Windows 7 WIFI networks are not displayed. Why laptop stopped seeing Wi-Fi network

When a PC at home ceases to see the Wi-Fi network, many immediately begin to call the service provider and are waiting for them to consult, or until a specialist comes to the house. Nevertheless, it is often possible to solve the problem with the lack of network: it will be easier, faster, and in some cases - also cheaper.

So why doesn't your computer or laptop sees the network? The main reasons are only three - the problem can be in a computer, in a Wi-Fi router or in drivers. Consider them in more detail.

PC or laptop does not see Wi-Fi: Causes

In some cases, a PC or laptop may not see the network due to the fact that the connection is flown. On the keyboard (or enclosures) of many laptops there is a special button that includes and turning off Wi-Fi. If you accidentally pressed on it, you could disable access to the network and not to notice it. In this case, simply turn on the button.

If the buttons are not, look at the Wi-Fi Connection Designation icon located on the Start panel near time. In the event that the icon is missing, go to the Windows settings and find the "Network and Shared Access Center" there. Select there an item called "Changing the Adapter Settings" and make sure that the wireless network connection is turned on. If not - turn it on.

Router or access point does not work

Sometimes it also happens that the Wi-Fi connection for one reason or another is disconnected on the router itself. To begin with, inspect its enclosure and make sure that the wireless network indicator is glowing.

If not, turn on the wireless connection. You can do this either directly on the housing (in a number of models), or in the device settings. In order to enter the settings, open any internet browser and type the IP address of the modem (the combination of numbers that is listed on its back side). After that, open the advanced settings, select the "Wi-Fi" option and turn it on. Save the changes and reboot the modem.

Problem with drivers

In rare cases, it happens that in order for the Internet to work, you need to update the drivers or install new ones. Most often it happens after installing a new operating system or inappropriate drivers. In this case, simply reinstall them using the discs provided to you along with the equipment, or by downloading drivers from the network card site or laptop.

After working on the long month and even years on the network from one router, one day the user will notice that the connection via Wi-Fi or the cable suddenly lost. But any problem, except, perhaps, breakdowns from the provider, solved one-way, on their own.

PC or laptop not "sees" the router - what is the reason

Physical reasons include the following.

Sample LAN-interface with high voltage (for example, lightning over the "twisted pair" cable passing over the roofs of private houses). This also includes static electricity when servicing LAN / ONT equipment (random touch of electrical clothing of conclusions and cereal wires of repaired cables).
Power supply for power supply (using an adapter with a much higher output voltage, for example, from a laptop). At best, this will cause the bulk of the voltage stabilizer, from which the power of the all remaining functional nodes of the router is obtained. In the cheapest models of routers, the whole board can burn - such a router immediately change.
Wireless failure in the router due to overheating of the Wi-Fi radiosystem chip or processor on the router monoplace.
A nutritional shortage ("requested" power supply when using a self-made or industrial redundant power system, for example, several PowerBank type devices connected by output voltage sequentially before obtaining the desired supply voltage). No power (planned power outages, not inserted into the outlet of the adapter plug, the adapter itself fell).
Internal closures or wear when working in conditions of high humidity and extreme temperature fluctuations.
Damage to the LAN cables (if the local network connection is used according to the cable), discharged and curved conclusions of the LAN noddes in the router and in the PC / laptop network card.

The following reasons are the following.

The hanging of the router due to overheating caused by work in extremely hot conditions. The cause of the router flash memory and other chips after intensive many years of work may also be the reason.
Figure malicious code on the LAN-connections or via Wi-Fi with a PC changing settings. Here only reinstalling the version of Windows on a PC or tablet, from which the virus is penetrated into the router firmware, and reflashing the router itself with re-setting it.
Viral activity in the PCs / Laptop / Tablet / Smartphone, which is able to seriously disrupt Windows / Android. OS in this case is reinstalled "from scratch".
The abundance of the programs used at the same time, stamped the work of the PC / Gadget.

In the last two cases, the network configuration management is lost due to speed.

Checking the integrity and correctness of the connection of LAN cables

Most routers, for example, TP-LINK devices, have up to several LAN ports and one WAN port ("provider" input). There are two schemes for organizing a small local network with common Internet access.

What scheme you would choose the network cables should be connected correctly. If something is confused - plug cables according to one of these schemes and adjust the router under its features.

Pay attention to the integrity of the cable crimping in the RJ-45 connector.

Do not cut the shell outside the confutor retainer

Perhaps one of the wires was lagging behind - it is fraught with Windows messages about errors ("Limited access", endless "identification" or "Unidentified Network" - Even if the settings are right throughout and the router with a modem / terminal is 100% limited).

