No one is safe from wireless Internet problems. The W-Fi connection can be dysfunctional for a number of reasons. And it is not necessary that these reasons will be somehow related to each other.
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You can simply check why the laptop does not see the Wi-Fi network. To do this, we first check the access point or router, as well as the laptop itself for operability. It is important to know which device is the problem.
Let's start with the router. A fairly common cause of malfunction is the banal "freeze" of equipment. The first sign of this is an atypical indication, that is, the LEDs on the router blink in an unusual mode. To fix the situation, restart the device or turn it off from the outlet, wait a couple of minutes, and then turn it on again. If it's a minor internal glitch, restarting will fix the problem. The laptop, in turn, will quickly pick up the signal.
Power surges can cause a reset. The router stops transmitting the signal. In some cases, the internet connection gets lost as well. If this happens, then the settings must be re-entered using the device's web interface. Input addresses: 192.168.1.1 or 192.168.0.1. The choice will depend on the router model. You can get to the interface from any browser. If after that the connection works, then everything is in order with the device.
Useful advice: The reason for the failure of a router is often an involuntary reset of the router to its original settings. To set up the configuration again, it is better to use the services of specialists from the provider's company.
If each of the methods for checking the router did not work, you need to check why the laptop does not see Wi-Fi. First of all, we check the activity of the network equipment. Most modern laptop models have LEDs on the case. We will be interested in the one marked with the antenna icon or directly with the inscription "Wi-Fi". If the diode is on, then the built-in adapter is functioning. Otherwise, the adapter must be started. We hold down the "Fn" key and one more, where there is an antenna icon.
The reason for the temporary inoperability may lie in the failure of the functioning of the operating system software. Connection activity will be checked through the Windows "Control Panel". If it does not work, then the launch is carried out using the context menu.
The NE may be completely missing from the list of available connections. We check the section "Network adapters", and more specifically - wireless devices "Wireless". We enable the adapter using the context menu. Then we restart the computer.
Why can't my laptop see wifi? Typical Causes
There are several simple reasons why the laptop cannot see Wi-Fi. For instance:
- The router is not turned on - turn on the router;
- No Wi-Fi coverage - get closer to the source;
- Your router is "buggy" - we reboot it;
- The W-Fi receiver is not turned on - turn it on.
However, there are also more serious connection disruptions. These include:
Wi-Fi is slow, why?
In addition to the fact that the computer does not see the "Wi-Fi", the problem of a slow connection is also relevant. There are several reasons:
Sometimes laptop users are faced with the fact that the technique ceases to see the Wi-Fi network. There can be several reasons for this problem. They are hidden either in the device itself or in the router.
Find out if there are any problems with the router
First of all, you need to check if there is a problem with the router. This requires an additional device such as a smartphone. Try to find a network with it. If the equipment connects to Wi-Fi and goes online without problems, then the problem is exclusively in the computer. If other devices cannot see the network either, the router needs to be repaired. There are several ways.
Reboot
Power off and on the router using the button usually located on the back of the case. This will restart all processes running by it. After it boots up again, try to find the network.
By pressing the button on the back of the case, you can restart the router
Reset parameters
Perhaps the settings of the router are lost for some reason. The easiest way to restore them is to reset the parameters to their default values. To do this, on the back panel of the router, hold down the Reset button for 10-15 seconds. When the icons start flashing, the router will reboot. The button can be released - the settings are reset. Check again if the network is working.
Pressing the Reset button will reset the router settings.
Reconfiguration
After resetting the settings, all parameters must be set again:
Also try connecting a LAN cable or modem directly to your computer to see if it works or not. Maybe the Internet is not paid or there are problems on the operator's side. If so, then the problem should not be solved with a computer or router.
Channel change
If there are several devices at home connected to a Wi-Fi network, it is possible that their frequencies overlap. Therefore, it is worth trying to change the settings. Go to the Wireless Setting section and set a new value for the Channel parameter.
Set a different value for the Channel parameter so that there is no conflict in the network
Solving laptop problems
If the problem with the network occurs exclusively on the laptop, then you need to check if the Wi-Fi adapter is activated and if the necessary drivers are installed.
Please note that if you do not have a Wi-Fi settings section, this may mean that this module is not included in the package of your laptop and it is not able to receive a wireless signal. In this case, you will have to purchase an external receiver separately.
Module activation
The adapter responsible for working with Wi-Fi may be deactivated. There are several ways to enable it. See if the laptop has a dedicated button with a signal icon. Just click on it to activate the module. Also inspect the F1-F12 keys, one of them should enable and disable the adapter. Often the default is Fn + F5.
