Laptop Lenovo B590 Wireless networking is a reliable workhorse, still found in many offices and homes. However, users often encounter a situation where, after reinstalling the operating system or experiencing a sudden crash, the wireless connection stops working. The problem can lie in both software settings and easily overlooked hardware switches. In this article, we'll explore all the possible ways to activate the wireless module.
The first step is to visually inspect the device's case. Unlike modern Ultrabooks, engineers in the B590 model often left physical switches or combination keys for controlling network interfaces. Ignoring this step can result in you spending hours fiddling with Windows settings, even though the module is simply disabled at the hardware level. Let's look at the steps that will help you get back online.
Finding the physical switch and key combinations
The most common reason for the lack of Wi-Fi is an accidentally pressed key combination or a misplaced slider. On the case Lenovo B590 You should carefully inspect the front edge or sides. There may be a small mechanical switch there, marked with an antenna icon. If it's in the "Off" position, software solutions won't help.
If there's no mechanical slider, you should check the keyboard. A function key is usually responsible for activating wireless modules. F7 or F5, which must be pressed simultaneously with the key FnThe key should have an icon of an antenna or airplane. Pressing this combination sends a signal to the controller to turn on the module's power.
- 📡 Find the key with the image of an antenna on your keyboard (often this is F7 or F12).
- 🔘 Check the front edge of the laptop for a sliding switch.
- ⌨️ Press the combination
Fn + F7and wait 2-3 seconds for the notification to appear.
Sometimes the system may ignore the keypress if a dedicated hotkey driver isn't installed. In this case, the on-screen indicator won't appear, but the module may still turn on. Try pressing the combination several times, pausing between each press. It's also worth checking to see if the key itself is physically stuck, as dust and dirt often cause poor contact.
⚠️ Attention: If the Wi-Fi indicator on the case lights up but the network doesn't appear, the problem is most likely software-related. If the indicator doesn't respond at all, the module may not be receiving power or may be faulty.
Diagnostics via Windows Device Manager
If the physical buttons have been verified, the next step is a deep diagnostic in Windows. We need to make sure that the operating system even "sees" the installed network adapter. To do this, open device Manager, by entering the appropriate query in the Start menu or using the command devmgmt.msc.
In the window that opens, find the "Network Adapters" section. Expand it and look for a device with the word Wireless, Wi-Fi or 802.11 in the name. If the adapter is present but its icon has a yellow exclamation point, this indicates a driver issue. If the adapter is missing entirely, it may be disabled in the BIOS or physically faulty.
Double-click the adapter's name to open its properties. Go to the "General" tab and look at the "Device Status" field. It may say the device is working properly, or it may say it's disabled. In the latter case, simply click the "Enable device" button at the bottom of the window.
Users often forget that an adapter can be disabled programmatically in the Device Manager window itself. In this case, the icon will have a small downward-pointing arrow. Right-clicking on such a device and selecting "Enable" will instantly restore it to working order. This is especially important after an improper system shutdown.
Installing and updating drivers for the Lenovo B590
The lack of the correct driver is the most common reason for Wi-Fi not working on this model after a clean Windows installation. Standard Microsoft drivers may not support specific power-saving or antenna-control features of the chips. Realtek or Qualcomm Atheros, which were installed in the B590.
To resolve this issue, you'll need another computer with internet access or a USB modem connection on your smartphone. Download the latest driver from the official Lenovo support website or use the included disc. Look for the WLAN (Wireless LAN) driver that matches your version of Windows (7, 8, or 10).
| Component | Where to look | Signs of a problem |
|---|---|---|
| WLAN driver | Lenovo official website | Yellow exclamation mark |
| Lenovo Energy Management | Utilities section | The Fn keys don't work |
| Motherboard chipset | Chip manufacturer's website | Unstable USB/Wi-Fi operation |
After downloading the installation file, run it as administrator. Follow the installation wizard's instructions. It's important to install not only the Wi-Fi driver itself, but also the utility. Lenovo Energy Management, which is responsible for the correct operation of the function keys and sleep modes. Without it, the Wi-Fi button may not activate the module.
