Please note: in most cases, manual configuration of the network adapter is not required, since our network provides automatic provision of TCP/IP parameters for computers. Follow these instructions only if you have problems with your computer network.

1. Go to "Control Panel": open the menu "Start" and select "Control Panel".

2. If the window does not look like the one shown in the picture below, then switch the view to "Small Icons" by selecting the appropriate item in the menu "View". Go to "Network and Sharing Center."

Important!

Do not use offload functions IPsec task offloading or TCP Chimney offloading. These technologies are deprecated in Windows Server 2016 and may negatively impact server and network performance. Additionally, these technologies may not be supported by Microsoft in the future.

For example, enabling segmentation offload may reduce the maximum sustained throughput of some network adapters due to limited hardware resources. However, if the decrease bandwidth will not be a limitation, offloading functions should be enabled even for this type network adapter.

Note

On some network adapters, offloading features must be enabled separately for send and receive paths.

Enabling scaling (RSS) for web servers on the receiving side

RSS can improve web scalability and performance when the number of network adapters is fewer than the logical processors on the server. When web traffic passes through RSS-enabled network adapters, incoming web requests from different connections can be processed by different CPUs simultaneously.

Please note that due to RSS and HyperText Transfer Protocol (HTTP) load balancing, performance can be significantly reduced if the network adapter does not support RSS and the web traffic on the server does not support RSS adapters. In this case, you must use network adapters that support RSS, or disable RSS in the network adapter properties window additional properties tab. To determine whether an adapter is RSS enabled, you can view the RSS information on the network adapter properties additional properties tab.

RSS Profiles and RSS Queues

The default predefined RSS profile is NUMA Static, which changes the default behavior previous versions operating system. To get started with RSS profiles, you can review the available profiles to understand when they are useful and how they apply to your network or equipment.

For example, if you open Task Manager and look at the logical processors on the server, they are not busy enough to receive traffic, you can try increasing the number of RSS queues from the default value of 2 to the maximum that is supported by the network adapter. The network adapter may have settings to change the number of RSS queues in the driver.

Increasing resources for network adapters

For network adapters that allow you to manually configure resources, such as receive and send buffers, you should increase your resource allocation.

Some network adapters have small receive buffers to save allocated memory from the host. This leads to packet loss and poor performance. Therefore, for intensive reception scenarios, it is recommended to increase the receive buffer value to the maximum.

Note

If the network adapter does not provide it manually, it either configures them dynamically or the resources are given a fixed value that cannot be changed.

Enabling interrupt management

To manage interrupts, some network adapters offer different interrupt levels, buffer pooling options (sometimes separate for the receive and transmit buffers), or both.

It is recommended to control interrupts for CPU-bound workloads and consider the balance between saving host CPU and latency and increasing host CPU savings due to more interrupts and lower latency. If the network adapter does not handle interrupt management, but it does provide buffer pooling, increasing the number of pooled buffers allows buffers to be pooled for sending or receiving, which improves performance.

Performance tuning for low latency packet processing

Many network adapters allow settings to optimize latency caused by the operating system. Latency is the time between the network driver processing an incoming packet and sending that packet back. Typically this time is measured in microseconds. For comparison, the time to transmit packets over long distances is usually measured in milliseconds (larger\ order). This setting does not reduce the time spent per packet during transmission.

Below are some performance tuning suggestions for microsecond networks.

This article shows the steps you can use to enable or disable your network adapter(s) in the operating room. Windows system 10

A Network Interface Card (NIC) is a computer hardware component that connects the computer to a computer network, known as a network connection, and allows the computer to communicate with other devices on the network.

To enable or disable a network adapter, you must be logged in as an administrator

  CONTENT:
 1

How to enable or disable a network adapter using "Network Connections"

In the "Network Connections" window that opens, to disable the network adapter, right-click on the desired network adapter and in the appeared context menu select Disable

To enable a network adapter, in the "Network Connections" window, right-click on the desired (disabled) network adapter and select Enable from the context menu that appears

How to enable or disable a network adapter using Device Manager

To disable the network adapter, in the Device Manager window, expand Network adapters, then right-click the network adapter that you want to disable and select the option from the context menu that appears Disable device

In the window that appears, confirm disconnecting the device by clicking Yes.

