Error 651 but the Internet works in Windows 7. How to solve this problem

When a computer or laptop writes at the most crucial moment that “the modem or other communication device reported an error,” most users are lost: they start calling the provider or installing a spare mobile Wi-Fi on the computer.

However, this connection failure is not a serious problem, and in most cases you can fix the problem yourself. We will talk about what connection failure with error 651 means and how to fix a high-speed connection via wan miniport on Windows 7 in this article.

It should be noted that error 651 does not depend in any way on the Internet provider, and subscribers of byfly, Rostelecom, Ufanet and other well-known providers equally often encounter this problem.

Why does Windows display error 651 when connecting to the Internet?

This error number indicates that for some reason the connection of the modem (or other communication device) to the Windows OS of this computer is not carried out correctly.

Typically, network error 651 occurs when:

- there is no physical connection through the wan miniport (the network cable is damaged, the connector is broken, the PC’s network card, modem or switch is “burnt” due to voltage surges);
- incorrect network connection settings are installed on Windows (due to user inattention or as a result of a system failure);
- technical work is underway on the provider’s side.

But in most cases, this Internet error occurs due to incompetent user intervention in the operation of the system; accordingly, he can establish an Internet connection on his own.

How to fix connection error 651?

Having figured out what this error number means, first of all, carry out standard diagnostics that solve most computer problems:

- Restart your computer/laptop;
- Turn off the power to the router or modem for 10 minutes, then carefully plug the communication device into the mains and wait until it is fully loaded;
- Check the integrity of the network cable and whether it is correctly connected to the network card connector of your PC;
- If your computer/laptop is equipped with several network cards (Ethernet connectors), try connecting through each of them one by one;
- If in addition to this PC you have another communication device (laptop, smartphone, etc.), or have several versions of Windows installed on your computer, check your Internet connection with a different OS;
- In the Windows Control Panel, uninstall the drivers for your network card and install the latest version - from the disk, or by downloading it to the software on the manufacturer’s official website.

The network cable is working, but the modem reported error 651 - what should I do?

If there are no connection failures on other devices, then you can safely celebrate your first victory - the modem is working and your provider is faithfully supplying you with paid Internet.

- When connected via ADSL

If the DSL link lights up stably (accordingly, the modem connection via the network cable is working properly), then should check:

VPI/VCI parameters (which you can find out from your provider’s technical support)

Bridge connection type

If the connection failure with error 651 occurred after you ran a cable from the modem to the router and created a home wifi network, the existing high-speed connection must be deleted. The reason is that the router and modem transmit information using different protocols and often “conflict” with each other.

-When connecting via pppoe via a router

To fix connection failure on Windows 7:

To do this, go to “Control Panel > Network and Internet > Network Connections”, select the section “Create a new connection or network > Internet Connection > PPPoE” and in the open window enter your credentials from the agreement with the provider. Make sure you enter the parameters correctly, as connection failures often occur due to typos in the login/password field.

Try updating raspppoe.sys, a Windows 7 system file that manages PPPoE connections. You can copy the file from a nearby computer (if it does not experience communication error 651) or download it from here - “http://goo.gl/oQytf2”. The raspppoe.sys file is located in the “C:\Windows\System32\Drivers” folder - find it, rename it (but do not delete it - in case you have to put it back) and copy the downloaded file to the directory. Restart your computer and try connecting again.

If none of the methods helped you, leave a request indicating the error number at your provider's technical support service.

Reading time: 6 minutes. Views 68 Published 12/17/2016

Many users very often encounter the problem of lack of Internet connection. In many cases, the provider is to blame for the lack of Internet access to a computer, but user errors when working with a computer cannot be ruled out. In my practice, very often I encountered situations: a user complains that the Internet suddenly disappeared. After identifying the cause, it turned out that someone had pulled out the network cable from the computer. Therefore, many people do not even think about checking such banal things. In today's article, we will talk about the error connection failure with error 651. If you encounter this problem, then we will try to solve the problem ourselves.

What causes connection failure with error 651?

Users are faced with the problem of connection failure with error 651. The problem often arises with the Rostelecom provider or others who use the connection of subscribers to the Internet via the PPPoE protocol. Users, not knowing how to deal with the problem, begin to reinstall the Windows operating system. But after reinstalling the error appears again. Because the solution to the problem was chosen incorrectly.

