Despite the fact that Wi-Fi and other wireless technologies have already entered our lives quite tightly, many users receive Internet from their providers using a cable connection. Twisted pairs are also used to create local home or office networks. In this article, we will talk about a fairly common problem - the inability of the system to determine the network cable connected to the computer.
As with other attachments, cable connection problems can be divided into two groups. The first includes software failures, in particular, incorrectly working network device drivers. To the second - various damages and malfunctions of the cable and ports.
Before proceeding to troubleshooting, you can do the following:
In order to make sure that the cable itself is in good condition, it is first necessary to make a thorough inspection of it. You need to look for kinks and violations of insulation. Also try connecting with this cable another computer or laptop. Is the situation repeating itself? This means that you will have to purchase a new patch cord. However, if you have the appropriate skills and tools, you can only replace the connector and check the performance.
Another option for the development of events is a malfunction network port on a PC or router, or the entire network card. The recommendations here are simple:
The roots of this reason lie in the peculiarities of the "communication" of the operating system with the equipment. To determine which piece of hardware is connected to the PC, the OS can only use special program- drivers. If the latter does not work correctly or has been damaged, or an error occurred during its launch, then the corresponding device will not function normally. There are several ways to solve the problem with drivers.
The name of the method speaks for itself. We need to "force" the system to stop and restart the driver.
control.exe /name Microsoft.NetworkandSharingCenter
The system will display a warning window in which we click OK.
Method 2: Update or roll back the driver
The upgrade needs to be comprehensive. This means that updating only one network card driver may not resolve the issue. This is due to possible incompatibility software different parts of the computer. To carry out this procedure, it is recommended to use special software, for example, DriverPack Solution.
A rollback should be applied if a problem occurs after installing a new driver. The following steps will restore previous version BY.
As you can see, there are very few reasons for the lack of a network cable. The most unpleasant of them are physical hardware malfunctions - a router, adapter, port, or the patch cord itself. This results in wasted time and money. Everything is much simpler in cases with drivers, since installing or updating them usually does not cause difficulties even for inexperienced users.
A wired internet connection is preferred due to the higher data transfer speed and overall signal quality. However, the presence of a large number of physical components located in a rather large area creates the risk of damage to cable connections. In this regard, the USB modem seems to be a more reliable source, albeit a slower solution for providing home Internet.
So just yesterday you were enjoying the video high definition, and today the network card does not see the cable? Who is to blame and most importantly, what to do? Here is a list of possible reasons.
The weakest link is the cable itself and the connectors. Usually, part of the cable is inside the apartment, the rest is in the entrance, in the stairwell.
In recent years, ISP service installers have shown obvious negligence in the performance of their duties. Cables are laid conceived without additional protection by casings and in easily accessible locations. Any vandalistic hooligan who walks past has an irresistible urge to pull the rope hanging from above and immediately deprive the entire floor of access to the Internet.
Therefore, first of all, be sure to control the entire process of installing cable Internet, require the provider's employees to carry out all operations in accordance with GOST and in a protective design.
The next subtle point is the intra-apartment cabling. If children and pets live in the apartment, a situation of increased danger is created. It is advisable to place wires in inaccessible places. Cats and dogs just love to gnaw, bite and tear all sorts of ropes. At the same time, for some reason, electric fields are very attractive to pets.
You can finally check the performance of the network cable by connecting another computer. If the Internet has appeared, it means that everything is in order with the cables and you need to look for faults in the computer.
It is assumed that the problem is in the system unit or the operating system of the computer. Do not rush to immediately open the system unit. The most common cause is broken Windows settings.
Go to Control Panel\All Control Panel Items\Network and Sharing Center and change the settings
If the Internet worked fine before, it can be assumed that rolling back the operating system to one of the previous states can solve the problem. Often the Internet stops working after excessively active surfing on the network, especially with visiting suspicious sites and without installed antivirus.
If the rollback does not help, open the Internet connection interface and run network connection diagnostics. Check if the network connection settings are correct. Sometimes the reason that the network card does not see the cable is the incorrectly set Internet speed limit. Check and adjust according to the instructions.
If you need to specify Internet settings in specific numbers, you need to contact your Internet provider and get all the necessary information for a specific network connection.
Network card drivers are another weak point, often leading to violations with Internet reception. Where can I get these programs and how to install them correctly? A complete set of necessary drivers is located on the distribution disk of the Windows operating system.
Sometimes it is advisable not to suffer with the search for specific programs, but to reinstall the entire Windows operating system at once. In this case, all settings and settings of the computer will return to the factory settings, and all the necessary drivers will be installed again.