Photo gallery: module activation by means of buttons
To turn on the Wi-Fi adapter, try pressing the Fn + F5 combination. The Wi-Fi adapter power button may be located on the laptop keyboard. You can turn on the Wi-Fi module on some laptops using the button on the case
Module activation by means of Windows
Also, the module can be enabled through the system parameters:
Then try connecting to the network again.
Driver check
Drivers are required for the components of your computer to function properly. Initially, they are installed automatically, but over time they may no longer be relevant, so it is worth reinstalling them manually:
- Expand Device Manager. You can find it using the system search bar.
You can find the device dispatcher using the search bar
- A list of all devices connected to the computer will be displayed. Find your wireless adapter (if there are more than one, follow the steps below for each), select it, and proceed to update your drivers.
Select the adapter and click the "Update drivers" button
- By the name of the adapter, find the latest drivers for it on the Internet. It is recommended to download drivers only from the manufacturer's official website.
We select the option "Search for drivers on this computer"
- Specify the path to the previously downloaded file and wait for the installation to complete. Then restart your computer for the changes to take effect and check if the Wi-Fi is working.
Specify the path to the drivers file
Video: what to do if the laptop does not see Wi-Fi
What to do if all else fails
If you have followed all the above steps, but Internet access has not appeared, there remains one option - the Wi-Fi module is broken. You will not be able to fix it yourself; you will have to contact the service center for specialists to do this. If the warranty period has not yet expired, assistance will be provided free of charge.
Thus, the laptop may not connect to the network for two reasons: the router is not functioning correctly or the Wi-Fi module is not working. To fix the router, you need to reboot or reset its settings. To make the module work, you need to enable it and install the drivers.
Sometimes situations arise when the network seems to be configured, and the terminal is connected to a wired or wireless network, and the parameters are set correctly, but all the same, the local computer does not see the computers on the network or even the networks themselves active at the moment. There can be many reasons for this, as well as ways to eliminate such problems. Let's consider the most common ones.
Why can't the computer see the network?
To begin with, when establishing a connection using a wired connection, first of all, you should check whether the cable is firmly inserted into the network card of the local terminal or into the distributing computer unit (laptop or router) in the case of Wi-Fi-based wireless networks.
These are problems of a physical nature, which are not worth focusing on. Consider the cases when the computer does not see any type of network and, accordingly, the terminals connected to them, associated with some parameters and settings of this kind of connections.
Immediately I would like to draw your attention to the fact that computers connected to a network of any type and currently in a low power consumption mode (hibernation or sleep) will not be perceived by the local terminal either, considering them disabled.
Problems with wireless networks
Let's start with wireless networks. If the local computer does not see the WiFi networks that are currently active, there are several reasons for this situation, of which the following are the most common:
- incorrect configuration of access to networks on a single computer;
- incorrect router parameters;
- disabled or faulty Wi-Fi module (or network adapter);
- missing or incorrectly installed driver;
- blocking the connection by antivirus, built-in Windows firewall or third-party firewall.
Most of the points apply not only to cases when the computer does not see the WiFi network. This applies equally to wired connections (with the exception of
To fix the problem, you first need to turn on the Wi-Fi module (on laptops, function keys with the Fn button are provided for this). On routers, you need to go into advanced settings and check if the wireless connection is enabled. If this does not help, you may have to change the channel (the easiest way to do this is using the automated Insider for Home utility.
Disabling encryption (authentication section) can sometimes help. To correct the situation, set the value to Open System. Finally, the problem may be the length of the key (section "WPA Preshared Key"). If its length exceeds 20 characters, the router will not be able to work with such a key.
As for IP addresses and other settings, in the properties of the default TCP / IP protocol, you need to set them to automatically receive them. In the "Task Manager" you can try to reinstall the drivers and the corresponding controllers. You can also use dedicated driver update programs such as Driver Booster.
The computer does not see computers on the network: setting group names
However, even with the correct settings, the situation may not change. Let's take an example when the computer cannot see the local network. Most experts associate this problem with incorrect assignment of group names, because Windows (most often XP) does not display a list of existing local groups when creating a new connection, but by default it sets its own new group (WORKGROUP).
The method for eliminating the error consists in renaming the group and the name of the local computer in it. To do this, enter the terminal name section in the Control Panel or in the computer properties menu, click the Change button and specify the exact same name of the group and local computer as on the target terminal.