Let's look at a specific example:

If you are experiencing connection error 651 on a computer running Windows 7, 8, 10, it means that the network cable is not connected. Check the connection between the network cable and the network card is secure. Unplug the network cable from the network card port and insert it again, perhaps the contact has simply disappeared. If this does not help, then at least visually check the integrity of the cable.
Check whether the network card is enabled in the system settings. To do this, go to “Start” - “Control Panel” - “Network and Sharing Center” - “Change adapter settings”. We find the network connection we need, right-click and select “Enable”.

These are two basic rules that need to be followed immediately as soon as the Internet is lost.

The most common reasons for lack of Internet connection.

Let's look at the most common reasons for lack of Internet:

Blocking the connection by installed antivirus software. Quite often, the Internet connection disappears after installing or updating antivirus programs. Since the goal of antiviruses is to protect your computer from various types of threats, sometimes they do this not entirely correctly, as a result of which they create certain problems for users. Therefore, to exclude this fact, you need to stop it for a while or completely.
The network connection is not enabled correctly. Quite often, there are cases when more than one network connection is installed on a computer. In most cases, additional virtual connections are created after installing various programs: VPN clients, virtual machines, and so on. The user, unknowingly, can enable the wrong network connection, but the necessary one will be disabled. Therefore, check this item. I wrote how to enter the network adapter settings in the previous paragraph;
PPPoE client software failure. It often happens that a connection failure with error 651 appears after the Windows PPPoE client does not work correctly. In order to fix this problem, you need to delete the existing connection and create it again;
Connecting the cable to another network card. This is also a fairly common case. If you have 2 network cards installed in your computer, then you may have inserted the LAN cable into the wrong network card for which the connection was configured. To solve the problem, it will be enough to connect the cable to the correct network adapter;
The problem is with the drivers. It is possible that the network card driver is to blame for the problems of lack of Internet. In order to check if there are problems with the drivers, go to “Start”, right-click on “My Computer”, and select “Manage”. The “Computer Management” window will open. You need to find the “Device Manager” item, there we look for the line “Network adapters” and expand the drop-down menu. A list of network adapters will open. If you see that a driver is not installed on some adapter, you need to install it. How to install a driver via Driver Pack, ;
The network cable is damaged. Often, the provider's cable is laid in the entrance or on the street, so if everything is in order at home, then check the condition of the cable outside your home. Also check if the connector or port on the computer or switch is damaged;
Problems on the provider's side. Often, Internet failures occur on the provider’s equipment. Therefore, if the tips described above did not help resolve the connection problem, then call the provider’s technical support.

Error 651 occurs in different versions of Windows.

Different versions of operating systems, although similar in interface to each other, have their own characteristics. Therefore, a failure with connection error 651 can be resolved in different ways.

In Windows 10, connection failure with error 651 may occur to you after installing or updating drivers for a Wi-Fi adapter; problems sometimes occur in earlier versions. In order to solve this problem, go to “Local Area Connection Properties” and uncheck all the boxes except “Internet Protocol version 4 (TCP/IPv4)” in the “The selected components are used by this connection” item. Then restart your computer and modem.

In this version of the operating system, our error often occurs after installing the 64-bit version of Windows. As a rule, users did not encounter this error in the 32-bit version of Windows 8. Also, in order not to immediately blame the bitness of the operating system, check all the points described above.

In the seven, there were often cases when strange devices appeared in the device manager, in the network adapter settings, which users did not install themselves. They appeared due to the work of viruses. Therefore, we remove all suspicious devices and restart the computer.

Eliminating the causes of error 651.

We check the serviceability of the network card. The network card may be damaged after a thunderstorm or due to problems with the computer. In order to eliminate the problem in the performance of the network card, you can install another network card in the PCI slot and configure the Internet connection. If the problem is resolved, then the built-in network adapter is probably not working.
Check the integrity of the network cable. As mentioned above. It is necessary to check the integrity of the network cable both in the house and in the entrance or on the street. Sometimes unscrupulous provider employees use a cable intended for indoor use outdoors, resulting in its damage.
Check if the drivers are installed correctly. If there are suspicious and unknown devices in the list of network adapters, then remove them.

Conclusion.

