Laptop Lenovo B590 — This is a reliable and time-tested model that is still actively used in many offices and homes. Despite its age, the device is quite capable of handling basic tasks, including internet surfing, but it requires a stable wireless connection. Users often encounter a situation where, after reinstalling the operating system or a sudden crash, wireless network indicator the light stops burning and internet access is lost.
Restoring the module's functionality requires a comprehensive approach, as the problem could stem from software errors in the drivers or a simple physical button malfunction. In this article, we'll cover all possible scenarios in detail, from simple switches on the case to complex manipulations in the Device Manager. It's important to check each step sequentially to accurately determine the cause of your malfunction. laptop.
Before moving on to complex settings, make sure the device even recognizes the wireless adapter. Sometimes the system may not display the network icon due to power-saving modes or software conflicts. Below, we'll cover a procedure to help restore this. online status your computer.
Physical switches and hotkeys
The most common reason for the lack of Wi-Fi on a model Lenovo B590 The problem lies in mechanical or software blocking of the signal. Unlike more modern Ultrabooks, this laptop often retains a physical slider on its case. It's usually located on the front edge of the device, next to the status indicators. If this switch is slid to the "Off" position, no Windows settings will activate the module.
The second level of control is the function keys on the keyboard. The combination Fn + F5 (or sometimes just F5) is designed to quickly enable and disable wireless interfaces. When pressed, a menu should appear on the screen. Lenovo Wireless Device Settings, where you can separately activate Wi-Fi and Bluetooth. If the menu doesn't appear, the proprietary control utilities may not be installed.
⚠️ Note: On some modifications, the F5 key may be reserved for other functions, so try also the combination Fn + Esc or check for a separate button with an image of an antenna.
If physical methods fail, it's worth checking the status of the indicators. A lit LED with an antenna symbol usually indicates module activity. No illumination when the switch is on may indicate a power failure on the board or a critical error. BIOS.
It is also worth noting that in some cases the key sticks Fn This could simulate a constant keystroke, blocking the adapter. Cleaning the keyboard or checking it with the on-screen keyboard will help eliminate this issue.
Checking the adapter status in Windows
If the physical switches are set correctly, the next step is troubleshooting within the operating system. Windows may programmatically shut down the device to save power or after an update. First, open the Network and Sharing Center. This can be done from the taskbar or by searching for it within the operating system.
In the Network and Sharing Center window, find "Change adapter settings." This displays all network interfaces installed on your computer. We're interested in the device named Wireless network or Wireless Network ConnectionIf this icon is gray and labeled "Disabled," you need to right-click it to activate it.
In some situations, the adapter may be hidden or removed from the list of visible devices. To check this, right-click an empty space in the Network Connections window and select "Show hidden devices." If the adapter appears but has an error icon, the problem lies deeper, likely with the drivers.
☑️ Adapter diagnostics
It's also worth paying attention to the connection status. If the device is turned on but displays "No connections," try clicking the "Diagnostics" button. The built-in Windows troubleshooting wizard can sometimes reset the protocol settings on its own. TCP/IP and restore connection.
Installing and updating drivers
The most common problem after reinstalling Windows on Lenovo B590 The problem is the lack of proper drivers. Without the appropriate software, the operating system sees the device as "Unknown Hardware" and can't use it. First, open Device Manager via the command line or the Start menu.
In the Device Manager, find the "Network Adapters" section. If you see the name of your module there (for example, Realtek, Atheros or Broadcom), but the icon has a yellow triangle, indicating that the driver is not working correctly. If there is no adapter at all, check the "Other devices" section for any unknown components.
| Adapter manufacturer | Device type | Required driver | Compatibility status |
|---|---|---|---|
| Realtek | RTL8723AE | Realtek PCIe Wireless LAN Driver | Full |
| Atheros | AR9485 | Atheros Wireless LAN Driver | Full |
| Broadcom | BCM4313 | Broadcom Wireless LAN Driver | Full |
| Intel | Centrino | Intel PROSet/Wireless Software | Full |
Drivers should be downloaded only from the manufacturer's official website or trusted archives, since the versions for Windows 7 And Windows 10 may differ. After installing the files, be sure to reboot your system for the changes to take effect.