To enable the network adapter, in the Device Manager window, expand Network adapters, then right-click on the disabled network adapter and in the context menu that appears, select Turn on device

How to enable or disable a network adapter using Windows PowerShell

  The first thing you need to do is find out the name of the network adapter, to do this as an administrator and run the following command:

The Name line displays the name of the network adapter. Remember the name of the network adapter that you need to enable or disable (Ethernet in this example).

To disable the desired network adapter, run the following command in the PowerShell console:

Disable-NetAdapter -Name" Network adapter name" -Confirm:$false

  Replace Network adapter name in the command above with the actual name of the network adapter you want to disable (for example Ethernet). In this example, the command looks like this:

Disable-NetAdapter -Name "Ethernet" -Confirm:$false

  To enable the desired network adapter, run the following command in the PowerShell console:

Enable-NetAdapter -Name " Network adapter name" -Confirm:$false

  Replace Network adapter name in the command above with the actual name of the network adapter you want to enable (for example Ethernet). In this example, the command looks like this:

Enable-NetAdapter -Name "Ethernet" -Confirm:$false

How to enable or disable a network adapter using the netsh utility

This method uses commands from the netsh (network shell) command line utility, which allows you to display or change the computer's network configuration.

First of all, we need to find out the name network interface, to do this as an administrator and run the following command:

netsh interface show interface

Remember the name of the network interface that needs to be enabled or disabled (Ethernet in this example).

netsh interface set interface "Interface name " disable

  Replace Interface Name in the command above with the actual name of the network adapter you want to disable (eg Ethernet). In this example, the command looks like this:

netsh interface set interface "Ethernet" disable

netsh interface set interface "Interface name" enable

  Replace Interface Name in the command above with the actual name of the network adapter you want to enable (eg Ethernet). In this example, the command looks like this:

netsh interface set interface "Ethernet" enable

How to enable or disable a network adapter using WMIC commands

This method uses Windows Management Instrumentation commands.

First, find out the index number of the network adapter, to do this, run the following command as an administrator:

Remember the index number of the network adapter (in this example 8)

To disable the network adapter, run the following command:

wmic path win32_networkadapter where index=Index number call disable

  Replace Index Number in the command above with the actual number of the network adapter you want to disable (for example 8). In this example, the command looks like this:

wmic path win32_networkadapter where index=8 call disable

  To enable the network adapter, run the following command:

wmic path win32_networkadapter where index=Index number call enable

  Replace Index Number in the command above with the actual number of the network adapter you want to enable (for example 8). In this example, the command looks like this:

wmic path win32_networkadapter where index=8 call enable

Below we will consider in detail the process of changing network parameters (IP parameters) in. In particular, we will tell you how to set up automatic acquisition of an IP address, or how to set the IP address, subnet mask, default gateway and DNS server manually.

So, let’s set up a network connection in Windows 7. To do this, on the taskbar, click on the “ Start", then you select the item " Control Panel».

On home page system control panel, select " Network and Internet».

Then the item “ Network and Sharing Center».

Here, among other things, you can change the network security settings by clicking on the link for the current network settings in the “ View active networks ", create a new connection, change the computer sharing settings, etc. Now let's move on to the " Changing adapter settings", located in the action menu.

Here we will see all the network adapters (network cards) available in the system. If the list of adapters is empty, but you are sure that network cards are present in the computer configuration, you most likely need to install drivers for the network adapter. As a rule, drivers can be installed from the CD that came with the purchased device (motherboard, network card, Wi-Fi adapter).

After the network adapter appears in the system and, accordingly, in the network connections window, right-click on it and select “ Properties».

In the connection properties window, in the list of components, select the component “ Internet Protocol Version 4 (TCP/IPv4)" and press the button located below " Properties" The properties of this protocol will open. network connection. Here you can determine how to obtain an IP address, and, accordingly, parameters for accessing the network.