As you can see, there are quite a few reasons why the connection fails with error 651, but you can find a solution to the lack of Internet connection yourself. As a rule, it is enough to follow all the recommendations that I outlined in this article and the Internet should appear on your computer again. Also, if you can’t solve the connection problem at all, then first of all call the provider’s technical support, and only then contact PC repair service centers. This way you can avoid spending extra money on computer maintenance.

In this article, I would like to clarify one incomprehensible situation, which is associated with the appearance of error 651 when starting a high-speed connection through a router. I will explain why this error occurs and what needs to be done to get rid of it.

Honestly, if you understand how a router works, you are unlikely to encounter this error. But, as it turns out, such a problem arises. So, recently in the comments they asked me for help. The problem was that the person installed and sort of configured the router, but after that, when he tried to start a connection on the computer, he got error 651. And that’s it, he couldn’t connect to the Internet.

I tried to explain as simply as possible why this was happening, but they didn’t understand me, or didn’t want to understand. In the end it turned out that I don’t know anything and am just being smart :). It was a funny correspondence. If you are interested, you can see the first comment at this link. Commentary from the author Roman (read our correspondence).

After such an incident, I decided to write this article, and also tell you why error 651 appears after installing the router.

In this article, we will look at the case when “Error 651” appears only when connecting to the Internet through a router.

Simply, this error can also occur when the cable is connected directly to the computer. Then, the problem is most often in the operating system (I advise you to delete and re-create a high-speed connection), or on the provider’s side.

Everything is much simpler than it seems. The main thing here is to understand how the router works. I will now write approximate actions that result in the error we are talking about today.

Look here. We have a provider that provides Internet using PPPoE technology. This means that you have created and configured a high-speed connection on your computer, which you launch to connect to the Internet.

We installed the router, perhaps even configured it. We connect to the Internet on the computer and see:

Error 651: The modem or other communication device reported an error.

It looks like this:

Devices will connect via Wi-Fi, but most likely there will be no Internet access.

That's actually the whole problem.

How to solve this problem?

After installing and configuring the router, the high-speed connection on your computer can be removed, we don't need it! This is the main thing to understand in solving this problem.

By default, the router operates in mode Router(logical :)), which means that he will call the provider and establish a connection to the Internet. And simply distribute the Internet to your computers, laptops, phones, etc. But you no longer need to create and launch a connection on your computer. You just need to connect your computer via a network cable or Wi-Fi and everything will work. Without any connections there. The router will establish the connection.

You can, of course, use the mode Bridge. In which you connect the Internet to the router, and the computer to the router. In this case, the PPPoE connection must be configured and launched on the computer. But this makes no sense, the Internet will simply pass through the router and nothing more. It’s better to just connect the cable directly to the computer.

It is also important to configure the router correctly so that it can establish a connection with the provider. For example, you can see the instructions for setting up the TP-Link TL-WR841N.

On the tab WAN by selecting the connection type PPPoE you must set all the necessary parameters. You can find them out from your provider, or look at the contract that you were given when connecting to the Internet.

Also one nuance, do not forget to check the box next to “Connect Automatically”(connect automatically).

After configuration, the router will connect to the Internet and distribute it to all devices. No additional connections, etc.

I hope I was able to clarify this issue.

Leave your questions in the comments. Best wishes!

Error 651 may occur due to technical problems on the part of the provider or your network equipment. This all involves a computer's network card, router or modem. If Windows 7 is installed on your computer, there may be even more sources of problems. After reading this article, you will be able to achieve the desired result, that is, connect the Internet to your computer quickly and independently.

What it is

Many people wonder what error 651 means when connecting to the Internet. This means that the system has a failure of some piece of equipment that is responsible for the network connection, that is, it is the connecting part between the network and the computer. You can be 100% sure that you did everything correctly, but still the signal cannot reach your PC or laptop. So how to fix this problem?

The first thing to do is call your provider and ask what's wrong. If he says that everything is fine on the line, then the problem will need to be solved at home or, as a last resort, invited to a specialist who understands such situations. This article will describe everything in detail, so first you need to try to cope with this task yourself.

Video: Error 651 in Windows 8, how to fix it

Causes and solutions to this problem

There are two types of network equipment that connects the signal from the provider to your computer. From this you can also find out what error 651 means when connecting to the Internet.

