the Internet Is the best invention of mankind, it unites more 35% population of the Earth, and also opens up unlimited opportunities for learning, work, recreation and communication. It appears on your computer using a network adapter that has a wireless (Wi-Fi) or wired interface. In this article, I will talk about configuring the adapter for network connectivity.

There are several types of internet connection:

1. Telephone line
2. DSL, cable or wiring
3. Mobile communications (2G, 3G, 4G - LTE)
4. Optical fiber
5. Satellite Internet

Each of them has its own specific characteristics, however, the computer is most often connected using a conventional twisted pair — rJ-45 cable, or using Wi-Fi connections to the router (which, in turn, also works through twisted pair or USB modem).

Customization. Since the majority of users use Windows 7, I will use it as an example.

To do this, we go to Control Panel -\u003e Network and Internet -\u003e Network and Sharing Center, then on the left in the menu select Change adapter settings.

Here you can see a list of all computer adapters and their connection status, including Bluetooth adaptersas well as virtual adapters like Hamachi.

Normal twisted pair connection (no routers, modems)

Twisted pair cable - RJ-45 - 8P8C

There are also 2 options here: you need to configure the connection and connect each time, or your provider supports DHCP technology and you just need to plug the cable into the connector.

Depending on your option, you need to correctly configure the adapter.

Option 1

We go to the list of adapters. Select the desired one (Local Area Connection ...) and click on it with the right mouse button (RMB), here we select Properties... In the list that opens, select the component Internet Protocol version 4 and press the button Properties... Here it is necessary to enter the settings given by your operator.

Option 2

The operation is similar to Option 1, only in the properties of the protocol, check the boxes Obtain an IP address automatically, Obtain a DNS server address automatically.

Connecting using a router

Usually a router has 5 connectors ( 4 LAN and 1 WAN). You connect the cable from the Internet to the WAN port (it is separate from the rest), and then using the second cable / Wi-Fi adapter, connect the router and the computer. After that (See Option 2 in twisted pair connection), these settings are by default in the Wi-Fi adapter.

To configure the Internet later, you go to the local address of the router ( 192.168.0.1 or 192.168.1.1 — default) and perform the required actions.

How to set up an Asus router You can read in this article -

I will not describe the rest of the types, you can ask all questions in the comments.

Now more about adapter settings

To see these settings, you need to go to the list of adapters, press RMB on the desired adapter, select Properties, then under the line with the full name of the adapter, click the button Tune... Go to tab here Additionally.

Basically, the properties are the same for all adapters, however there is still a slight difference.

I will tell by example D-Link DGE-560T.

Below is a table with the name of the property and its description.