You can leave the IP address to be obtained automatically, or you can specify the IP address, subnet mask, default gateway and DNS server manually. These settings can be obtained from the administrator of the network to which you are connected. this computer, or from your Internet provider. Having decided on the connection parameters, close all windows with the “ OK».

These changes are applied immediately. Restarting the computer or any other additional actions is not required.

Did this article help you?

A network card or network adapter is needed to create a local network, with which you can connect several computers to each other, as well as to connect your computer to the Internet. Sometimes the card starts to work incorrectly, but you can restore it yourself using standard Windows 7 tools.

When to configure the adapter manually

You need to update drivers or change card settings if you have problems connecting to the local network or connecting to the Internet. Please note that such problems are not always caused by the network adapter, but sometimes it is because of it that errors occur that block access to the network.

How to find out the adapter model

The first thing to do is check whether the card is connected to the computer and whether it is recognized by it. The adapter is included with all laptops and computers by default, so if you didn’t assemble your device piece by piece yourself, you shouldn’t think about its absence. But there are times when the wires going to it become disconnected or come off.

A network card (or network adapter) is a device that allows a computer to communicate with other devices. On modern PCs and laptops, the components of this device are integrated into the motherboard.

You will need to open the computer case and check this only if the network card is not displayed in the “Device Manager”:

Card activation

If the network card is connected but not enabled, it must be enabled manually. There are several ways to do this. If the card is not damaged, turning it on will not cause errors.

Via "Device Manager"

The previous section described how to view the card model through the “Device Manager”. Find the adapter you need and right-click on it and select the “Enable” function. If the card is successfully turned on, the down arrow icon will disappear from its icon.

Click on the “Enable” button in the “Device Manager”

Using the Control Panel

1. Using the Start menu or any other method, launch the Control Panel on your computer. Open the “Control Panel”
2. Go to Network and Sharing Center.
   Go to the “Network and Sharing Center”
3. Click on the sub-item “Change adapter settings”.
   Click on the sub-item “Change adapter settings”
4. A list will open, which will most likely contain several cards. One serves as a connection to wireless network, and the other to the wireless one. There may be additional adapters in the list. Select the one you need and right-click on it and select the “Enable” function. Wait until activation is complete: the red cross icon on the card icon should disappear.
   Click on the “Enable” button to activate the adapter

Via BIOS

If the card cannot be activated using the previous two methods, then perhaps this can be done through the BIOS settings.

1. Entering the BIOS is done using the Delete key, which must be pressed while turning on the computer. Perhaps the key that activates the BIOS will be different: this will be indicated in the hint that appears in one of the corners of the screen when the logo appears. If you recognize the model of your motherboard, you can find on the Internet the button responsible for entering the BIOS.
   Enter the BIOS by pressing the Delete key
2. The design and location of BIOS items and sections may differ depending on its version and motherboard model, but the following algorithm of actions is approximately the same for all versions. Go to the "Advanced" tab.
   Open the “Advanced” tab
3. Go to the “Onboard Devices Configuration” subsection.
   Open the subsection “Onboard Devices Configuration”
4. To enable the card, set the “Onboard Lan” line to “Enabled”. "Disabled" means the card is disabled.
   Set the “Enabled” parameter for the “Onboard Lan” line

Video: how to enable a network card in Windows 7

You can disable an extra card using the same methods that allowed you to enable it: through the “Device Manager”, “Control Panel” and BIOS. Only in the last step of the method through the “Device Manager” you need to click the “Disable” or “Delete” button, in the “Control Panel” click the “Disable” button, and in the BIOS change the value from “Enabled” to “Disabled”.

Disable the card through the “Control Panel”

Updating and installing drivers

Drivers are necessary to ensure that the card does not conflict with other components and fully performs all its functions. Usually they are installed automatically when you first connect the computer adapter, but sometimes the drivers fail or become outdated. In both cases, you need to reinstall them yourself. This is done through the “Device Manager”.