☑️ Driver installation checklist
Configuring wireless network settings
Even with the driver installed, power settings may disable the adapter to save power. Windows sometimes aggressively disables devices, considering them inactive. To prevent this, open the adapter's properties in Device Manager and go to the "Power Management" tab.
Uncheck "Allow the computer to turn off this device to save power." This will prevent the system from completely powering down the Wi-Fi module, which often resolves the issue of random disconnects. It's also worth checking the settings in the Network Control Panel.
Click Win + R and enter the command ncpa.cplFind your wireless connection, right-click it, and select "Properties." Click "Configure," then go to the "Advanced" tab. Here you can try changing the setting. Roaming Aggressiveness to "Lowest" or "Medium", which will improve connection stability in areas with multiple networks.
⚠️ Attention: Changing the settings in the "Advanced" tab may affect your connection speed. If your internet performance deteriorates after making these changes, return to the default settings or select the "Default" option.
In some cases, resetting network settings via the command prompt can help. Launch the command prompt as administrator and enter the command netsh winsock reset, then restart your computer. This will clear the network settings cache and may resolve any software conflicts.
Hidden registry settings
You can check the service's startup settings in the registry at HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WlanSvc. Make sure the Start parameter is set to 2 (Automatic).
Solving network visibility issues
It may happen that Wi-Fi is enabled and the drivers are installed, but the Lenovo B590 laptop doesn't see any available networks. This may indicate that the wireless network service isn't running. Click Win + R, enter services.msc and find the "WLAN AutoConfig" service. Make sure it's running and the startup type is set to "Automatic."
Another possible cause could be the region. In some driver versions, the region may be set incorrectly, limiting the available frequency channels. Check the region in your router settings and ensure it matches your location. You should also try changing the router's broadcast channel to 1, 6, or 11.
- 🔄 Reboot your router by unplugging it for 10 seconds.
- 📡 Make sure your laptop is in a strong signal reception area.
- 🔧 Check if Airplane mode is enabled in the Windows Action Center.
If your laptop sees your neighbors' networks but not yours, the issue may be with the frequency range. The B590 model was often equipped with modules that only operate in the 2.4 GHz band. If your router only broadcasts Wi-Fi on the 5 GHz band, the laptop simply won't detect it. You need to enable mixed mode or the 2.4 GHz band in the router settings.
Hardware diagnostics and module replacement
If software methods don't help, the problem may lie with the Wi-Fi module itself. In a laptop Lenovo B590 It's a small Mini PCIe card that fits under the bottom cover. Over time, the contacts could oxidize or the card could come loose from the slot.
To check, remove the bottom cover (usually held in place by several screws, often hidden under rubber feet). Locate the Wi-Fi module, unscrew the mounting screw, and carefully remove it. Clean the contacts with an eraser or rubbing alcohol, then reinsert the module until it clicks into place and tighten the screw securely. Also, check that the antenna wires (black and white) are securely connected.
⚠️ Attention: Before opening the case, be sure to remove the battery and disconnect the battery cable from the motherboard if possible to avoid short circuits.
If a module is physically damaged, replacing it is easy. These modules are standardized and inexpensive. When purchasing a new one, make sure it is compatible with the Mini PCIe form factor (not the M.2 used in newer models). After replacement, you will need to reinstall the drivers.
Frequently Asked Questions (FAQ)
Why did Wi-Fi disappear on my Lenovo B590 after updating Windows 10?
Windows updates often replace Lenovo-specific drivers with generic ones, which may not work correctly. Solution: Uninstall the current driver in Device Manager, check "Delete the driver software," and manually install the original driver from the Lenovo website.
The Wi-Fi light is orange, what does it mean?
An orange indicator usually means the module is enabled by software but isn't connected to any network, or the signal is too weak. If the indicator isn't lit at all, the module is turned off by the button or there's no power.
Is it possible to connect an external USB Wi-Fi adapter?
Yes, this is a great solution if the built-in module has burned out. Buy a USB adapter that supports 2.4 GHz, plug it into the port, and install the drivers. The system will recognize it as a new network device.
How do I reset my network settings to factory defaults?
In Windows 10, go to Settings → Network & Internet → Status → Network Reset. This will clear all saved passwords and reset the adapter settings to their original values.