Restarting Windows and Router

The router is restarted using the POWER button on the rear panel. But you can also turn off and turn on the power adapter.

Turn off and turn on the router with successive button presses

Using the web interface, TP-LINK routers, for example, restart on the "System Tools - Reboot" command.

Restart from the web interface is available in the presence of communication on LAN or Wi-Fi

Windows 10 is restarted by the "Start - Reboot" command.

Team to restart PC

Restarting equipment love to advise first of all operators of the Call Center of Providers - but often the problem is still not in random failures when working solved by reboot.

Wi-Fi Connection Check on Router

In routers, except LAN and Wi-Fi, for local communication, nothing new is invented.

Other varieties - an IR-port or Bluetooth connection - inherent in the first place mobile devices in which the USB modem mode and the virtual access point are implemented.

If the Wi-Fi wireless network is not visible on a PC or laptop - try to connect to it using Android gadget. Wi-Fi solutions are as follows.

Check Ethernet ports and cables on a PC and ROUTER

If the PC does not occur on the PC, check if the router is visible from other PCs and laptops (if available).

If the connection is successful - check if the LAN adapter is enabled on this PC, as well as negotiate the configuration of its connection with the router settings on the router itself.
Wi-Fi settings must be consistent with DHCP router
In the absence of a connection, check the PC to viruses and other malicious applications.
Check the integrity of the cable, connectors and the serviceability of the LAN network card - when the connection is running, they must blink with green and yellow LEDs located in the LAN nest on the PC.
Connect the cable from this computer to another LAN connector on the router - when the connections running the LAN jack should also be lit on the router itself, and the corresponding LAN operation indicator (LAN-1 ... LAN-4) must be lit on the display pane.
Zyxel router shows that LAN ports in it and on available PCs work
If the check revealed a faulty LAN-jack on the router (on all PCs and laptops, the connection via the cable does not work) - for example, the LAN-connector contacts are brought down or "clogged", then use the other LAN socket. If one of the computers, due to the failure of one of the LAN ports, to which he used to be connected, remained "not to cases" - acquire the simplest LAN-Svitch (or LAN-HUB), CAT-5E cable segment and additional connectors , Connect the Hub near the router using additional short cables, and connect it to it and this PC, and its neighbor.
The number of LAN connections may be unlimited
In the event of a static discharge in the LAN-Schitch, the router often cease to operate all LAN-nest. In this case, use the connection of all PCs by Wi-Fi. When malfunction and Wi-Fi module (burned out all the router fee), replace the router itself.

Video: How to use Wi-Fi access point if Wan port burned

Replacing network cables

Depending on where and which cable "interrupts", the appropriate repair of the damaged line is needed.

"Witty pair" with the simplest cliff can be fixed, restoring the interweaving of the wires (for example, a step of a "orange" pair is different from the step "green" or "blue") as much as possible as if the cable was damaged.

Changing the step of turns of pairs in the place of the cliff will reduce the line speed

In this case, there is a chance that the speed of 100 Mbit / s will not turn into a 10-megabit - if it is very important for you, for example, you use not only the Internet, but also you often send a multifabital files between PCs and gadgets on your local network, print Widescreen cards and high-resolution drawings, etc.

If the cable is spoiled so much that its use is impossible (the shell is impaired, the insulation of individual wires crashed from old age and extreme temperatures is impaired, couples are impaired in many places) - a new cable is required. Either, if the "forward" of the new cable is impossible (no conditions, the work is prohibited, etc.), and the locations of the damage of all one or two are used special LAN-adapters and the simplest switches on 3 LAN-nests.

LAN splitters will help both where the network cable is torn off

Cables are especially often breaking and cracking, in which it is used as a conductive medium not pure copper, but copper aluminum, cable shell and insulation of wires - not polyethylene or PVC, but from plastic with chalk.

The best CAT-5E cable Sweet from completely copper wires, and each wire is a cable from the thinnest "lived", often with a lavsan filler; Insulation and cable shell are made of heat-resistant plastic. Such a cable is used for street gasket, it is resistant to repeated bearing, overheating and supercooling, will last for many years - but it costs 2-3 times more expensive. If you are accustomed to invested in high-quality equipment and lines, creating a network for many years - use the best.

If you enhance the LAN connectors and solder the torn "vituy couple" is not worth it - the repair / replacement of optical cables to trust the specialists of your provider. Wholesale fiber is not a copper wire: the slightest error in the inexperience will turn your 300-megabit connection from the "Rostelecom" or "Dom.ru" into a slow-speed connection, where even the browser pages will be opened barely, as the 3G peak overloaded - Sweets. Even if you have a special soldering iron for the splicing of Optic lived Volps - I need a snarling.