Automatic update

The positive side of this method is that you will not need to search for drivers manually, the negative side is that you will need an Internet connection, which may not be available if the network card does not work. But if you have the opportunity to connect to the network, you can update the drivers in the following way:

Manual update

The advantage of this method is that you can download the card drivers manually from another computer that has Internet access, and then transfer them to yours and install them. It is recommended to download card drivers strictly from the official website of the company that created it.

What to do if drivers are not installed

If at any stage errors occur that prevent you from installing drivers, you must remove the adapter from Device Manager and restart the computer.

Removing the card from the “Task Manager”

After the reboot, open the list of connected devices again, and in it there is the “Other devices” sub-item. It will contain " Network controller", which is your card. Install drivers on it using one of the methods described above.

The network controller is located in the “Other devices” sub-item

Video: how to update the network driver

View map options

If you want to find out the physical address, IPv4 parameters, gateway address and other possible information about the adapter, then follow these steps:

Additional method

You can also find out the card parameters via “ Command line" using the command "ipconfig /all". “Command Prompt” can be found by going to “Start” - “Accessories” - “Command Prompt”. Running this command brings up information about all physical and virtual adapters recognized by the computer.

Run the command “ipconfig /all” to obtain information

How to change card settings

The previous paragraph described how to view information about the network adapter. But you can not only see it, but also change it by following these steps:

Video: how to configure a network card

Updating the network card

The only way to update a network card is to install more recent drivers on it, in which the developers have corrected some previously made errors. New drivers are installed directly on top of the already installed ones. If you cannot install on top, you should remove the device, restart the computer and repeat the procedure. How to do this is described in the section “Updating and installing drivers.”

Can I use two cards?

Two network cards can work simultaneously and relieve each other if one of them is aimed at working with Internet traffic, and the second is aimed at working with a local network. To do this, you need to correctly set the IP, DNS and router parameters for both adapters.

Resetting the adapter

You can reset the adapter settings, namely TCP/IP and DNS, using standard Windows tools or using a third-party program from Microsoft. Conditions under which a reset must be performed:

• Internet connection speed is low or unstable;
• files are downloaded broken, this happens due to the same instability of the Internet;
• When connected, the Internet works fully, but after a few minutes problems begin;
• Manually changing the adapter settings led to other problems with the Internet.

Standard method

Launch “Command Prompt” by going to “Start” - “Accessories” - “Command Prompt”, and enter the commands “netsh int ip reset c:\resetlog.txt”, “netsh int tcp reset” and “netsh winsock reset” which will perform a factory reset. Done, the registry branches and system files will see changes, and you may need to restart the computer.

Execute the commands “netsh int ip reset c:\resetlog.txt”, “netsh int tcp reset” and “netsh winsock reset” in the “Command Line”

Through a third party program

You can download the NetShell program from Microsoft, which does not require installation, from their official website. Once you launch it, follow the instructions that appear on the screen to reset all changed settings.

Download the program to automatically reset the card settings

Solving adapter related errors

When setting up or using the adapter, the errors described below may occur, which will prevent you from using the Internet or local network. Most of them can be fixed without replacing the card.

The card does not have valid IP settings

You may encounter a similar error when setting IP parameters or scanning a network module using standard means Windows designed to automatically fix errors.

Manually obtaining settings

If you have not changed the settings of the adapter, that is, it obtains an IP address automatically, then manually requesting an IP may fix the problem:

Reset settings

Resetting settings to default values ​​is the most reliable way. How to do this in several ways is described in the “Resetting the adapter settings” section.

Manual adapter configuration

If the previous methods did not help, you should try setting the settings yourself:

Error "This device cannot start"

This error appears in the “Device Manager” not only with the adapter, but also with other connected devices, and has code 10. To fix it, you need to update the card drivers. How to do this is described in the section “Updating and installing drivers”.

Adapter does not work, does not install, or does not appear

If the adapter does not work, does not install or is not displayed, then the reasons may be the following:

Changed map settings disappear

If, after you close the window with the changed settings or restart the computer, all the changes you made disappear as if you never made them, then there are two ways to solve this problem: set the settings by running commands and change the incorrect values ​​in the registry.