Property name	Description	The values
ARP Offload — ARP Offload	The function allows you not to enable the adapter to respond to an ARP request (determining the MAC address by IP)	Disable - the function is disabled.
Auto Disable Gigabit (Powersaving) — Auto shutdown speed in 1 Gbps	Power Saving Feature - Disables gigabit speed when reconnecting cable.	Disable - the function is disabled. Re-Link, Battery - disconnect when running on battery. Re-Link, Battery or AC - always disabled.
Energy Efficient Ethernet - Energy efficient internet		Disable - the function is disabled.
Flow Control -Flow control	A special technology to slow down the data flow if the adapter did not manage to process the previous information. Increases network performance.	Disable - the function is disabled.
Green Ethernet -Green internet	Reduced adapter power consumption.	Disable - the function is disabled. Enable - power saving is enabled.
Interrupt Moderation -Interrupt coordination	A technology that allows a thread to be interrupted for processing just once, instead of several times. Reduces the load on the CPU.	Disable - the function is disabled. Enable - control is enabled. stream.
IPv4 Checksum Offload -IPv4 Offload Checksum	If this option is enabled, the adapter itself calculates the checksum of the file on send (Tx) and receive (Rx). Reduces the load on the CPU.	Disable - the function is disabled. Rx Enabled - the function is enabled for accepting files. Tx Enabled - the function is enabled for sending files. Rx & Tx Enabled - the function is enabled for sending and receiving files.
Jumbo Frame -Big frame	This setting increases the standard frame size of the transmitted data. Improves network performance when jumbo frames make up the bulk of traffic.	Disable - the function is disabled. Standard value. xKB MTU - the feature is enabled, where X is the jumbo frame length in KB.
Large Send Offload v2 (IPv4) -Offload on large send (IPv4)	Enables the data packet fragmentation feature. Fragmentation occurs at the expense of the adapter. The network performance is increased, the load on the CPU decreases.	Disable - the function is disabled.
Large Send Offload v2 (IPv6) -Offload on large send (IPv6)	Everything is the same, only for the IPv6 protocol.	Disable - the function is disabled. Enable - fragmentation is enabled.
Network Address -Network address	Allows you to change the virtual MAC address of the device, the hardware (physical) MAC address does not change.	None - the function is disabled. Value - you must enter the desired MAC address.
NS Offload -NS unloading	The function allows you not to enable the adapter to respond to NS request (Neighbor Discovery Protocol).	Disable - the function is disabled. Enable - the adapter is not enabled to respond to the request.
Priority & VLAN -Priority and VLAN	In addition to the basic information, it adds packet priority information and VLAN ID to the Ethernet frame.	Disable - Disables hardware VLAN tagging. Enable - Enables hardware VLAN tagging.
Receive Buffers -Receive buffers	This property sets the number of memory buffers when the adapter receives any information. Increasing the value increases the performance of the adapter, but also increases the consumption of system memory.	You can set values \u200b\u200bfrom 1 to ... (Depending on the adapter. I have up to 512).
Receive Side Scaling (RSS) -Getting side scaling	A load balancing mechanism where TCP packets can be distributed across multiple CPU cores.	Disable - Disables RSS. Enable - enables RSS.
Shutdown Wake-On-Lan (WOL) -Wake on LAN after disconnect	Enables or disables the function of turning on the computer over the network through the adapter.	Disable - disables WOL. Enable - enables WOL.
Speed \u200b\u200b& Duplex -Speed \u200b\u200band duplex	Allows you to set the desired connection speed and the mode of parallel reception / transmission of data. Duplex - the device simultaneously receives and transmits information. Half duplex - the device either transmits or receives information.	Auto Negotiation - auto-negotiation with a network device. 10 / 100Mbps / Half / Full Duplex, 1.0 Gbps / Full Duplex - Operating modes.
TCP Checksum Offload (IPv4) -TCP Offload Checksum (IPv4)		Disable - the function is disabled. Enable - fragmentation is enabled.
TCP Checksum Offload (IPv6) -TCP Offload Checksum (IPv6)	Allows the adapter to check the checksum for TCP packets. Improves network performance and reduces CPU utilization.	Disable - the function is disabled. Enable - fragmentation is enabled.
Transmit Buffers -Transfer buffers	This property specifies the number of memory buffers when the adapter transfers any information. Increasing the value increases the performance of the adapter, but also increases the consumption of system memory.	You can set values \u200b\u200bfrom 1 to ... (Depending on the adapter. I have up to 128).
UDP Checksum Offload (IPv4) -UDP Offload Checksum (IPv4)		Disable - the function is disabled. Enable - fragmentation is enabled.
UDP Checksum Offload (IPv6) -UDP Offload Checksum (IPv6)	Allows the adapter to check the checksum for UDP packets. Improves network performance and reduces CPU utilization.	Disable - the function is disabled. Enable - fragmentation is enabled.
Wake on magic packet		Disable - the function is disabled. Enable - the function is enabled.
Wake on pattern match	Additional Wake-On-Lan configuration	Disable - the function is disabled. Enable - the function is enabled.
WOL & Shutdown Link Speed \u200b\u200b-Wake-up speed over LAN after disconnect	Determines the initial connection speed for the Wake-On-Lan	10Mbps First, 100Mbps First - sets the initial speed to 10/100 Mbps

Do you have any questions? Do you want to supplement the article? Have you noticed a mistake? Let me know about it below, I will definitely hear you!

If this article helped you, then write about it in the comments. And don't forget to share the article with your friends in social networks;)

Before setting up your Wi-Fi router. You need to insist on the computer and check the type of Internet connection that your provider uses. Content:

Consider the windows XP operating system

To determine the type of Internet connection. (There are 3 types of them: PPPoE, Dynamic IP, Static IP).

Start → Control Panel (click "Switch to Classic View") → Network Connections. (fig. 1)

Further, if you see a window as in (Fig. 2), and where it says "the name of your provider" is the name of your provider. So you have a "PPPoE" connection type. You need a Login and Password. (Received from the provider). Let's start connecting a Wi-Fi router.