The main obstacle to using this method is the almost inevitable loss of all user settings on the computer and the need to spend time reinstalling all working applications. Usually, they resort to reinstalling Windows when the system itself does not start working very well, slows down, bugs, and often crashes.
You can try a less drastic solution - run an automatic system update. However, if you don't have the latest version of Windows, tech support may have already been repainted and no update exists. The situation is about the same with the left versions of Windows. An attempt to update them will inevitably lead to the destruction of the installed system.
You can download the necessary drivers from the Internet. This path is suitable if you have other computers with a working Internet at home. Go to the official website of the network card manufacturer, find your model and find out which diver you need. Download them and save them to a flash drive or DVD. After that, you can go to the Computer Control Panel and install the drivers using the Wizard.
Conclusion. If, nevertheless, it was not possible to coordinate the network cable with the card, and the Internet still did not turn on, it remains only to turn to specialists for help.
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About 15-20 years ago, no one could have imagined what an important role the World Wide Web would play in our lives. Many probably didn't even know what it was. And today, if the Internet does not work on a computer, then this becomes a real problem. Some people can't even imagine their life without it.
In this article, we will try to answer all the questions and talk about all the reasons why the computer does not connect to the Internet via cable. Don't be surprised by some seemingly simple situations. We decided to talk about them, because. these are real cases from the practice of our computer service, and they baffled our customers.
Check internet cable connection
Yes, we want to start with this. After all, often the simplest thing can be the solution to the problem.
Do not be lazy and check if the power cord is securely connected to your computer. Plug it into the network connector (Ethernet) on the motherboard. Once one of our clients tried to plug the cord into just some hole on the back wall of the system unit, and at the same time wondered why his computer did not see the Internet cable. =)
If you use a router, then the internet wire should be connected to the Wan connector, and the computer with the router is connected with a patch cord connected to the LAN connector. You can read more about this in our separate article on how to connect wifi router to the computer.
Cable or network card problems
So the wire connection was checked, but there is still no Internet on the computer - what to do next? Now you need to make sure that your PC sees the network connection at all. If everything is fine, then the indicator near the connector on the motherboard (or the corresponding indicator on the router) should be on or blinking.
If the PC does not see the connection, then on the screen on the "Taskbar" you will see such an eloquent icon.
In this case, the following development of events is possible:
If no visible damage is found, then you need to call your provider and check with him if there are any problems on his part. It happens that a line break occurs, or network equipment fails, so the computer does not see the Internet cable.
The indicator flashes but still does not work
It also happens that the indicator on the motherboard blinks, i.e. There seems to be a signal, but the icon on the screen is still crossed out. In this case, you need to install or reinstall if there are any problems with it.
This situation can happen if you have just reinstalled Windows, for example. Until you install the necessary network driver, the Internet on the computer via cable will not work.
Connection disabled
The driver is installed, but the computer still does not connect to the Internet? Check if the network connection is disabled. To do this, open "Control Panel" - "Network and Control Center public access". If yours is like the picture.
Click on a connection right click mouse and select "Enable" in the window that opens.
You need to set up an Internet connection
Not all providers use automatic distribution of ip-addresses and dns-servers. Those. It's not always possible to just plug in the cable and everything will work right there. Most often, you need to set up a connection with a provider (PPPOE, PPTP, L2TP), specifying your login and password to connect. What protocol is used by you and how exactly to configure it is better to find out from your provider.
Also, some companies require you to manually register the IP address allocated to you and the necessary dns servers (most often they are specified in the contract with the provider). To do this, open "Control Panel" - "Network and Sharing Center". Next, right-click on your network connection and select Properties. Find "Internet Protocol Version 4" there and click "Properties" again. Enter the required addresses manually and click OK.
And sometimes it happens the other way around, when “manual” settings are set, but you need “automatic”. Again, you need to know what type of connection and protocol your ISP uses.
Problems with the router
The reasons for the lack of network connectivity can be both software and physical. First, it is worthwhile to carry out diagnostics, which consists of three main stages: checking the integrity of the wires, setting up the router and computer.
It is possible that the Internet connection is not available through no fault of yours. If the system worked properly, no additional software was installed, no settings were changed, then the provider is probably to blame. Call the customer service center and find out if they have network problems. Additionally, you can recruit friends who use the services of a similar company.
If there Mobile Internet, go to the provider's official group or website. Users quickly respond to disconnections, so they often write their complaints in the group or on the provider's page. They will be an indication to you that the shutdown is ubiquitous. The only solution is to wait for corrections.
