Network card this adapter is not connected. Why is there no network adapter in Device Manager?

The network adapter for the computer/laptop is responsible for access to the Internet, which modern devices connects via USB or BNC connector. Because it's built-in, and the ability to explore World Wide Web In most cases, the technician sets it up; the question of what it is and how to make it work arises if breakdowns occur. It's not easy to figure this out, but it's quite possible.

What is a network adapter

An additional connecting element between a PC or laptop and other devices that provide access to the Internet is called a network adapter (terminology from the manufacturer Intel processors). In the majority modern computers it is built into the motherboard. There are other names for the device. What is a network card, board or Ethernet adapter? These are all variant names for one device.

What function does it perform?

In the model OSI systems The network adapter is responsible for the functioning of the second, data link layer. In conjunction with the driver, it also ensures the operation of physical equipment. Each manufacturer decides for itself the task of distributing responsibilities between them. For link layer In addition, the OS (operating system) module responds. Together they perform two main operations: sending and receiving data from the network to the PC and vice versa, and also take part in:

• monitoring incoming/outgoing traffic;
• remote configuration change;
• improving network performance and prioritization;
• remote activation from central workstation;
• encoding/decoding sent/received data;
• packet formation (transmission/reception mode).

Classification

Although most modern PCs network cards built-in, they can break, which is why they will need to be replaced. To do this, it is not necessary to completely disassemble the computer, since there are two large groups these devices:

1. External. Some are connected via the PCI connector of the motherboard, others use the ISA bus.
2. Built-in. They are also called integrated. The output is presented as a connector on the panel near the USB ports. Nearby there are indicators - LEDs, which are used to guide you regarding the performance of the device. Plus of the built-in device: convenience. Cons: unreliability.

3Com approached classification from a different angle. In it, all adapters are divided into generations. Varieties include:

1. First generation adapters. Built on discrete logic chips. They had low performance - even if the computer memory was large, the adapter buffer could only hold one frame. There were many types, each of which needed its own driver. In addition, the OS modules were not standardized. As a result, configuring the network card was difficult. The devices were used on old computers.
2. Second generation adapters. ASIC chips are used, the size of the buffer memory allows for multi-frame transmission in parallel mode. The reliability of 2nd generation adapters has been increased, and standard specifications for drivers and interfaces have been developed. In addition, the transmission speed has increased.
3. Third generation. This latest devices, to which 3com refers its EtherLink III boards. Frame processing is conveyor-based. The adapter is configured automatically. It is connected to the network via a BNC connector (for cable type - twisted pair).
4. Fourth generation. High speed boards that support standards Fast Ethernet.
5. Fifth generation. Gigabit Ethernet, supporting modern network protocols.
6. Sixth generation. 400 Gigabit Ethernet, currently in development. Will begin to be used no earlier than 2020 for home PCs. Sixth generation Ethernet adapters for servers have already appeared (they are used by providers).

There are other parameters by which devices are classified. The main ones are listed below:

• by data transmission medium (wired, wireless);
• by functions performed (implementing the first two OSI levels/first four);
• by topology (similar local networks: tire, ring, star, tree, combined);
• by type of PC (client, server);
• by bus type (ISA, EISA, PCI, MCA).

Species

Although in order for the selection and configuration of the device to be correct, it is advisable to know some of the subtleties and features of the adapters and have all the knowledge system administrator optional. The main types of boards you need to know:

• wired;
• wireless;
• virtual.

They vary in body size and external parameters, can be connected directly to the motherboard or via a USB socket. Otherwise they look similar, representing a cable with a corresponding key for connecting to a computer port. Provide data transfer wired network, connect the PC/laptop and the router. Sometimes sold complete with software(drivers) for various operating systems, but most modern operating systems find and install it automatically.

Wireless

Often a network adapter refers to a wireless type of device. It is small, mobile and universal, it is also called a modem (although they are designed for 3G), but within this variety the concepts are interchangeable. To work with wireless networks - that’s what the network card is used for in this case. Looks like a flash drive, connects to a USB port, configures and searches for available Wi-Fi points. A convenient thing if integrated peripheral device broke.

Virtual

Designed to create private and secure networks(VPN). They work using special programs, are built on the basis of physical adapters. Installation depends on type virtual card and selected software. For example, in the Windows operating system there is a special “Control Panel” section for configuring the adapter. Another feature of this type of board is the possibility of remote configuration.