We define "Dynamic IP". After the action with "Fig. 1" right-click on the shortcut "Local Area Connection" and select "Properties" in the drop-down menu. In the window that appears, select the "Internet Protocols TCP / IP" protocol and press the "Properties" button - a new window will appear. If in the properties of "Internet protocols TCP / IP" there are dots opposite the inscription "Obtain an IP address automatically", then the connection protocol is DHCP (Dynamic IP). See "Fig.3". Let's start connecting a Wi-Fi router.

"Static IP" differs from "Dynamic IP" only in that in "Properties: Internet Protocols TCP / IP" there is a dot opposite "Use the following IP address", and in the cells opposite the inscriptions "IP address", "Subnet mask" and "Main gateway" numeric values \u200b\u200bare entered, connection type - Static IP (Static IP). Look (Fig. 4). We write out the numbers that are written in you, rearrange the dot on opposite the inscription "Obtain an IP address automatically" press "OK" in the window "Local area connection - properties" the same press "OK". Let's start connecting a Wi-Fi router.

Consider the windows 7 operating system

Start → Control Panel (select "Small Icons") → Network and Sharing Center. (fig. 5). Then select "Change adapter parameters" (Fig. 6)

Connection type "PPPoE". It is defined the same as on windows XP. Watch (fig. 7). You need a Login and Password. (Received from the provider). Let's start connecting a Wi-Fi router.

We define "Dynamic IP". After the action with "Fig.5.6" right-click on the shortcut "Local Area Connection" and select "Properties" in the drop-down menu. In the window that appears, select the "Internet Protocols Version 4 (TCP / IPv4)" protocol and click the "Properties" button - a new window will appear. If in the properties of "Internet protocols version 4 (TCP / IPv4)" there are dots opposite the inscription "Obtain an IP address automatically", then the connection protocol is DHCP (Dynamic IP). See "Fig.8". Let's start connecting a Wi-Fi router.

"Static IP" differs from "Dynamic IP" only in that in "Properties: Internet Protocols version 4 (TCP / IPv4)" there is a dot opposite "Use the following IP address", and in the cells opposite the inscriptions "IP address", "Subnet mask" and "Default gateway" entered numerical values, connection type - Static IP (Static IP). Look (Fig. 9). Write out those numbers that are written on your page, rearrange the dot on opposite the inscription "Obtain an IP address automatically" click "OK" in the window "Local Area Connection - Properties" the same click "OK". Let's start connecting a Wi-Fi router.

TvoiRouter.ru

Setting up a network connection in windows 7 / windows 8 | Your setevok

Often a situation arises when, when the router or modem is properly connected to the PC, there is no "windows 7 wireless network connection" icon in the lower corner of the computer monitor. And no matter how much the user switches wires, stubborn "network connections" never appear. In this case, it is necessary to postpone the "cable work" for a while and check (and possibly reinstall) the parameters of the LAN connection.

Configuring a windows 7 network connection

• 1. Click the left mouse button (then left all the time, unless otherwise indicated) the "Start" menu button.
• 2. Select the "Control Panel" icon.
• 3. In the "Control Panel" click "Network and Internet" - "View network status and tasks" (if you do not see - switch the view mode to the "Category" view).

4. Go to the "Change adapter settings" menu.

5. Right-click on the "Local Area Connection" icon, select "Properties" from the context menu.

6. Double click to open the "Internet Protocol Version 4 (TCP / IPv4)" properties.

7. Switch the first checkbox to the position: "Obtain an IP address automatically", the second to "Obtain DNS server address automatically".

8. If the checkboxes were already in the specified position, then change the first one to the position: "Use the next IP address".

Set the following values: "IP address": 192.168.1.2, "Subnet mask" 255.255.255.0, "Default gateway": 192.168.1.1; "Preferred DNS Server": 192.168.1.1.

Do not forget to press the "OK" button in all open windows after finishing the settings to save the settings.

