Data transmission without the use of cables literally not so long ago seemed like something from the realm of fantasy, and today the wireless WiFi network at home, at work or in a nearby cafe does not surprise anyone. But even with such a connection, some problems may occur. Connection error - a phenomenon that occurs quite often. Let's consider the most characteristic problems and the simplest methods for their elimination.
Wireless network connection: no connection. What is the reason?
As for the most common reasons, they can be divided into two main types: problems at the hardware level (non-working equipment) and errors of a software nature.
In the first case, as is already clear, it is necessary to conduct a complete diagnostics of the equipment, and then make a decision on its repair or replacement (this applies to network cards, routers, mobile devices, and external or internal Wi-Fi modules). In the second case, there are several situations where there is no wireless network connection (no connection). Among the main distinguish the following:
- disabled Wi-Fi module or adapter ;
- Password entered incorrectly
- router issues
- Incorrect connection settings
- Missing, incorrectly installed, or outdated network device drivers
- lack of an established network;
- exposure to viruses.
For obvious reasons, problems with viruses will not be considered, since any user must take care of protecting their system on their own. Partially we will touch upon the lack of a network, if for some reason it was installed in the system, but then disappeared (this, unfortunately, also happens). Finally, we will not dwell on the fact that the user could forget or incorrectly enter the WiFi network password, and problems from the providers. These situations in our case are not so significant.
Wireless network connection: no connection. What to do in the simplest case?
To begin, consider the simplest situation. Suppose, at some point, the wireless network connection is lost. Perhaps the reason is a short-term software failure. What do most users usually do in such cases? They just reboot the system (after all, everything worked before).
If this does not help, and the signal loss time is known at least approximately, one of the solutions to the problem that when trying to connect to an existing network a connection error pops up can be a normal system rollback to the previous state through the corresponding section of the Control Panel. But, as practice shows, the problem is usually much deeper.
Diagnostics of connection by means of the system
If for some reason the Wi-Fi wireless network connection disappears, you can find out the reason using Windows tools. If you call the menu through right-clicking on the network icon in the system tray, you can use the diagnostic tool in it.
The system will conduct an analysis on its own, after which it will produce the corresponding result. Please note: this tool does not fix anything, but only helps to determine the nature of the problem.
Checking Wi-Fi module activity
One of the most common reasons for the lack of communication, many experts call inattention or carelessness of users.
For the most part, this applies to owners of laptops on which there is no special switch for activating the built-in Wi-Fi module, and its turning on or off is done by using a combination of some key with a special Fn button. It is clear that even when typing using the so-called hot keys, you could easily and completely accidentally disconnect the adapter. Therefore, first you need to make sure that it is in active mode.
Reset Router Settings
Sometimes the reason that there is no wireless network connection (no connection) may be a short-term malfunction of the router. Most often, this situation is observed with inexpensive TP-Link routers.
And in this case, it is recommended to use the simplest method of resetting the router. You can do two things: either completely turn off the power for about 10 seconds, or press the special reset button on the back of the device and hold it for 30 seconds.
Network Settings Identification
Now, if the WiFi wireless network is not detected, let's look at the basic network settings. To view them, you should enter the network and sharing management section from the “Control Panel” or from the menu of clicking on the network connection icon and use the section for changing network adapter settings .
Here you need to find the TCP / IPv4 protocol (if IPv6 is not used) and click the properties button. As a rule, most providers provide automatic parameter detection services, which should be recorded in the settings. In this case, it is worth paying attention to the fact that the use of a proxy server for local addresses must be deactivated (unless otherwise provided). Otherwise, you just need to enter all the parameter values in accordance with the settings that were provided by the provider when connecting.
Correction of connection parameters on the router
If, after this, the connection problem remains, perhaps it consists in the settings of the router itself.
Just in case, it’s worth entering the router settings menu through any web browser by entering the appropriate address (192.168.0.1 or 1.1), and then in the wireless section (usually Wireless), make sure that it is active (Enabled).
Troubleshooting driver issues
Another network problem may be that the network card drivers are missing, improperly installed or outdated in the system. You can make sure that the device does not work, in the "Device Manager", which can be called up even from the "Control Panel", even from the computer administration section, even from the "Run" menu with the devmgmt.msc command.
A non-working device will be marked with a yellow marker. This is a direct indication that something is wrong with the driver. But it also happens that among the problematic devices the network card is not displayed. This is due only to the fact that the system installs the most suitable driver for it, considering it optimal.
In any case, it will have to be reinstalled or updated. This can be done directly from several menus. It is recommended that you first completely remove the old driver, and only then install the new one, but do not choose from what the system offers, but find the latest software for this device on the Internet in advance.
In order not to do such things, it’s better to install a program like Driver Booster, which will find and install the latest drivers for absolutely all devices. It is clear that for this you will have to go to the same cafe with a laptop as the connection and use the WiFi password to enter the network (there is no connection at home). The update process will take a maximum of 10-15 minutes, followed by a reboot.
Reset from the command line
If the network is still detected, you can still try the following actions. We call the command line with administrator privileges (cmd in the Run console), after which we write the proxycfg –d command, and after pressing the enter key two more - net stop wuauserv and net start wuauserv (after each - also “Enter”). Such simple actions can also help.
If the network is not detected at all ...
Finally, the last problem when there is no wireless network connection (no connection). It is possible that due to some reasons, among which the influence of viruses is not excluded, the previously created network was simply deleted.
In this case, you need to go to the shared network management section and make sure that the wireless network is displayed in the list of available connections. If there is none, you will have to recreate it by selecting the appropriate item. It takes a minimum of time.
If there is a network, but all of the above methods to resolve the problem do not help, you can try to simply delete it completely and completely, then create it again and make the appropriate TCP / IP protocol settings.
Conclusion
In conclusion, it remains to add that these are only the main, most common problems and methods for solving them, which any user can use to fix failures. Various kinds of commands were not specifically considered here, allowing for a complete testing of IP connections or assigned MAC addresses, pinging, etc., since they may seem quite complicated for ordinary users to understand. In other cases, even the simplest means will help. However, this in no way applies to cases where equipment fails. Here, no software methods will help, no matter how you try.