The two most important points regarding connection: what type of connector is used by the network adapter and what drivers are needed for its operation. There may be several answers to the first question: USB slot, PCI port or ISA bus. The last two options involve connecting directly to the motherboard. In most cases, drivers are detected automatically or are included with the adapter. If not, you need to search for them on the Internet by device model. Full instructions Connecting a wired network card:

1. Buy a device in one of the stores in Moscow, St. Petersburg or any other city in the Russian Federation.
2. Unpack, read the instructions, use it to determine the type of connector.
3. Connect the plug to the desired port of the router and computer.
4. (option a) See automatic installation, wait for it to finish.
   (option b) If there is a disk with drivers, insert and run the program.
   (option c) Find the necessary software on the Internet (use proven services!), download and run.
5. Go to Control Panel – Device Manager – Network Adapters. The list should display the name of the board. If there is no exclamation mark next to it, everything is installed correctly.

Connection wireless device carried out in a similar way, but in this case only a PC and a USB connector are used. Drivers are installed automatically. After this operation, the computer immediately begins to search for available Wi-Fi networks. Conflicts with the OS are possible; to avoid them, you need to choose a device with correct parameters(will be discussed below).

If there is no device manager network adapter, this means something went wrong during the connection. But what exactly? Main reasons and ways to solve them:

1. Board fault. Unlikely cause unless there was physical damage. If there were, you need to take it for repair or replace the adapter yourself.
2. Errors in the operating system. Solution: Roll back to the previous restore point. If it is not there, reinstall the system.
3. Driver problems. Solved either similarly to the previous point, or updated in manual mode. You need to download the software from the official website, since dubious services main reason, why the network card for the computer does not support the driver.
4. Built-in intervention antivirus protection Microsoft Windows or other. Start the system in safe mode, disable your antivirus and check the operation of the equipment.

What to do if the adapter does not work

Make sure that the computer sees the device; if not, use the instructions above. Check your system for viruses using the built-in OS protection. If the problem persists, check out the following solutions:

1. Run diagnostics on the card through Device Manager. To do this, call the context menu and find the corresponding item.
2. Remove all adapters from the Device Manager list. Restart your computer/laptop.
3. As Administrator, open command line. Scan the system: enter sfc /scannow and Enter.
4. Update or roll back your drivers.
5. Check the board's operation indicators. If they don’t light up or blink, it’s time to contact a service center.

Network adapter price

The higher the generation and capabilities, the higher the cost of the device. But there is no reason to chase the highest price, since the question is not what technology the adapter supports, but also what technology the computer processor can work with. The characteristics can be viewed on the packaging, checked with the seller, or read on the screen by going to the manufacturer’s official website. The price breakdown for Moscow and the region is in the table below:

Video

Good day.

When installing new Windows, as a rule, the system automatically configures many parameters (will put universal drivers, will set the optimal firewall configuration, etc.).

But it just so happened that some moments when Windows reinstallations- are not automatically configured. And many who reinstalled the OS for the first time are faced with one unpleasant thing - the Internet not working.

In this article I want to look at the main reasons why this happens and what to do about it. (especially since there are always a lot of questions regarding this topic)...

The most common reason why there is no Internet (note after installing a new Windows OS)- this is the absence of a network card driver in the system. Those. the reason is that the network card simply doesn't work...

In this case, a vicious circle results: There is no internet, because... there is no driver, and the driver cannot be downloaded - because... no internet! If you don’t have a phone with Internet access (or another PC), then most likely you won’t be able to do without the help of a good neighbor (friend)...

Usually, if the problem is related to the driver, then you will see something like the following picture: a red cross will light up above the network icon, and an inscription something similar to this: "Not connected: no connections available"...

In the control center - on the right there will be a tab "Changing adapter settings" - this is what you need to open.

In network connections you will see your adapters with drivers installed. As you can see in the screenshot below, my laptop does not have a driver for the Wi-Fi adapter (there is only an Ethernet adapter, and even that is disabled).

By the way, check, it’s possible that you have the driver installed, but the adapter itself is simply turned off (as in the screenshot below - it will just be gray and it will say “Disabled”). In this case, simply enable it by right-clicking on it and selecting the appropriate menu in the context menu that pops up.