Setting up a network connection in windows 8:

In general, setting the connection parameters here is similar to the previous version of the OS. The only caveat: many users do not know how to open network connections in windows 8. Therefore, at this stage we will dwell in more detail:

1. Right-click on the "Start" menu and select "All applications" in the menu that appears

2. In the "Applications" menu, click the "Control Panel" icon.

3. Click on the "Network and Internet" icon.

5. Find and click "Change adapter parameters" (top left).

Further configuration is carried out similarly to the "seven": follow steps 5 to 8 and check the network connection - the corresponding icon should appear in the lower corner of the monitor.

tvoi-setevichok.ru

2.In the window that appears, click on "Network and Internet"

3 In the window that appears, click on "Network and Sharing Center"

4 In the window that appears, click on "Local Area Connection"

5 In the dialog box that appears, left-click on the "Properties" button.

6 In the dialog box that appears, deselect the "Internet Protocol version 6" item, then select the "Internet Protocol version 4" item and left-click on the "Properties" button

6 In the IP address line, enter the value 192.168.1.2, in the Subnet mask line - the value 255.255.255.0, in the Default gateway line - the value 192.168.1.254 (for Billion modems), or 192.168.1.1 (for other modems)

7 Click close.

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Configuring a network card for windows 7

1. Click on "Start" and select "Control Panel":

2. In the window that appears, click on "Network and Internet"

3. In the window that appears, click on "Network and Sharing Center"

4. In the window that appears, click on "Local Area Connection"

5. In the dialog box that appears, left-click on the "Properties" button.

6. In the dialog box that appears, deselect the "Internet Protocol version 6" item, then select the "Internet Protocol version 4" item and left-click on the "Properties" button

7. In the IP address line, enter the value 192.168.1.2 (192.168.100.2 for the Promsvyaz MT-PON-AT-4 modem), in the Subnet mask line - the value 255.255.255.0, in the Primary gateway line - the value 192.168.1.254 (for modems Billion), 192.168.100.1 (for the Promsvyaz MT-PON-AT-4 modem), or 192.168.1.1 (for other modems)

Select Use the following DNS server addresses and enter the IP addresses of the primary and secondary DNS servers (see the Appendix "DNS Servers" for a list of their values)

8. Click close.

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Network card settings

Setting up a network card.

Usually modern network cards are configured automatically, but

if it suddenly happens that the network settings are lost or

has been rearranged windows you may need

configure the network card.

FOR WINDOWS XP 1. Go to Control Panel
with the classic start menu in standard view Start

in the first case, we immediately get into network connections, in the second case

you need to enter network connections

2. In network connections, find the connection you need and right-click on it,

in the menu that appears, click on "properties" with the left mouse button

3. Highlight Internet Protocol (TCP / IP) and click properties Attention The window Connect via should contain the name of your network card

4. In the appeared plate, put the checkboxes Use the following IP address and Use the following DNS server addresses

Instead of "x" in the field:

DNS servers.

Subnet mask 255.255.255.0

FOR WINDOWS 7

1. Open the "Start" menu with the left mouse button and select "Control Panel".

2. In the Network and Internet subsection, click View network status and tasks:
3. In the Network and Sharing Center that opens, click Change adapter setting:

4. In the Network Connections window, right-click on the local area connection and, in the menu that appears, select Properties:

5. In the dialog box, select Internet Protocol Version 4 (TCP / IPv4) and click the Properties button:

6. In the appeared plate, put the checkboxes Use the following IP address and Use the following DNS server addresses

and. IP address You need to dial the IP address given to you when you connect

b. The subnet mask is usually assigned automatically after

iP address will be entered, if this did not happen, enter

in. The main Gateway must be registered with the Gateway IP address issued

when connected or recorded by you earlier

d. Preferred DNS server, you need to enter the IP address

DNS servers.

e. the alternate DNS server should be left as it is.

Attention if you use a modem to access the Internet then usually on all modems the IP address is 192.168.1. Any number from 2 to 200)

Subnet mask 255.255.255.0

The main gateway is 192.168.1.1 --- the standard is the ip of the modem

dNS server addresses are issued by the provider (You can contact the provider's technical support service, they will tell you them)

WOO-a-la Your network card is configured

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Good afternoon friends! I am very pleased to welcome you to our training Internet portal https: // site. We continue to talk about setting up a home network. The topic is vast, but interesting and very important.

Today we will be engaged in a network educational program or network settings... In order to be able to set up a home network yourself, you need to get a minimum of ideas about how a local area network works.

We will talk about the terminology of local networks, about configuring network adapters, and also take a closer look at connecting two or more computers to a network.

Let's turn to the network connection settings:

1. For Windows XP: Go to “Start” -\u003e “Control Panel” -\u003e “Network Connections”. If the computer has a network card, the network connection icon will appear in the window that opens. Click on it with the right mouse button, and in the menu that opens, select "Properties".