Use other routers

If you have a router of another brand (when you changed it to the current, now failed) - Connect it. In users, part-time computer service, most likely, the equipment written off once, which they use to diagnose the failed routers and network cards that have been brought to repair their customers.

You can buy a used router or access point (outdated for several years model), if you do not want to spend money on a new device. It connects and configures it as well as your former device. Frequently outdated models may not have a WAN interface (and related settings), as well as operating modes in the mode of the bridge and repeater (simple Wi-Fi access point with the LAN router without numerous settings), so it is used as the simplest LAN switch. Connect your LAN cables in the same sequence, perform the settings available on the device and exit the network.

Reset the router to factory settings

As an example - TP-LINK routers. Everything is simple.

Router will restart. A minute later Wi-Fi network will be with default settings.

If the router failed to reset (hang, unavailability) - use the reset button (it is protected by a tiny hole from accidentally pressing).

Video: How to configure TP-LINK router after resetting settings

Any hardware and software problems in the home or office network, including failures in the router and on any of the internal lines, are solved. Otherwise, network equipment itself changes, up to network cards and adapters. Excellent speed you - and efficient work!

Sometimes laptop users face that the technique ceases to see the Wi-Fi network. This problem may have several reasons. They lick either in the device itself, or in the router.

Learn whether there are no problems with the router

First of all, you need to check if there is no problem in the router. To do this, you will need an additional device, such as a smartphone. Try to find with it. If the technique connects to Wi-Fi and goes into the Internet without any problems, then the problem is exclusively in the computer. If other devices also do not see the network, you need to repair the router. There are several ways.

Reboot

Turn off and turn on the router using a button usually located on the back of the case. This will restart all the processes performed by him. After it boosts again, try to find a network.

By clicking on the button located on the back of the housing, you can restart the router

Reset parameters

Perhaps the settings of the router for some reason have come down. The easiest way to restore them is to reset the parameters before the default values. To do this, hold the RESET button on the rear panel of the router for 10-15 seconds. When the icons start blinking, the router will reboot. The button can be released - the settings are reset. Check again, whether the network has earned.

Pressing the RESET button will reset the router settings

Repeated

After resetting the settings, all parameters must be renovated:

Also try to connect the LAN cable or modem directly to the computer, thereby checking whether it works or not. Maybe the Internet is not paid or there are malfunctions on the side of the operator. If so, then the problem must be solved not with a computer or router.

Channel change

If at home there are several devices connected to the Wi-Fi network, it is possible that their frequencies intersect together. Therefore, it is worth trying to change the settings. Go to Wireless Setting and set a new value for the Channel parameter.

Set another value for the Channel parameter so that there is no conflict in the network

Solving problems with laptop

If the problem with the network occurs solely on the laptop, then it is necessary to check if the Wi-Fi adapter is activated and are the necessary drivers installed.

Note if you do not have a Wi-Fi settings partition, it may say that this module is not included in your laptop package and it is not capable of receiving a wireless signal. In this case, you will have to acquire an external receiving device separately.

Activation of the module

Perhaps the adapter responsible for working with Wi-Fi is deactivated. There are several ways to turn it on. See whether there is a special button with a signal icon on the laptop housing. Just click on it to actuate the module. Also inspect the F1-F12 keys, one of them must include and disable the adapter. Often the default combination Fn + F5 is used.

Photo Gallery: Module Activation By Buttons

To enable a Wi-Fi adapter, try pressing the FN + F5 combination The wi-fi-fi adapter button may be on the laptop keypad. Turn on the Wi-Fi module on some laptops using a button on the housing

Activation of Windows Module

Also, the module can be enabled through the system parameters:

After that, try to connect to the network.

Check drivers

For proper operation of computer components, drivers are needed. Initially, they are installed automatically, but over time they can stop being relevant, so it is necessary to set them again manually:

Expand Device Manager. You can find it using a system search string.
You can find device dispatch options using a search string.
A list of all devices connected to the computer will appear. Find a wireless adapter (if there are several of them, follow the actions described below for each), select it and proceed to updating the drivers.
Select the adapter and click the Update Drivers button
By the name of the adapter, find the latest version of the drivers for him on the Internet. It is recommended to download drivers only from the official site of the manufacturer.
Drivers are safer thank you on the website of the manufacturer of the router
By downloading drivers to the computer's memory, return to the installation procedure and select Manual Search.
Select the option "Perform the search for drivers on this computer"
Specify the path to the previously loaded file and wait until the installation is completed. Then restart the computer to change the changes to take effect, and check whether Wi-Fi has earned.
Specify the path to the driver file.