Network connections

I also recommend looking into the device manager: there you can see in detail which equipment has drivers and which do not. Also, if there is a problem with the driver (for example, it does not work correctly), then the device manager marks such equipment with yellow exclamation marks...

To open it, do the following:

• Windows 7 - in the Run line (in the START menu), paste devmgmt.msc and press ENTER.
• Windows 8, 10 - press the WIN+R button combination, paste devmgmt.msc and press ENTER (screenshot below).

In Device Manager, open the Network Adapters tab. If your equipment is not in the list, it means there are no drivers in the Windows system, which means that the equipment will not work...

How to solve the driver issue?

1. Option #1 - try updating the hardware configuration (in Device Manager: just right-click on the network adapters header and select the desired option. Screenshot below).
2. Option No. 2 - if the previous option did not help, you can use special utility 3DP Net (It weighs about 30-50 MB, which means it can be downloaded even using your phone. Moreover, it works without an Internet connection);
3. Option number 3 - download on the computer of a comrade, neighbor, friend, etc. special driver package - ISO image by ~10-14 GB, and then run it on your PC. There are a lot of such packages floating around the Internet, I personally recommend Driver Pack Solutions ;
4. Option No. 4 - if none of the previous ones worked and did not give results, I recommend looking for the driver by VID and PID.

And this is what the tab will look like when the driver for the Wi-Fi adapter is found (screen below).

If you can't connect to the network after updating the driver...

In my case, for example, Windows refused to search for available networks and after installing and updating the drivers, it still showed an error and an icon with a red cross.

Next, the troubleshooter will automatically begin to fix problems related to network inaccessibility and advise you on each step. After the button has been pressed "Show list available networks" - the troubleshooting wizard configured the network accordingly and that’s it available Wi-Fi networks became visible.

Actually, I stayed finishing touch- select your network (or the network for which you have a password to access) and connect to it. That's what was done...

Entering data to connect to the network... (clickable)

2. Network adapter disabled / Not connected network cable

One more common cause lack of Internet is a disabled network adapter (if installed driver). To check this, you need to open the network connections tab (where all network adapters that are installed in the PC and for which there are drivers in the OS will be shown).

The easiest way to open network connections is to press the WIN+R buttons together and enter ncpa.cpl (then press ENTER. In Windows 7, the run line is located in START"e).

Opening the Network Connections tab in Windows 10

In the network connections tab that opens - pay attention to the adapters that are displayed gray (i.e. colorless). Next to them there will also be an inscription: “Disabled”.

Important! If there is nothing at all in the list of adapters (or there is no adapter that you are looking for) - most likely you simply do not have it in your system the required driver(the first part of this article is devoted to this).

To enable such an adapter, simply right-click on it and context menu select "Enable" (screenshot below).

After the adapter is turned on, pay attention to whether there are any red crosses on it. As a rule, the reason will even be indicated next to the cross, for example, in the screenshot below “The network cable is not connected.”

If you have similar error- you need to check the network cable: perhaps it was chewed by pets, hit by furniture when it was moved, the connector was poorly crimped, etc.

3. Incorrect settings: IP, default gateway, DNS, etc.

Some Internet providers require you to manually set certain settings TCP/IP (this applies to those who do not have a router into which these settings have been entered once, and then you can reinstall Windows at least 100 times).

You can find out whether this is so in the documents that your Internet provider gave you when concluding the contract. Usually, they always indicate all the settings for Internet access (as a last resort, you can call and check with support).

Everything is set up quite simply. In network connections (how to access this tab is described above, in the previous step of the article), select your adapter and go to its properties.

Ethernet Network Adapter Properties

Not long ago, the author of these lines encountered an unpleasant situation - one of the computers, which had worked fine previously, was connected to a router in a new location using a wired connection. Several devices regularly receive Internet from this router, but the newbie himself refused to work, giving the error: “The network adapter does not have acceptable parameters IP settings".

That is, a patch cord, aka Ethernet cable, perfectly provides a regularly humming system unit with the Internet, and when connected to a long-suffering system unit, the latter stubbornly ignores the connected Internet.

What is this error and how to get rid of it - let's figure it out together.

We try to turn it off and on

I’ll admit right away that in my case the good old method helped me. I simply unplugged the router and then reconnected it to electrical network, and everything worked on its own. However, before I tried this miracle method, I had to thoroughly study the problem.

