If files are played from a computer, but not from the Internet, read on.

The first thing to do is to understand why this problem occurs. It may be a browser error, the absence of plugins. To get your computer up and running, do the following:

PPPoE Diagnostics

Additionally, in order to find out the causes of errors when using PPPoE, you can use the "Troubleshooting Center". Then the system will independently check for errors and offer possible solutions.

PPPoE (Point-to-Point Protocol over Ethernet) is a communication protocol over an Ethernet network that works on a point-to-point basis and gives the user a number of options: encryption, authentication and data compression. It is necessary for the user authorization system, which makes it easier to track the time of provision and payment of network services.

Right-click on the network connection icon and click the Troubleshoot button. After that, an analysis will be made, Windows will try to cope with the difficulties on its own, after which it will prompt you to perform several actions.

Error 619

Restart your computer and disable all security systems: antiviruses and Windows Firewall. The latter is disabled in the following way:

Error 633

There is only one solution:

1. Restart your computer.
2. Try to connect to the internet again.
3. Create a new connection.

Error 638

The main causes of occurrence:

• damage to the network cable;
• malfunction of drivers or network card;
• incorrect connection settings;
• malfunctions on network equipment (router);
• the presence of viruses on the computer.

First of all, do two things: check the integrity of the cable and the presence of an indication on the router. Never neglect these steps in case of problems with the Internet, so as not to waste time trying to solve the problem caused by mechanical damage.

It is clear that if the cable is damaged, you need to call the provider. But if there is no indication on the router (which indicates that the device is de-energized), you should try to reconnect the router to another outlet before replacing it.

After checking the functionality of the router and the integrity of the cable, check the computer for viruses with any antivirus program.

If the above does not help, re-create the network connection - check the correctness of the entered settings both on the router through its settings, and on the computer itself through the protocol properties. Both actions are described in detail in the previous paragraphs of the article.

Error 691

The only reason for the occurrence of error 691 is the incorrectly entered password and login (network settings). Therefore, the first thing you need to do is re-create the connection. The process has already been described earlier - you need to go to the "Network Control Center", select "Create a new connection" and then enter the correct network settings. After that, restart your computer and check your internet connection.

If the action does not help, report the problem to the provider. Perhaps there was an accident on the line, which caused the error.

Error 720

The easiest way to solve this problem is to reinstall the operating system. To do this, just download from the site windows file operating system to a disk (or purchase a disk from a store) and run on your computer.

You can also try updating the TCP/IP protocol. The action is described above, but you can perform a deeper operation by completely reinstalling the stack. Reinstalling the stack on your own is dangerous - you will have to work with system files, and their damage will affect the operation of the computer. Therefore, just try to update the stack, and if the action does not help, contact the provider or a professional wizard for help.

Video: PPPoE Connection Errors and Troubleshooting

Network cable not connected

If, when checking the connection status, a message appears that the network cable is not connected, the first thing to do is really check that it is connected correctly and that there is no damage. If possible, try using a different network cable.

Make sure the cable is connected correctly. On the router, the network cable must be connected to the WAN or INTERNET port, and the cable leading from the router to the computer must be connected to the LAN connector. There is usually only one port on a computer, so it will be difficult to make a mistake.

Next, check the status of the router (if any). Its indicators should light up as usual. If there is no indication, reconnect the router to another outlet, try resetting the settings on the router (using the "Reset" or "Reset" button) and re-entering them. You should reset the settings only if you are sure that you can configure the router yourself.

Also check the status of your network adapter drivers and try updating them.

Video: checking the port on the network card and the WAN port on the router

Additional check of security settings

Security settings can also be blamed for many of these problems. This applies to the case when the PPPoE protocol is used. Therefore, if the proposed operations do not help to solve your case, try checking the connection security settings.

1. Open the "Network Connections" section.
2. Right click on your connection.
3. Open the "Security" section and set the use of "Insecure password" in the list that opens.

These are the main ways to diagnose connectivity on Windows 7 and troubleshoot. Do not forget that the reason for the absence of the Internet can be a banal debt or an accident on the line. If the methods described above did not help you, contact the provider so that the technical staff can diagnose and solve the problem on their part.