As a rule, if there is no Internet connection, then you will see a red circle with a cross on the tray icon (on the right). This is a clear sign that there is a break somewhere. A rare situation is damage to the network cable or connector. Carefully inspect the entire length of the wire around the apartment, while looking for cracks or other defects. Check the connection to the site where the hub for several apartments is being installed. Breaks can no longer be determined (the cable is underground). This is the provider's job. If the plug is damaged, you will have to change it, and it is difficult to do this without a special tool and skill.
Up to 80% of all problems are related to the incorrect operation of the router. If you cannot connect to the Internet when connected directly, skip this section.
Troubleshooting is possible through a banal reboot. If you have to do this regularly to restore operation, take the device to a service center for diagnosis and identification of the cause. Restarting the router is done in the following ways:
At the same time, restart your PC. Do not clamp on the modem Reset button(This full reset to factory settings as a last resort).
All changes to the router parameters are made in the system menu - the web interface. We will tell you how to get into it and what changes should be made.
To enter you need:
The information is located on a label attached to the case. Look for the Default Settings or "Username/Password" block. Copy these values on a piece of paper or remember.
The main menu of the router will open.
For setting parameters local network the item LAN ("Local Area Network") is responsible. At the discretion of the user, the range of working IP addresses is set here. It must correspond to one of the three ranges allocated for private networks:
Check the machine's default gateway. Through it there is an exchange with other devices. Typically, the default is 192.168.0.1 or 192.168.1.1 (if you use that range).
The second important step is to correctly configure the connection type. Providers can use:
If there is no internet connection, make sure you have installed correct type. Call the supplier and find out the information you need. Some modems in the interface have a "define" button. With it, the connection type is set correctly automatically.
For the network to work, it is often necessary to set the correct router address. This is done as follows:
The address must be within the range of the local network.
Some providers provide Internet access at a specific poppy address, for example, a computer. There is a need to change this parameter for the router. Most manufacturers include a mac address clone feature. It is activated as follows:
If you can't find a function, read the technical manual.
MTU defines the limit level of information transfer. This parameter controls the number of bits useful information placed in a package. Everything is transferred without fragmentation, so you can increase the transfer speed. As a rule, the MTU is set automatically by the device, but not always correctly. A properly configured level will allow:
Use the command Ping www.google.com -f -l 1500. Start with 1500. Then reduce the parameter by 5 units, and then check how many packets were lost. If all 100% of the data has been successfully transferred, change this setting in the router settings (in the connection type selection menu). Consider the fact that the limit values are directly protocol dependent.
If all else fails, and the “no Internet connection” error remains, check your PC.
There is dedicated software for each PC/laptop component. Windows usually installs drivers on its own from its database, but this procedure does not always help. It is recommended to install everything yourself.
The best method is to download the required software from the official website of the network card manufacturer. Find the item "Drivers" or "Support" in the menu, indicate the model and version of the OS you are using. Download the installer and then run the installation.
The second option is the "Windows" tools:
The driver may be missing for some reason. Then specialized utilities, such as Driver Genius, come in handy. Download it from the developer site and then update any outdated drivers. The databases of the utility are regularly updated, so they are always up to date.
Users can change the MAC of the network card itself in two ways. The first includes the following steps:
Remember the MAC address includes exactly 12 digits in hexadecimal s/s only. After the changes, be sure to check the success of the operation through console command ipconfig /all.
The second method involves entering the address through the registry. Navigate to the path shown in the image and change the NetworkAdress line in the DriverDesc parameter.
In some situations, it is necessary to enable "network card" in the BIOS. We will consider the procedure using the example of a classic BIOS (not UEFI). To do this, enter the BIOS and follow these steps:
Now let's see how to perform a similar process on UEFI BIOS versions (example for Asus motherboards):
We advise you to use standard means Windows OS to troubleshoot internet problems. Often this procedure saves you from a connection error, which eliminates the need to study the system menu and BIOS. To start you need:
Optionally enable checks for the network adapter and homegroup. Download and run the FixWin utility on a USB flash drive. FixWin is a powerful troubleshooting tool for operating systems from Microsoft.
Using a direct connection without a modem, set the automatic receipt of addresses. These are the required settings for the OS. They install quickly and easily:
After that, restart your computer and check if the network is working.
Windows has its own protection against viruses and potentially dangerous resources. "Firewall" (or "fiery wall") is able to block access to specific or all sites. Luckily, it's easy enough to turn it off:
Remember that without an antivirus installed, your computer will be completely defenseless against malware from the global web.