Therefore, first of all, try to “turn off and then turn on again” your problematic device, and also reboot the router. Well, what if it actually helped me in the end?

You can also enable or disable the Internet connection manually. To do this, go to the “Change adapter settings” menu. You can find it in the following way:

Right-click on the connection icon and select “Control Center..”

You can also use the following method: press on the keyboard Win + R, dial ncpa.cpl and confirm your entry with the key Enter.

In the window that opens, select your connection and click disable, and then, in the same way, using the right mouse button, click enable.

Checking the connection. Didn't help? Let's move on.

Update the IP address

We are trying to update the IP address automatically. For this we use the command line.

Launch the command line and enter the following code:

ipconfig /release

ipconfig /renew

This method is the safest, and most likely the most useless.

Resetting the TCP/IP protocol

Let's try to reset network settings. To do this, use the command line again, and then enter the following queries:

netsh int ip reset

netsh int tcp reset

netsh winsock reset

Afterwards we restart the computer. Wrong again? Let's try the following.

We try other ways to solve the error: “The network adapter does not have valid IP settings”

• Try disabling your antivirus or third-party firewall.
• Remove Network adapter V Device Manager, and reboot. After such an execution, the drivers will be automatically reinstalled. If this does not happen, try downloading the drivers from the manufacturer’s official website.
• Uninstall the program Bonjour from Apple, if you have it installed, sometimes it causes a crash.
• Check if the network card is disabled in the BIOS.

I hope your problem will be solved as easily and painlessly as in my case. Just in case, it’s worth checking that the cable and network adapter are working properly. Try disconnecting and reconnecting the cable. Update your drivers operating system. If it doesn't help, maybe it's worth it

The idea of ​​writing this article was born at the moment when, at the request of a friend to fix a problem on his computer with a WiFi connection, it was discovered that The network adapter is not in the manager Windows devices . Let me remind you that this device is responsible for connecting to the Internet via wireless signal. We began to figure out the essence of the problem step by step, and I will share this algorithm with you today.

Let's think about it and systematize everything possible reasons, according to which the device manager does not see the network adapter.

WiFi adapter is broken

This doesn’t happen often, but it does happen, so this option cannot be ruled out. In my practice, there have been cases where computer network cards burned out that were connected to PCI slot motherboard inside system unit, and much smaller cards installed in laptops. Since the device is not working, the adapter does not appear in the device manager.

USB connector is faulty

Continuing the topic of breakdowns, we will touch on the option in which the problem is not in the adapter at all, but in USB port which simply doesn't work. That is, when your computer connects to the Internet through an external adapter connected to this same USB. To check if this is true

• try to insert the adapter into the adjacent port
• if it doesn’t work, or if it’s the only one, which is not uncommon on laptops, then try connecting another device to this connector, for example a mouse

In the case when the mouse works, but the adapter does not, this is the reason. If the mouse doesn’t work, then it’s definitely a USB problem. And it’s even worse if none of the ports is functioning - this alarm bell may indicate either the absence of some drivers for the motherboard, or serious malfunctions associated with the operation of bridges on the motherboard - but this is a topic for another article...

USB extension cable is faulty

In order to better catch a signal that is poorly reaching the computer, “advanced” users use USB extension cable, which is placed closer to the access point. So, this could be the whole problem - either the cable is leaky or the connector is loose. Try plugging the adapter directly into the computer. Another type of such connection is through a USB hub, when the laptop has a shortage of USB inputs. But there may also be a problem with insufficient power supply to the device. If it is quite enough for flash drives, then it may not be enough for a wifi whistle.

Drivers not installed or lost

Drivers conflict with others or are not suitable for this version of Windows

The case is quite rare, but it happened to me once, as a result of which I was forced to give up one wifi models adapter and install another one. I couldn’t figure out what was going on - it kept appearing in the dispatcher and then disappeared again. Even repeated removal and installation of factory drivers did not help. Perhaps they simply did not support Windows 10 correctly - I was never able to find out for sure.

Here is the experience of solving a problem when the network adapter is not in Windows Manager, I hope it will be useful to you in correcting this error.

Question: The laptop does not see the network adapter

Added after 1 hour 21 minutes
UPD: When you turn on the display hidden devices, the adapter is displayed in the manager, however, it says “This device is not currently connected to the computer. (Code 45).”

Answer: Settings in bios setup Tell me, if it doesn’t help, then there’s probably a problem with the hardware, it should also be visible there in the boot menu if it’s alive.