Using static IP addresses
Another problem that the local computer does not see computers on the network may be that the single terminal does not provide for automatic retrieval of IP address settings and server settings.
To change them, you need to enter the menu of the active network connection and select the setting of the properties of the TCP / IP protocol (v4 or v6). Here, for each terminal, you need to register IP addresses, gateway values, parameters of the preferred and alternative DNS server and uncheck the box for using a proxy for local addresses.
After that, by pressing the "Advanced" button, go to a new window of parameters and in the WINS tab at the bottom we activate the line for enabling NetBIOS over TCP / IP.
Configuring system services
Another way to check the connection is to use the administration (management) section, where the "Services" item is selected. The easiest way to access it is through the Run console (Win + R), where the services.msc command is entered.
Here we use the line of services and applications, where in the additional section of services on the right we find the line of the computer browser. Make sure that the startup type is set to automatic. If another parameter is specified, change it to activate the component.
Resolving firewall problems
Finally, the problem that the local computer does not see computers on any type of network may be related to a blocking that is independently installed by antivirus software that considers the connection to be unreliable, or a firewall. With antiviruses, this situation is very rare, but you can try to disable the firewall.
To deactivate the standard Windows firewall, use the Security Center section in the Control Panel, where the firewall is disabled. If there is third-party software installed in the system, it is also recommended to deactivate it.
If you do not plan to disable the firewall, you can try to create a new rule for TCP / IP and add the corresponding connection or port to the list of exclusions.
A few final words
That's it for troubleshooting basic network connection errors and how to fix them. It did not consider the problems of viral exposure and all sorts of malfunctions of individual "iron" components or the lack of general access to individual terminals. But in terms of correctly setting the basic settings, the above methods help in almost all cases.
The most common laptop problems are setting up and connecting to Wi-Fi networks. Therefore, before proceeding with possible solutions to this particular problem, you first need to check whether the connection itself is configured properly or not.
What is the reason?
The malfunction may lie, for example, in the router used by the user, or in the operating system itself. The most common reasons why Wi-Fi is not displayed or the laptop does not see it may be due to the fact that: The Wi-Fi router is frozen or not configured, there may be various problems with the device that connects to Wi-Fi , Internet access is blocked by a firewall or antivirus, and DHCP does not provide an IP address.
Troubleshooting
To find out the cause and then fix the problem, you need to check the router. To do this, restart the router and see if the network is displayed in the list. If this has not happened yet, then it is necessary to disconnect the network cable from the router and rearrange it into the appropriate connector.
This will allow you to check if the Internet comes from the provider at all or not. If the Internet does not come in, then the matter is directly with the service provider, and otherwise, it will be required. To configure it, you need to go to the address 192.168.1.1, or 192.168.0.1, depending on the router model.
If everything is in order in the settings, then you need to update or install the drivers for the network adapter. You can easily find them on the Internet, but this will require you to find out the model. To do this, open the "Control Panel" and select "Device Manager" from the menu. In the list you need to find the item "Network adapters". Here you will see a list of all network devices working on the computer, and in order to find Wi-Fi, you should select the item where the phrase "Wireless device ..." is present. After searching and installing all drivers, Wi-Fi networks should be displayed.
In the event that none of these methods helped to eliminate the pressing problem, then most likely the problem lies directly with the device itself, which is trying to find and connect to the wireless network. To test this, you can purchase an inexpensive USB Wi-Fi adapter or get one from a friend and install it. If that was indeed the problem, then it would detect wireless networks.
There are several main reasons why computer can be isolated from the rest of the network. Usually the problem lies in the wrong settings for the firewall and similar programs.
Instructions
Open the Start menu and go to Run. Enter the cmd command in the field that opens and press the Enter key. Type the ipconfig / all command in the menu that appears and write down the MAC address of the required network card. Enter its value in the above table.
Clear the Routing Table or Route Table menu items that are associated with this computer ohm. Make sure NAT is enabled for this PC. Save your router settings.
Now check the settings yourself computer a. First, be sure to disable third-party programs that monitor network traffic. It can be the Outpost Firewall utility or its analogs. Now turn off the Windows Firewall service. As practice shows, it is very difficult to set it up on your own, and the effect of its work is too little.
Open the start menu and go to the control panel. Find and open the "Administration" item, which is located in the "System and Security" menu. Open the "Services" item. Find the Windows Firewall service, right-click on it and select Stop. Now open its properties and set the Startup type to Disabled.
Check the parameters of the network adapter. Make sure the specified IP address is in a valid zone. Try changing its value to the address of one of the network computer s, after turning off the second PC. Reboot computer and try again to access network resources.
