Laptop Lenovo B590 (model 20206) is a reliable device that still handles basic tasks successfully, but owners often encounter difficulties when trying to connect to the internet. The problem could lie in the hardware switch or a software driver glitch, requiring a thorough diagnosis of each system component. In this article, we'll examine all possible causes of a failed wireless connection and offer practical solutions.
First, it's important to understand that the absence of a network icon or a cross on the WiFi icon is just a symptom, which could be a simple case of disabling the module with a button or a more complex error in the device manager. Hardware level Controls are often overlooked by users who immediately dive into Windows settings, wasting time. We'll start with the physical controls, then move on to the software and drivers.
It is important to note that the model 20206 has its own layout features that differ from the newer IdeaPad or ThinkPad series. Physical switch This can be combined with other functions, and Lenovo Energy Management software plays a critical role in the operation of communication modules. Let's go through each step in order so you can restore your connection.
Finding a physical switch and keyboard shortcut
The first thing the owner needs to do is Lenovo B590 — is to carefully inspect the device's case for mechanical switches. Unlike modern ultrabooks, this model often has hardware button, located on the front edge or side, which completely cuts off power to the WiFi module. If there is no such button, control is performed exclusively via the keyboard.
On the laptop keyboard, a function key is responsible for activating wireless networks. F7 (Sometimes F5 or F12 (depending on the board revision), which depicts an antenna or airplane icon. To activate the function, press the combination Fn + F7, which sends an interrupt to the controller to turn on the module's power. If simply pressing it doesn't help, try holding the key down. Fn within 2-3 seconds.
⚠️ Important: If the Lenovo OSD (On-Screen Display) does not appear when you press a key combination, this means the Lenovo power management utility is not installed or is not running. Without it, the hotkeys may not function.
Sometimes users forget that Airplane mode can be activated at the BIOS level or in a previous Windows session. Indicators The LEDs on the case (usually near the power button or on the edge) should light up or change color after successful activation. If the LEDs are silent, the problem may be deeper than just a software glitch.
Setting up a wireless adapter in Windows
If physical manipulations don't work, you should turn to the software portion of the operating system. In Windows 10 and 11, network interface management has become more automated, but manual settings often override automatic ones. Open Control Panel by following this path: Control Panel → Network and Internet → Network and Sharing Center, and select change adapter settings.
In the window that opens, find the icon Wireless network (Wireless Network Connection). If it's grayed out and labeled "Disabled," right-click it and select "Enable." In some cases, the system may require administrator privileges to perform this operation. Once enabled, the adapter will begin searching for available networks, which will take 5 to 15 seconds.
It's also worth checking your power settings, as Windows may automatically turn off the device to save power. In Device Manager, in the properties of your WiFi adapter (usually Atheros, Realtek or Intel), go to the "Power Management" tab and uncheck the "Allow the computer to turn off this device" option.
For a more in-depth diagnosis, you can use the command prompt. Run it as administrator and enter the command netsh wlan show driversIn the output, look for the line "Hosted Network Support" or the driver status. If the driver doesn't support the required protocols or isn't working correctly, the system will display a warning.
Installing and updating drivers for the Lenovo B590
The most common reason for non-working WiFi on a model 20206 The problem is the lack of the correct driver or a version conflict. Laptops in this series were often equipped with modules from different manufacturers: Atheros AR9485, Realtek RTL8723AE or Intel CentrinoThere is no universal driver, so it is necessary to accurately identify the hardware.
To determine the exact model of the adapter, open the Device Manager (command devmgmt.msc) and expand the "Network adapters" tab. If the device is displayed as "Unknown device", right-click, select "Properties" → "Details" → "Hardware ID". The copied code (for example, PCI\VEN_168C&DEV_0032) will help you find the required driver on the Internet by VID and PID.
| Module manufacturer | Typical model | Where to look for the driver | Peculiarities |
|---|---|---|---|
| Atheros | AR9485WB-EG | Lenovo or Qualcomm website | Frequent crashes after Windows 10 update |
| Realtek | RTL8723AE | Realtek official website | Requires manual software installation |
| Intel | Centrino Wireless-N 1000 | Intel Download Center | The most stable job |
| Broadcom | BCM4313 | Broadcom website | Rare, but found in early revisions |
After downloading the installation file, be sure to run it as administrator and follow the wizard's instructions. Reboot After installation, this step is mandatory, even if the system states it's not necessary. Only after a restart will the Windows kernel fully load the new driver modules.