2. For Windows 7: Go to the "Start" menu -\u003e "Control Panel" -\u003e "Network and Internet" -\u003e in the first item "Network and Sharing Center, select the sub-item" View network status and tasks "-\u003e click on the link “Local Area Connection” and then the button “Properties”.

In the window that appears, select “Internet Protocol (TCP / IP) (version 4, if specified)” in the list and click on the “Properties” button.

A window will open in which the main ones will be displayed.

adapter network settings

- a kind of formal designation of your computer in the global or local information space. Most likely, the network we are building will operate over TCP / IP (Transmission Control Protocol / Internet Protocol).

A protocol is a set of standard algorithms and rules according to which data is exchanged in a network.

As TCP / IP works, each network device is assigned a unique IP address. It consists of 32 bits (or 4 bytes), which are written as four decimal numbers in the range 0-255, separated by periods, for example: 192.168.0.10.

Note that addresses 0.0.0.0, 127.0.0.1 and addresses ending in 0 and 255 are reserved for service purposes and cannot be assigned to network devices.

When setting up an Internet connection, pay attention to the IP-address input field: if your provider has indicated an IP-address, then enter it in the appropriate field, if it was not provided to you, then simply select the “Obtain an IP-address automatically.

2. Subnet mask. As a rule, a large network is divided into subnets, each of which is assigned its own unique address, like a separate computer. The full IP address, which we considered above, contains information about both the address of a specific node and the subnet address.

To separate these sections from a single IP address, you need to know the subnet mask. It also consists of 32 bits and takes the value 0 or 1. If you impose a subnet mask on an IP address, then the numbers below the ones will mean the subnet address, and below the zeros - the address of a specific node. The subnet mask is written in the same way as an IP address, four digits separated by periods, for example: 255.255.255.0.

For reference, computers can only be connected to a network without a router if they are on the same subnet (or have the same subnet address). If the subnet addresses differ by at least one, then information between them will not be transmitted.

3. Types of IP addresses and default gateway. As you already understand, the number of unique IP addresses on the Internet is limited, and the number of computers wishing to access the World Wide Web is growing every day. The decision was made: to divide the addresses into private and public.

• Public IP addresses can be connected to the Internet directly. They are visible to every computer on the Internet. To get a public IP address, you need to pay money. The pleasure is not cheap. As a rule, such addresses are distributed to providers and dedicated servers, sometimes to clients.
• Private IP addresses are addresses that are not visible from the Internet. They are assigned to computers on subnets that are connected to the Internet through a router. A router is a device that connects two subnets: local and global (Internet), and therefore has at least two network ports (IP addresses): public (for connecting to the Internet) and private (for working within a local network). Because subnets do not interact with each other, then the same addresses can be repeated many times in different subnets.

It is best to use private IP addresses to create your home network. A common option is to use an address like 192.168.x.x, where x is a number from 0 to 254.

4. DNS servers. We've covered what an IP address is. But everyone will probably agree that memorizing so many numbers is difficult. Which is easier to remember 94.100.191.204 or mail.ru? Of course, it is easier to remember the alphabetic site address (domain name). To replace IP addresses with understandable nominal values, special servers - DNS servers - have been invented. If the IP address changes, then this is immediately reported to the DNS server, and for you access to the site remains under the same domain name.

To configure access to the Internet, you must specify the IP address of the DNS server (usually it is given by the provider or it is assigned automatically). If this is not done (or the DNS server stops working), then you will have to specify their IP addresses to access the sites.

home network for two

If you need to quickly connect two computers to a network (for example, to transfer information, create a backup copy, or just to play), then it is not at all necessary to buy a router or switch. We'll consider two connection options:

I will not consider configuration over wireless access in this article. We will dwell on this option later, when considering the router settings.

After choosing the type of cable connection, you can go to the settings of network adapters.

First, make sure that the computers are in the same workgroup, in the same address range, and with different network names. Let's see how this is done:

Next, you need to set the IP addresses and subnet mask (the subnet mask is automatically substituted for the specified IP address) for each computer. How to choose IP addresses, we discussed above. Let's see how the IP address is configured:

If you connect several computers to the network using a switch (network switch), then repeat the above settings on each computer in the network.

network troubleshooting

1. The first thing to look for when troubleshooting a network is whether a network connection is established. Those. whether there is a physical connection of computers (whether network cables are connected to network adapters and network devices such as a router, whether the wireless Wi-Fi adapter is enabled, for example, on laptops it is disabled by a special keyboard shortcut). It is immediately necessary to determine the health of the network adapter. As a rule, for this sometimes it is enough to see if the yellow-orange diodes of the network connector blink when the cable is connected.