Failures in the TCP protocol or DNS cache can result in connection loss. Users can reset the cache on their own:
These actions will not harm system files, so perform them without fear for the safety of the operating system.
Try turning on Federal Compatibility Mode. This is a relevant solution for residents of Russia. Its activation is performed as follows:
It is often impossible to connect to sites due to incorrect proxy server settings. The OS interface has a proxy change item. Go to Internet properties and then open the Connections tab. Click on the "Network settings" button. Next, check the box to use a proxy. Enter the correct IP and port. You can ask your network administrator (service provider) for this information.
If you can’t enter the network through mobile gadgets, for example, the Internet does not work on a tablet, then the most common reasons are:
If another device connects without problems, then the problem is in a specific device.
We have described the most common solution methods available to ordinary users. If they don't help, be sure to call service center. Perhaps your router or network card burned out, then all the described manipulations will be useless. After replacing the components with working ones, of course, the network connection will be restored without additional actions (taking into account that you did not introduce additional problems during your own intervention).
Be careful with Chinese routers. Their menu is made on Chinese so it's almost impossible to figure it out. In such situations, try updating the firmware to Russian. Only after that you can perform any manipulations.
Complain about content
When you lose your Internet connection, there is no need to panic and call all the stations shouting that you, for no reason, cannot get into the open spaces world wide web. The reasons why there may be problems with the cable are as follows:
To accurately determine the cause of the malfunction, a number of actions must be performed.
If the second PC connected to the Internet with the same network settings, then you have a reason to start feeling sad. Firstly, the cause of the malfunction may be related to the breakdown of the port itself under the power cord. The situation becomes more complicated if the port is embedded in motherboard. Replacing it will be difficult financially. It's easier to get a new network card if there is a corresponding slot for it on the computer (which most likely is).
Pay attention to the icon " LAN connection". If this connection is present, then most likely you did not correctly install the drivers or settings on the modem.
Before going to a service center or store, do all the above steps again.
The Internet is full of news about how to solve problems connecting to global network with help wireless technologies. However, when connecting a wired Internet, a lot of problems can arise that will not allow you to receive information from the global network, although they are much less common. If the Internet does not work via cable, the user must clearly know the reasons, as well as ways to solve this problem.
This article addresses the issue of Internet access problems by directly connecting a LAN cable to a computer or laptop, from a router (direct cable connection from a provider is practically no different, only in this case there are slightly fewer reasons for inoperability).
As a rule, the network cable is connected directly to the computer due to the fact that it is not provided and such components are not connected. Of course, you can purchase a special Wi-Fi receiver that can be connected to the Internet to get rid of unnecessary wires located around the apartment, house or office. But this step is not always expedient, because a computer can by no means be called portable device, which can be moved at any moment. That is why, in order not to spend extra money, most computer users use a direct LAN connection.
First of all, if you cannot connect to the Internet, you need to check the following factors:
The above factors are the main reasons for the lack of Internet connection. If the LAN cable connecting the router and the computer is not working, it is enough to replace it. If no devices, with a direct cable connection from the provider, also get access to the Internet, this issue must be checked directly with the provider, who are required to check the integrity of the cable along the entire route, from the computer. Of course, if the LAN cable connection light on the router is not on, you need to check the connection and performance of the router itself.
The most non-obvious problem is the inability to connect to the Internet if the network identifier in the computer tray is lit with a red X or a permanent network identification is performed that does not allow you to connect to the Internet. Let's consider this question in more detail.
If the red X is constantly on the network icon, the reason is that the network card is working.
To check the network card, do the following steps:
You will see a list of all devices that are installed on the computer. Open the list " Network adapters”, where you will have all the network cards that are installed on this computer (in most cases, it is one that is integrated into the motherboard, but there may be more).
If a yellow icon with an exclamation mark is lit opposite it, you need to reinstall the drivers for this device. Visit the official website of the manufacturer and download the drivers for your specific network card model and install them (it is better not to use automatic search drivers, namely to do the installation manually).
If the Internet is still unavailable, do the following:
The circle is constantly spinning Identification or the network is not recognized
This reason may occur when there is a conflict between IP addresses that are present on the network.
To resolve this issue, you need to:
If you have a yellow triangle on the network status, in this case, you have incorrect router settings that do not allow you to connect to the global network.
In such a situation, it is necessary to set the correct router settings (instructions should be posted with the provider on home page, or they can give them to you in the form of a printout) or take the router to the provider so that they configure the device correctly. Also, a similar sign may appear if you have not paid for the Internet and you have been tritely disconnected from the network.