Video: What to do if the laptop does not see Wi-Fi

What to do if nothing helped

If you have completed all the actions described above, but the Internet does not appear, one option remains - a broken Wi-Fi module. It will not work independently, you will have to contact the service center so that experts take up. If the warranty period has not yet expired, the help will be provided for free.

Thus, the laptop may not connect to the network for two reasons: the router functions incorrectly or the Wi-Fi module does not work. To fix the router, you need to restart or reset its settings. To make a module, you need to enable it and install drivers.

The computer does not see the router - the first thing we look at the cable. Need a full patch cord. Twisted pairs of crossover receptions are crossed. Today it is difficult to meet the wrong option. However, there were times to influx those who want to connect 2 PCs directly. Here appears the factor of the features of the Ethernet ports of the router and the computer - mirroredly reflected ...

Curious cases happened: Ping passes, the PC does not see the network. Early versions of Microsoft operating systems (XP, 7) constantly had to reboot. Windows 10 is deprived of the specified shortage. Open, by the way, command line, type Ping 192.168.0.1 (the number of the IP address of the router, sometimes the values \u200b\u200bare different: 192.168.1.1, 192.168.10.1 ...).

Perfect option

Try to attach another device. There was ASUS, became ZyXEL. Quickly localize the fault source:

Cord.
Router.
External reasons (Hacker attack, hacking attempt).

Change cable

Immediately change the cable. The problem is in the wire. Broke around, or the patch is wrong, incomplete. Release cables where only part of clamping pins is present. Early network protocols sometimes allowed stunning liberties. The system is fully operational, but reverse compatibility is lost.

Take a good cable.
Connect.

Sees the network, however, is the administrator panel address not available? Two options:

Someone replaced the IP address of the hardware setup of the equipment. Then through Wi-Fi, the combination of numbers is also unavailable. Using wireless communication, check the current IP address value.
There is a hacker attack. Relieve the cord, reboot.

Reboot equipment

Routers sometimes hang. Sometimes it works on Wi-Fi. The reason is the same. Internet daily swallows hackers. Probably TP-LINK, or a laptop through the cable was attacked. Even if the performance is restored, it is recommended to perform a hardware reset of the device. Then check "Dr. Web smoking".

Antivirus

Premix hardware reset, download the antivirus.

Open search engine.
Type "Dr. Web smoking".
Swing a utility.
Turn off the cable.
Run the check.
Destroy the threats found.

Consider a typical example. F1comP Forum User Complains: The TP-LINK router, the laptop is perfectly working (including Wi-Fi, Ethernet), the connected PC receives the IP address of the form of 169.154.x.x, refuses to recognize the equipment. Typical case of infection. Immediately download the antivirus in any way, make a hardware reset, be treated, set up again. The problem is exacerbated by a slow reaction of antivirus manufacturers. Fresh infection is almost invulnerable, consult an example of the Red October.

Hardware reset

Inspect the router housing, looking for a recessed miniature (2-4 mm diameter), the button designated by the Reset signature.
Take the rod of the ballpoint handle, or the stationery clip.
Shuffle inside, holding the key pressed 3-5 seconds.
Check the connection.

If the router is still not determined on the computer, perform WAN settings by Wi-Fi. High probability of cable malfunction.

After performing hardware reset, make a re-configuration of the equipment.

Unsuccessful update

Forum users described an unusual case. The admin panel asked to update the firmware. The user agreed. However, it was impatient. Charter wait, user turned off the power.

After loading it turned out: the wired interface is not available. Although the WIFI is maintained by the panel. Excellent example of irretrievable damage equipment. Why irrevocable? Router manufacturers prohibit updates "by air". Since the cable stopped working, further actions become mysteriously unpredictable.

It is interesting! Operating systems windows are often broken, try to hurry, turning off the power. Nonsense. The first PCs rebooted easily. Consider a gift of the router manufacturers to the next patient training workout.

Unlikely reasons

In our memory, D-Link stubbornly refuses to break. Computers are also very reliable. However, there are authors, arguing: iron stuck!

LAN card.
Motherboard.
Brain ... pc.

The probability is extremely low. The craftsmen, however, are supplied by another advice ... Check drivers. The opportunity to boost the Internet while simultaneously refusing exactly the router Rostelecom to come into contact makes such arguments with ridiculous. Recall the location of the device dispatcher:

Win + R (launch Run tool).