2. It is necessary to check that the IP addresses are not duplicated in the given subnet. All computers must have different addresses to avoid conflicts when exchanging data.

3. Make sure the subnet address is correct. Those. it is necessary to check that the subnet mask is set to the same on all network adapters.

4. Check that the same group is specified in the computer properties (we talked about this above).

5. If a specific site has become unavailable, then this does not mean that the network has disappeared, perhaps the DNS server has failed. Check out other sites. To control the operation of the DNS server, enter 94.100.191.204 instead of mail.ru into the address bar of the browser. If the site loads, then the DNS is definitely faulty.

Windows 7 supports the vast majority of network cards. Moreover, the majority of modern network equipment is sharpened specifically for Windows, with all the resulting problems, because Windows is not famous for its stability. However, Microsoft quickly solves most of the problems that arise with network equipment, honor and praise them, but those that inevitably arise will be discussed in detail in this article.

First of all: in order to expand the potential range of tasks that a client computer performs on the network, there is a need to change the basic parameters of the network card.

Here are examples of such tasks:

How can I see the list of available network adapters (network connections) in Windows 7?

The list of available devices on Windows 7 can be seen in two ways:

The second method starts by opening the "Device Manager" using the "Run" window:

Enabling the network card, including using the BIOS

Read the instructions for all BIOS versions in the article -

On laptops, the network interface is turned on and off by pressing a key combination, on desktop computers, through the BIOS menu.

To enable the wireless network adapter on laptops, there is a combination "Fn + F12", although some manufacturers make a special key for this function.

Installing a network driver on Windows 7, including without the Internet

Since the network adapter is equivalent to the Internet, its absence makes it very difficult to download the driver to the network card. The issue is solved by pre-recording drivers on the media.

1. Drivers are downloaded and written to a flash drive, CD, etc.
2. The media is connected to the PC.
3. After that, the "Device Manager" opens, using the "Run" window (called by pressing the "Win + R" keys), in which the command "devmgmt.msc" is entered.

   

4. There is a section "Sound, game and video devices", subsection "Unknown device", which is not yet installed. The installation of drivers for an unknown device (future network adapter) must be started after selecting it with the right mouse button and selecting the Properties drop-down menu.

   

5. Left-click - "Update".

   

6. Manual installation is selected.

   

7. The path to the media with drivers is registered or indicated.

   

8. Finally, the installation begins. It takes no more than a couple of minutes.

The network card without drivers in the "Device Manager" was in the "Unknown devices" section. After the update, it takes its rightful place - in "Network adapters".

Video - How to install a network adapter driver without Internet access

Setting up a network connection in Windows 7

Although Internet service companies prefer to configure their customers' network equipment themselves, sometimes more advanced configuration is required. This is typical for computers with multiple adapters.

For this:

1. Go to the "Start" context menu, open the "Control Panel".

   

2. In the "View" category, set the value "Category", find and open the "Network and Internet" section.

   

3. Click on the "Network and Sharing Center" link.

   

4. Click on the "Change adapter settings" link.

   

5. Right-click on the network connection shortcut, select Properties.

   

6. Check the box "Internet Protocol Version 4 (TCP / IPv4)", click on the "Properties" button.

   

7. Check the box "Use the following IP address", fill in the fields with data.

   

   On a note! The fields and "Default gateway" are in the agreement with the Internet provider, the rest of the fields contain the same values \u200b\u200bfor all users.

Video - The computer does not see the network adapter

How to view and change the parameters of a network card (IP, Mac, etc.) in Windows 7?

It is easy to see the adapter parameters and its MAC address thanks to the system programs.

For this:

How do I reset all network driver settings?

If you want to completely roll back all the settings to the original level, then do the following:

Can I create two NICs?

Many users are thinking about getting a second network card. Physically, there are no problems here: most laptops and computers support a second network card. But there are exceptions, as well as damaged slots, as well as netbooks and tablet computers. In this situation, you need to use a virtual card that distributes Internet traffic no worse than a physical one.

The ability to install such a virtual card is in the Windows system itself:

1. In the "Start" menu in the field, type "manager", open "Device Manager".

   

2. In the "Device Manager" click on the "Network adapters" section, select "Actions" from the top menu, and "Install old device" from the drop-down menu.