The list of reasons for the freezing of a computer / laptop is quite large: failure of system files of the operating system, overload of system resources, bad sector on the hard drive, overheating of internal parts, exposure to viruses, and others. If the laptop freezes, it needs to be restarted.
You will need
- - administrator rights.
Instructions
Laptops, unlike stationary computers, do not have a Reset button on the case. Therefore, when the system freezes, the user is left with one option: the entire device. To do this, you need to press the power button and hold it down until the laptop turns off (usually no more than 30 seconds). As a rule, the button is kept pressed all this time. Users often do not wait for the shutdown time and think that their laptop is not.
If the shutdown has occurred due to extreme overheating (this is felt by the abnormally hot air near the vents), give it time to cool down. Operating the laptop in this state will harm the components and will certainly lead to an early breakdown. You can use special stands that have built-in fans for cooling.
If your laptop stops booting as a result of a forced shutdown, use System Restore. Some laptops (for example, from the manufacturer Samsung) have a built-in system recovery partition. Insert the operating system disc and select "System Restore".
If, after the forced shutdown, the laptop does not press the power button, contact the service center. Most likely, the device freeze occurred due to an internal defect in spare parts, which can only be eliminated by specialists. Do not try to open the case. Doing so will void your device warranty if the warranty period has not yet expired. Contact the specialists at the service center, and you will certainly be helped to solve this problem, but you will have to pay.
Personal computers today no longer work like simple computers, but are part of the most advanced communication system. Combining them into a single communication network occurs both at the global level (Internet) and in small home or office groups (local area networks). Therefore, each of us may even at home face the problem of invisibility in the local network of one of the computers. You can try to find out and eliminate the cause on your own, even without having experience in system administration of information networks.
The simplest of all possible reasons for the invisibility of a computer on the network may lie in the absence of a physical connection - it's just that the network cable is not plugged into the corresponding connector on the network card. Despite the fact that most of us do not admit the thought that such an elementary defect can be missed, the practice of system administrators shows that it is the simplest reason that most often turns out to be the culprit. Therefore, it is with checking the elementary options that it is worth starting to find out the reasons.
If a computer inaccessible from the network uses a Wi-Fi connection, then it will be useful to make sure that, firstly, the network is visible to the operating system, secondly, the signal level is sufficient for normal operation, and thirdly, the modem authorization system recognizes the problem computer and allows him to access the network. In the Windows operating system, all this can be verified using a component called in recent versions "Network and Sharing Center". If the problem lies in authorization, then in order to obtain the required code, you will have to enter the control panel of the modem, copy it from there and enter it into the corresponding field of the network connection window.
Another reason may be that the name of the "workgroup" is incorrectly specified in the connection properties. From computers connected by a local network, you can create several groups, each of which will have its own designation. If the problem computer is configured to work with one group, then it will not be visible from others. To eliminate this cause, you need to change the name of the workgroup in the properties of the local network connection - it should be the same for all computers for which you want to organize collaboration.
The younger editions of the latest operating systems from Microsoft do not have built-in tools for creating workgroups (they are now called "homegroups"). For example, this applies to "Windows 7 Starter" - it can only connect to a group created using some more advanced edition of the same OS version (for example, "Windows 7 Professional"). This can also be the reason for the invisibility on the network of a computer with a cut-down edition of the operating system installed in it.
What are dispatchers for?
The dispatcher who answers the customers' phone calls, takes their orders and advises them is an important link and intermediary between customers and service providers. How he works depends on how high-quality the service will be and whether the client will turn to this company again.Most companies working in the field of passenger and cargo transportation use special software or elementary databases that are maintained using spreadsheets in the work of the dispatch service. The dispatcher, whose duties also include advising clients on tariff plans, etc., accepting an order, enters it into the database, forming an electronic application and thereby connecting the driver alert system. The one who undertakes the execution of the order is also entered into the database. The dispatcher is obliged to monitor the status of the order, keeping in touch with the customer, and he must be ready at any moment to react to force majeure circumstances and promptly make a decision to replace the driver or refuse the order.
The responsibilities of a freight dispatcher are much broader. He needs to search for orders and downloads in the controlled territory, including international ones. To this end, he has to browse a large amount of information on the Internet and make numerous phone calls. To prevent the company's cars from moving empty on intercity transportation, it is necessary to find an order, agree with the customer, and until the cargo is delivered to the destination, constantly be in touch with the driver and customer, exercising operational control.