What to do if there is no official driver?
If the driver for your version of Windows is missing, try installing the version for an older OS in compatibility mode. To do this, right-click the installation file, select Properties -> Compatibility, and select Windows 7 or 8.
Sometimes a manual update via Device Manager, specifying the path to the folder with the unpacked drivers, helps. The system will automatically find the appropriate one. INF file and establish a connection with the equipment.
Configuring the WLAN service and registry
A special system service is responsible for wireless networking in the Windows operating system. If it is disabled, enabling Wi-Fi becomes impossible. To check its status, click Win + R and enter the command services.msc.
In the list that opens, find the service WLAN AutoConfig (or "WLAN AutoConfig Service"). Double-click it to open the properties window. Make sure the startup type is set to "Automatic" and the service is running. If it is stopped, click "Start."
⚠️ Warning: Changing registry settings or services may affect system stability. We recommend creating a restore point before making any changes.
In rare cases, a registry edit may be required to force the adapter to activate. This is especially true if the system has "forgotten" the module's presence. However, such steps should only be performed by experienced users, strictly following the instructions for the specific version. OS.
After starting the service, it's recommended to check your power settings. In the adapter properties in Device Manager, on the "Power Management" tab, uncheck "Allow the computer to turn off this device to save power."
Actions via BIOS and UEFI
At the hardware level, the wireless module can be controlled through the BIOS settings. On laptops Lenovo B590 Entering the BIOS is usually done by pressing the key F2 or Fn + F2 when loading. Sometimes a special button is used Novo Button next to the power socket.
In the BIOS menu you need to go to the tab ConfigurationHere you should find an item related to wireless devices, for example, Wireless LAN or Onboard WLAN Device. Make sure that the value opposite this item is Enabled. If installed Disabled, change the parameter and save the settings.
There may also be an option in the BIOS OS Optimized Defaults. Activating it resets the settings to factory defaults, which can help if the configuration was accidentally changed. After saving the changes (F10) the laptop will reboot.
It's important to remember that the BIOS interface may differ depending on the firmware version. Be careful when navigating to avoid changing critical system boot parameters.
Common mistakes and how to fix them
Even with the correct settings, users may encounter specific error codes. For example, error code 10 in Device Manager often indicates that the device cannot start. This may be due to a resource conflict or physical damage to the module.
Another common problem is constant connection drops. This is often resolved by updating the router firmware or changing the broadcast channel in the router settings. On a laptop, you can try deleting the network profile and reconnecting using the password.
If your laptop stops detecting networks after waking from sleep mode, the problem lies in the power saving settings discussed above. It's also worth checking if you have an antivirus program installed that has a network blocking feature, which could conflict with the drivers.
Error code 43
What does this mean?: Error 43 indicates that Windows has stopped this device because it has reported problems. Often, completely removing the device from the Device Manager and then rebooting to allow the system to re-detect the hardware helps.
If software solutions fail and Wi-Fi still doesn't work, the module itself or the antenna cable inside the case may be faulty. Replacing the module Mini PCIe or Half Mini PCIe — the procedure is not complicated, but it requires accuracy.
Why doesn't the Fn+F5 button work on the Lenovo B590?
The function keys may not work due to a missing keyboard driver or Lenovo Energy Management utility. Without this software, pressing the key combination will not open the wireless device management menu.
How can I find out which Wi-Fi module is installed in my laptop?
The easiest way is to open Device Manager and view the network adapter's properties in the "Details" tab. You can also use AIDA64 or look at the model number on the sticker on the module itself after disassembling it.
Is it possible to connect a USB Wi-Fi adapter if the built-in one is broken?
Yes, this is a great solution. The external USB adapter will automatically become the primary network interface after installing the drivers. It's faster and cheaper than repairing the built-in module.
Does a low battery affect Wi-Fi performance?
In some power saving modes, when the battery level is low, the system may forcefully disable power-hungry modules, including Wi-Fi, to extend battery life.