   

3. The installation wizard will open. You need to select the manual option to access the list of drivers for all devices.

   

4. Scroll through the categories, highlight Network Adapters, click Next.

   

5. Then click on "Micrsoft" and add "Micrsoft loopback adapter" or "Microsoft loopback adapter" which will then appear in the network connections window.

   

   

6. Please confirm. The network adapter should now appear in "Network Connections".

   

   

Full reset of network drivers

If your Internet connection is down or most of the Internet pages won't open, then resetting all parameters and the TCP / IP stack can be an excellent solution to this problem.

Disconnecting the network card

To disable the network adapter, the best tool is to use the most standard and convenient Windows tool for keeping all such hardware - Device Manager. Do the following:

In this case, the shutdown will occur immediately, you will not even need to reboot the OS.

Important! After the adapter is disconnected, the Internet connection will be interrupted along with it and disconnection from the local network will occur. Therefore, it is recommended that you finish all your online business in a timely manner before disconnecting the network card.

The network adapter does not have valid IP settings

A common problem for Windows 7 users is when problems with Internet access appear and the network diagnostic tool gives a message that the network adapter does not have valid IP settings.

In this case, you can try resetting your router first. If you have a wired connection, disable and then re-enable your network connection in the network connections menu. If this does not help, then you can proceed to further steps.

Step 1. Renewing your IP address is the easiest method, although not always helpful in this case. To do this, open Command Prompt (as administrator) and enter the following commands:

Check again, is the error still displayed? If so, let's move on.

Step 2. You can try to reset the network settings, namely the IP protocols. It is recommended to reset the TCP / IP protocol stack to factory settings in the most severe cases, when problems are caused by the actions of malware, etc. To do this, open the command line in administrator mode and enter:

Network card settings fly off

When setting up a network, users may face the following situation: when the IP address, gateway, DNS are manually registered - the assigned parameters are not saved, but are reset to the factory settings, and thus it becomes impossible to change the network settings from automatically obtaining addresses from the router. One of the common reasons for this is the incorrect removal of an antivirus that has firewall functions.

What should be done:

1. Reset the TCP / IP protocol stack to factory defaults (the article above showed you how to do this).
2. Reboot.

If that doesn't help, then do the following:

After that, the problem should be resolved.

What if there are problems with the network card?

Many plug-in network adapters, due to their vulnerability to electricity, can fail for a while during periods of severe thunderstorms, or power outages in a building. In most cases, difficulties arise in situations with wired equipment, since multi-storey buildings have long cable routes, laid by Internet providers in not completely intended places, next to telephone and television cables and high voltage wires. High humidity, dampness and low temperature in this area - all this has an extremely negative effect on the insulation of the wires, therefore breakdowns appear in them .

Sometimes also, in more rare cases, breakdowns occur due to emergencies such as a major thunderstorm. It is quite common for network adapters to burn out, or users begin to experience difficulty logging into the network. In this case, the equipment will function, but the Internet connection may not be available during such periods.

Unfortunately, this problem can be solved only by purchasing another model of the network adapter. For a desktop computer it is PCI compliant, for a laptop it is USB and PCMCIA

It is also not recommended to plug the network cable into the router, and then connect the computer to it, because even if the router breaks down, replacing it will be relatively inexpensive compared to replacing the network card built into the computer (or even the entire motherboard).

Windows 7 does not see the network adapter

When the integrated network equipment is not shown either in the "Network Connections" window, or in the "Device Manager", and is not even reflected in the "Unknown devices" section (which would be explained by the lack of drivers), then most likely something is wrong with it physically. It is quite possible that some transistors on the network card have burned out, or a chip flew off - in this case, it is more expedient to buy a new card.

Video - How to set up a wired network card on Windows 7

A network card or network adapter is required to create a local area 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 working incorrectly, but you can restore it yourself using standard Windows 7 tools.

When to manually configure the adapter

You need to update drivers or change the settings of the card if you have problems with raising the local network or connecting to the Internet. Please note that the appearance of such problems is not always caused by the network adapter, but sometimes it is precisely 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 to check if the card is connected to the computer and recognized by it. The adapter is included with all laptops and computers by default, so if you did not assemble your device in parts yourself, you should not think about its absence. But there are times when the wires going to it disconnect or go away.

A network card (or network adapter) is a device that enables 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 it only if the network card is not displayed in the "Device Manager":

Card activation

If the network card is connected but not in use, it must be turned on manually. This can be done in several ways. If the card is not damaged, then the inclusion will not cause errors.