So, there are 2 types of connecting network equipment:

You are only responsible for equipment that is your private property. Correcting the error yourself can happen if a failure occurs on your equipment (this happens in 85% of cases).

If you turned to the Internet for help, then you are wondering what error 651 means when connecting to the Internet and how to deal with it. Let's start with the network card.

LAN card

How to fix an error if it occurred through a network card? Let's figure it out.

Situations due to which a failure may occur:

Do you need to install Ubuntu from a USB flash drive? How to install .

Error 651 when connecting to the Internet via a router

What does error 651 mean when connecting to the Internet through a router? This means that this equipment has failed. The first thing to do is reboot the router. Most likely, the problem is its freezing. This can happen quite often, especially if the equipment is running without being turned off. The router breaks down very rarely, so the reason for the long absence of Internet is most likely something else.

Network cable

Through a cable, the connection to the Internet may also be lost. What are the reasons for this:

Changing the registry

You can also solve the problem by changing the registry. This is a rather complicated procedure, but if you are not a simple PC user, you can try it.

A similar network connection error numbered 651 for frequently installed versions of Windows 7, 8 and 10, the system describes it as a network connection error to the high-speed connection type Miniport WAN PPPoE, the text of the message displayed looks like this: “The modem or other communication device reported an error "
This article covers in detail ways to fix network errors 651 for all kinds of versions of Windows, and what type of provider you have does not play a significant role in this situation. This information is aimed at solving the problem without having to reinstall Windows again.

If during the next connection to the Internet error 651 appears on the screen, then you should try the following simple steps, after each of these steps you must try to connect to the Internet again:

All these rather simple steps that are accessible to all beginners will help you eliminate such an error, and the connection will be restored again. This is what error 651 looks like in Windows 8.

Resetting TCP/IP network protocol settings

There are several ways to reset the TCP/IP protocol settings for the popular versions of Windows 7 and 8. The easiest way in this case would be to use this special utility called Microsoft Fix It, which can be downloaded on this official portal
Upon completion of launching this utility, the program will spontaneously perform the necessary reset of the Internet protocol, after which you just need to restart the computer and try to connect to the Internet again.
In some situations, manually unchecking the TCP/IPv6 network protocol, which is located in the PPPoE properties, quickly helps to remove error 651. To carry out this action, you need to go to the list of required connections and open the available properties of a high-speed connection (The algorithm of sequential actions is as follows: Network and Sharing Center - change adapter settings - right click on the connection - properties). Next, on the Network tab, you need to disable the checkbox from the Internet protocol of the required version 6.

Updating existing network card drivers

Updating the drivers on your computer's working network card can also be a way out of the current connection problem. You just need to download them from the official website of the motherboard manufacturers or from a laptop and follow the simple steps to install it.
If you have two working network cards, this can also cause error 651, then you should disable the one that is practically not used.

Changing TCP/IP protocol parameters in the network registry editor

This method is mainly convenient for use in server versions of Windows; I have not used it myself for user versions. It consists of changing some parameters in the registry editor, to launch which you need to use the following functional combination “Win + R” and enter regedit yourself. Next, you need to open the following section of the network registry (folders on the left) HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters When Using a single right-click on an empty area of the list of parameters, you need to select the desired item “ Create DWORD Value (32 bits)».

Set the name for the parameter as EnableRSS and set it to 0.
In the same way, create the required parameter DisableTaskOffload with the required value 1.
After which you need to restart the computer and try to connect again.

Checking technical hardware components

If none of the above fixes the problem, then you should move on to more radical methods of troubleshooting the problem in the form of reinstalling Windows.

First you need to disconnect your computer, router or modem.
Next, you should disconnect all the cables, and at the same time carefully check the integrity of the cable connections again.
Next, you should connect your computer and wait for it to fully boot. If there is a network router on the cable line, then you need to turn it on, but this should be done only after the computer boots.

Well, then it’s worth taking a closer look to see if error 651 occurs again.

Such an error can also be caused by the action of some unidentified malicious file on the computer, in which case it is necessary to check the health of your software using special means; for these technical purposes, in addition to , it is recommended to use the following high-quality programs Hitman Pro and the well-known Malwarebytes Antimalware. Perhaps, after eliminating the dangerous software, error 651 will no longer appear on your screen.