Making changes via the Command Line

Launch “Command Prompt” with administrator rights and sequentially execute the following two commands: “route delete 10.0.0.0” and “route -p add 0.0.0.0 mask 0.0.0.0 X”, in the second command “X” is the IP of your router, which usually looks like "192.168.0.1", but in your case it may have a different meaning.

Changing registry settings

A network adapter is needed to connect to the Internet and other computers. If it does not work or is not displayed, check its connection to the computer with wires, and then the status of its drivers and settings. Don't forget to make sure that the network card is enabled in the BIOS.

When operating system reinstalled, the user may encounter the problem of a missing network driver. Without this driver it is impossible to start either wireless or wired network. If you have the disk, there are no problems, just install the program. And if it is missing, you need to find, for example, a mobile phone/tablet with a connected network in order to download the driver. To avoid such problems, when reinstalling the operating system, you must follow the correct algorithm of actions.

The driver is link between the operating system and the internal components of the computer, that is, this program connects the OS with the motherboard, video and network cards, office equipment. These programs are developed by the same companies that produce PC equipment and electronic office equipment, with which they interact personal computer. When buying a computer, the user does not think about various drivers, since they are already preinstalled in the system. But, for example, after the first reinstallation of the OS or the purchase of a new computer, the user will be faced with their absence.

If there is no driver for the network on the computer, there is no way to go online and download from official sites, which automatic mode will scan the operating system and install all missing drivers. When might you encounter problems installing a network device driver? In these three cases:

1. Even a new computer, just from a store, may lack an operating system, and as a result, a driver.
2. When the operating system is installed/reinstalled.
3. When a system crash occurs and the driver stops working.

The first case is the easiest. The box with your purchase should contain driver discs. The network device driver is located on the software disk for the motherboard.

Since in lately Since users are increasingly assembling computers themselves (choosing internal components), there may be no DVD drive, and as a result, it is not possible to install any driver from the disk.

In this regard, it is advisable to keep the full set of drivers in a separate folder on your PC or download them to a flash card. In this case, you don't have to search mobile device to go to the official pages of the manufacturers’ websites and from there download a program that will automatically install the missing drivers.

Installing the network driver

Before installing the driver, you must identify your computer. All brands and models of computer internal equipment are encoded with special “ciphers”. This is done so that during installation the driver can identify the computer model and its manufacturer. The network device driver code looks like this: PCI/TECH_xxxx&DEV_xxxx&SUBSYS_xxxxxx. TECH means that the computer hardware was manufactured by A4Tech, and DEV is the device ID.

Step 1. Equipment identification

In order to find out the code, click Start and enter device manager in the search field. Next, a menu will open with which you can identify the equipment. Click on " Network adapters» and select the name of the controller.

Once you do this, the Details section will open. Find their "Properties" and select "Model ID". The first line contains complete information about the device model.

Step 2. Install/update the network adapter driver

This will be the identifier of your equipment. Now you need to find it on the Internet by entering the name in any search engine, for example.
The search engine will give official page driver and you need to download it to your PC. And then follows the installation procedure itself. If you need to update a network device driver, you do exactly the same thing: find the ID, enter it in the search, download and install.

To install a missing or recent version of the driver, use Device Manager. Perform the same actions in the last step " Update drivers».

Select “Search for drivers on this computer.”

Go to the folder where you saved the necessary drivers downloaded from the manufacturer’s official website, and install them using the “Next” button.

Many users, before installing new driver versions, remove old ones to avoid conflicts and inoperability, because even if you did everything correctly, the Internet may not appear on the computer. In this case, you still need to take the advice of users and remove old versions.

How to do it! In Device Manager you can remove old version network driver. Agree with the choice, and the system will remove the network device driver that was previously installed on your computer.

There are two steps left and your computer will work fully. Step one is to reboot and open Device Manager. In place of the removed driver, “ Network controller" in the section " Other devices».

At the final stage, follow the steps in (updating/installing network device drivers).