Through the "Device Manager"

The previous section described how to view the card model through the "Device Manager". Find the required adapter and, by right-clicking on it, select the "Activate" function. If the card is turned on successfully, the down arrow icon will disappear from its icon.

Click on the "Activate" 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. Navigate to "Network and Sharing Center".
   Go to the "Network and Sharing Center"
3. Click on the "Change adapter parameters" sub-item.
   Click on the sub-item "Change adapter parameters"
4. A list will open, which, most likely, will contain several cards. One serves as a connection to a wireless network and the other to a wireless network. Additional adapters may be listed. Select the one you need and by clicking on it with the right mouse button, select the "Enable" function. Wait for the activation to end: the red cross icon on the map icon should disappear.
   Click on the "Enable" button to activate the adapter

Via BIOS

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

1. The BIOS is entered 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 stated in the hint that appears in one of the corners of the screen at the stage of the logo appearance. If you find out the model of your motherboard, you can find on the Internet the button responsible for entering the BIOS.
   Enter BIOS by pressing the Delete key
2. The design and location of items and sections of the BIOS may differ depending on its version and model of the motherboard, but the following procedure is approximately the same for all versions. Go to the "Advanced" tab.
   Open the "Advanced" tab
3. Go to the subsection "Onboard Devices Configuration".
   Open the subsection "Onboard Devices Configuration"
4. To enable the card, set the value “Enabled” in the line “Onboard Lan”. Disabled means the card is disabled.
   We set the parameter "Enabled" for the line "Onboard Lan"

Video: how to enable the network card in Windows 7

You can disconnect an extra card in the same ways that you allowed it to be turned on: 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" 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 required so that the card does not conflict with other components and fully performs all its functions. They are usually installed automatically the first time you plug in the computer adapter, but sometimes the drivers crash 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 is not working. But if you have the ability to connect to the network, then 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 your own and install. It is recommended to download the card drivers strictly from the official website of the company that created it.

What to do if the drivers won't install

If at any of the stages errors occur that prevent the installation of drivers, you must remove the adapter from the "Device Manager" and restart the computer.

Removing the card from the "Task Manager"

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

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

Video: how to update a 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 way

You can also find out the parameters of the card through the "Command line" using the "ipconfig / all" command. The "Command Line" can be found by going to "Start" - "Accessories" - "Command Line". Executing this command brings up information about all physical and virtual adapters recognized by the computer.

We execute the command "ipconfig / all" to get information

How to change map parameters

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

Video: how to set up a network card

Network card update

The only way to update the network card is to install more recent drivers on it, in which the developers have fixed some of the mistakes made earlier. Installation of new drivers is performed directly over the already installed ones. If you cannot install over it, then 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 offload each other, if one of them is aimed at working with Internet traffic, and the second - at working with a local network. To do this, you need to correctly set the IP, DNS and router parameters for both adapters.

Reset adapter settings

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 slow 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 internet problems.

Standard method

Start 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 reset the settings to the factory settings. Done, the registry branches and system files will see the changes, you may need to restart your computer.

We 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 Microsoft's NetShell program, which does not require installation, from their official website. After launching it, follow the instructions on the screen to reset all changed settings.

Download the program to automatically reset the map settings

Resolving Adapter Errors

During the configuration or use of the adapter, the following errors may occur, which will prevent the use of the Internet or local network. Most of them can be eliminated without replacing the card.

Card does not have valid IP settings

A similar error can be encountered when setting IP parameters or scanning a network module using standard Windows tools designed to automatically eliminate errors.

Getting settings manually

If you have not changed the parameters of the adapter, that is, it obtains an IP address automatically, then a manual request to obtain an IP can fix the problem:

Reset

Resetting the settings to their default values \u200b\u200bis the most reliable way. How to do this in several ways is described in the "Reset adapter settings" section.

Manual adapter setting

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

Error "This device cannot be started"

This error occurs 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, is not installed or is not displayed, then the reasons may be the following:

Changed map settings fly off

If, after you close the window with the changed settings or restart the computer, all the changes you have made fly off as if you hadn’t made them, then there are two ways to solve this problem: set the settings by running commands and change the incorrect values \u200b\u200bin the registry.

Making changes through the "Command line"

Run "Command Prompt" with administrator rights and sequentially run 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 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 parameters. Remember to make sure the use of the network card is enabled in the BIOS.