Select an Ethernet network card, right-click, select Refresh Drivers.

Here we are trying to answer the question why the computer does not see the router, even if everything was connected, as it should. Usually, the following is advised: to reset the settings, click "F5" to update the page in the browser, just wait. We will not consider these well-known things. There are situations in which the router really cannot communicate with one of the PCs on the network, but the main thing is that the PC itself and the router are fully working. You do not know what it is about - read on.

Cloning Mac, Archer C-8

Suppose we have one computer and a router with gigabit LAN ports. Then, as soon as you clon the Mac address in the web interface, the connection between the router and the PC will be lost (and completely). Such is the feature of gigabit routers - they cannot work with the subscriber PC if the MAC address was cloned from this computer. You have to reset or replace the network card or its Mac. How to last last, consider right now.

Manage MAC addresses of computers

Suppose we need to change the MAC address of the wired network card. No programs for this are needed, you can do without Windows. The sequence of actions will be the same for XP, and for Win 7:

Right-click on the connection icon in the tray
Select the Status string, then click the "Properties" button
In the window that opens, we need the "Set up" button (immediately press it).

Access to network card settings

A set of tabs will open, where you will pass to the "Advanced" tab and select the Network Address property:

Change Mac Network Card

As you can see, now there is no meaning, but you can set it, then install the selector in the upper circle and click "OK"

The question is what exactly needs to be asked here. First, find out what the Mac value was equal to the default.

Close the window displayed at the moment (press the cross). Where we pressed the "Properties" button, click on the "Details" button (true for Windows 7 users):

How to watch the current address

The "Physical Address" line displays the desired value, write it down on the leaf. In Win XP, we would need to switch the tab ("General", you need "support") and click the "Details" button. In general, it will be necessary to set another sequence similar to the value used, but differing from it with one digit. Successful setting!

Suppose that I tried everything, the user comes to the conclusion that the router is faulty.

In fact, you do not need to hurry with such conclusions. Maybe the problem is in the PC network interface, in a faulty signal cord, etc. This cord, the so-called patch cord, pays surprises. Even when the LAN light burns on the router (including opposite the port used), this does not mean that patch cord is working. Try to ring the contacts on the plugs with an ohmmeter, or simply replace the patch cord.

Windows prevents incomprehensible surprises

It will be how you guess, that's what: the computer cannot establish a connection with the router thanks to the operating system. It happens that it is useless to set the value of the IP and DNS explicitly - at least with fixed values, even with the "Auto" settings, the interface cannot be opened.

Customize PC: IP address, DNS

According to reviews, in these cases, it helps to reinstall Windows, after execution, everything starts to work immediately. Experts, however, recommend to try to reinstall the network card driver. This is done so.

First of all, you must make sure that the driver can be re-installed after removal. It may be necessary to have an installation disk (or download the driver from the Internet). The name of the device, more precisely, the name of the chip, you will see if you open the Device Manager. Sequence of steps to execute this: "Control Panel" -\u003e System -\u003e Equipment Tab -\u003e Device Manager Button.

All devices present now

Well, to remove the driver, do everything that contains steps 1-3 from the previous chapter. Then go to the "Driver" tab, and click the "Delete" button (it is the latest). We wish you success.

We bring the router from the stupor

If everything is fine with the computer and patch cord, you can try to "suffer" the router itself. Perhaps this device is now in the firmware recovery mode. Such a mode can be used either by the user itself, or automatically (in the event of damage to the built-in software). How to find out if the router really is in recovery mode? Now we will answer this question.

Any D-Link device that is not equipped with the ADSL module, in recovery mode always remains available at this address: 192.168.0.1. But as a result of the fact that the DHCP server does not work in this mode, the PC does not receive IP automatically. So put IP "192.168.0.2", a mask with the last "0" and go to the web interface. The browser will have to open the recovery page:

Firmware Restore Page, D-Link

All "Asusov" have symptoms in non-standard mode will be others. First, you will notice that even after loading the AIR indicator does not burn, and the "POWER" light flashes (slowly) all the time. We also note that the ASUS routers do not have a recovery page, like D-Link. There is no Zyxel router, and the Power Light Bulb will flash with a period of 2 seconds.

If you have come to the conclusion that the device remains in recovery mode, it is better to attribute it to the service center.

The firmware recovery procedure looks difficult if we talk about any routers except D-Link. But the main thing is that the firmware itself, which will be used to restore, still need to choose correctly (even not all branded image files are suitable).

As you understand, it will not be possible to simply return the device from the emergency mode to normal - you need a file image with a suitable firmware. There are no other options.