Question: Can't see the network adapter

Answer:

Message from kilbuz

where can I find them?

On the motherboard manufacturer's website it is known

Question: The network adapter fell asleep and cannot wake up

The essence of the problem.
I installed a new one windows system 7 maximum x64. I copied all the necessary data from Windows folders old and successfully erased it. Then I tried to install the network driver in order to gain access to the network and install all the other drivers. The driver was not installed. Instead, he gave me this: "the realtek network controller was not found if deep sleep mode is enabled please plug the cable"
I went online to solve the problem, but nothing I found helped.
What I did:

• tried other drivers and driver analysis programs (the latter did not see the network adapter at all)
• installed in BIOS standard settings, turned on and off the realtek network output (and it is in the BIOS)
• unplugged the computer from the network and removed the RAM all night to motherboard completely switched off

Now I took out the RAM again and left it for the whole day, because they write that different motherboards need different times to turn off

Answer:

Message from kloskon

I just don’t understand why this adapter is visible in the BIOS

Because it is flashed in the BIOS. My motherboard has it in the BIOS LPT port, but it’s not on the motherboard at all.

Question: Windows 7 does not see the network adapter!

Motherboard: Gigabyte Z77P-D3

Answer:

Message from MrTwangy

Everything worked!

Who would doubt it
Good luck

Question: Windows 7. The network adapter has disappeared

Answer: Sharik,

In Device Manager, remove the network adapter. Then scan there to new devices. It should help, if it doesn't help, download the drivers.

Question: Windows 7 - network adapter disappeared

Answer: I saw the network adapter in the device manager after I wiggled the connector a little

Question: Wi-fi adapter. The laptop stopped finding the adapter.

Answer: try
check
1) control panel - power supply - current power plan settings - change additional power settings - adapter settings wireless network- energy saving mode - maximum performance
2) Control Panel\Network and Internet\Network Connections
PCM wirelessly network connection- properties - configure - power management
Allow the device to be turned off to save power - must be turned off

Take a screenshot so you can see all the properties
3)Control Panel\Network and Internet\Network Connections
RMB via wireless network connection - properties - configure - additional

So play with the driver, try older versions

Question: The computer does not see the Wireless adapter

Screen 1-
Screen 2-

Answer: Well, at the docks I didn't find what was on board wifi adapter. The description talks about support for MSI M-Cloud technology, which allows you to do something like your own home cloud- but that's just software solution. To implement it, the dockets directly state that you must have a wireless network module installed:

You must have an active network connection and an installed Wi-Fi moudle to
enable Soft AP.

So, alas, you need to purchase a wireless card separately.

PS: And install the rest of the uninstalled devices.

Question: Network adapter

Answer: Very strange. I just turned on my laptop. It connected to wifi and works fine. If there are any problems, I'll write them down.

Question: Network adapter drivers fail, freezes and crashes from games

Added after 39 minutes
Network drivers fall off every time you restart your PC...

Answer: I accidentally went to a phishing site... in the search engine they made the same logo with the official site. Well, without reading the description of the link, I clicked on the picture. The antivirus program was disabled... well, seeing that the site was not the same. He immediately left... well, he didn’t attach any importance to it. A few hours later, while watching a video... I notice that the video card is loading at 100%. Well, I rebooted the PC...downloaded other web pages, etc. he discovered 2 malicious file and deleted them. Afterwards I noticed freezes in games with crashes. And again, percent. It started loading 100% when idle after quitting games... I had to reboot. In GTA5 online, the video card drivers crashed and were restored... Afterwards I tested the video card in a furmark... 68 fps, the temperature did not rise above 80c. Afterwards I was advised to download Malwarebytes Anti-Malware... well, I scanned the system with it and viruses came out again. Well, I deleted them as I was advised on a special website. but every time there were new viruses... Afterwards, Kaspersky scanned the system and it cured... Some files were quarantined... some were deleted. Well, crashes from games have not stopped... and the system has also started rebooting and crashing network drivers. In any games and at any settings, the loading of the video card jumps like a sewing machine. Asus video card r9 290x dc2 never warmed up above 80c. I checked it on another system... everything is fine. And yet... about a week ago or a little more... suddenly, when I turned on the PC, I was immediately thrown into the BIOS... I did not reinstall the system after the viruses.