What to do if the driver is not installed?
If the installer returns a compatibility error, try running the file in compatibility mode for Windows 7 or 8. To do this, right-click the installer → Properties → Compatibility → Run in compatibility mode for... and select the desired OS.
The Role of Lenovo Energy Management in WiFi Operation
A unique feature of laptops Lenovo is a utility Energy Management, which takes control of wireless modules. If this program is removed, damaged, or the wrong version is installed, the keyboard shortcut Fn+F7 stops working, and WiFi status may be blocked by software. For the B590 (20206) model, it's critical to use the version compatible with your OS.
You can check the service's availability and status through Control Panel → Programs and Features. If the utility isn't available, download it from the official Lenovo support archive, selecting the version specifically for your operating system (Windows 7, 8, or 10). After installation, a battery icon will appear in the system tray, allowing you to manage your wireless network status.
The program interface should have a button or switch labeled "Wireless Devices" or "WiFi." Make sure the status is set to "On." Software blocking In this utility, it takes precedence over Windows settings, so even if the adapter is enabled in the OS, Energy Management can disable it.
⚠️ Important: When reinstalling Windows on a Lenovo B590, always install the chipset driver first, then the Energy Management driver, and only then the WiFi driver. Installing the wrong driver in this order may cause the function keys to stop working.
Resetting network settings and TCP/IP diagnostics
If the drivers are installed and the indicators are lit, but there's no connection, there may be a problem with the TCP/IP protocol stack or DNS settings. In such cases, a complete reset of network settings via the command prompt is effective. Open the command prompt with administrator privileges and run the following commands to clear the cache and reset the configuration.
netsh winsock resetnetsh int ip reset
ipconfig /release
ipconfig /renew
ipconfig /flushdns
After running the last command, you need to restart your computer. This removes invalid registry entries related to network connections and resets DHCP settings. This often resolves the issue where the laptop can see networks but cannot obtain an IP address or connect to the internet.
It's also worth checking the "WLAN AutoConfig" service. Click Win + R, enter services.msc and find this service in the list. Make sure the startup type is set to "Automatic" and the service is running. If it is stopped, WiFi will not work regardless of the driver status.
☑️ Network Diagnostic Checklist
Hardware malfunctions and module maintenance
When software methods have been exhausted, physical damage cannot be ruled out. In a laptop Lenovo B590 The WiFi module is a small board connected to the motherboard via a Mini-PCIe slot. Over time, the contacts can become corroded, and the antenna wires (black and white) can become disconnected from the connectors on the module's board.
To check, you will need to remove the bottom cover of the laptop (usually it is enough to unscrew one screw with the antenna icon or remove the entire panel if the structure is one piece). Visual inspection It should show whether the antenna connectors are firmly seated. It often happens that, during dust cleaning or impact, one of the wires becomes disconnected, resulting in a complete loss of network service or an extremely weak signal.
If a module burns out or fails, it can be replaced with a universal equivalent with a Mini-PCIe interface. However, when purchasing a new module, make sure it doesn't have any whitelist restrictions (a list of allowed devices in the BIOS), although this is rare for the B590 series. A simpler solution is to use an external USB WiFi adapter.
Frequently Asked Questions (FAQ)
Why did WiFi disappear on my Lenovo B590 after updating Windows 10?
Windows updates often replace Lenovo-specific drivers with standard ones, which may not work correctly with your hardware. Solution: Uninstall the current driver in Device Manager, check "Delete driver software," reboot, and install the driver manually from Lenovo's website or the chip manufacturer's website (Atheros/Realtek).
The WiFi light is orange, what does it mean?
An orange (or amber) LED on Lenovo laptops usually means the module is enabled by software, but there's no physical network connection, or Airplane Mode is activated. Check your router settings and make sure the wireless button on the device isn't set to OFF.
Can I use a WiFi adapter from another Lenovo model?
The Mini-PCIe slot is physically standard, but the BIOS may have a whitelist (a list of allowed devices). This limitation is rare for the B590 (20206), but it's possible. It's best to use universal cards from Intel or Atheros, which are known for their compatibility.
How can I find out the exact model of a WiFi module without opening it?
Use the command cmd and enter wmic path win32_pnpsigneddriver where"devicename like'%wireless%'" get devicename, hardwareidYou can also use the free snail-based tools AIDA64 or HWiNFO, which will display detailed information about connected devices.