Laptop Lenovo B590 — is a reliable workhorse, still actively used in many offices and homes. However, owners of this model often encounter difficulties when trying to connect the device to a wireless network. The problem can lie in the physical switch or in software glitches in the operating system. Properly diagnosing the adapter's status is the first step to a successful connection.
In this article, we'll take a detailed look at all possible reasons why your device might not have Wi-Fi. We'll cover hardware buttons, BIOS management, and manual driver installation. Restoring functionality The communication module often requires a comprehensive approach, especially if the laptop has not been updated for a long time.
Don't panic if the network icon has disappeared from the system tray. In most cases, the situation can be fixed without calling a service center. Simply follow a series of hardware and software checks. Below are proven solutions to this common problem.
Checking the physical switch and keyboard
The most common, but often overlooked, reason is a physically disconnected module. Lenovo B590 There may be a special slider that completely cuts off power to the antenna. If it's in the "Off" position, no software settings will help start the network. Carefully inspect the edges of the case, especially the front edge.
In addition, wireless interface control is often duplicated by a keyboard shortcut. To activate the function, you must press the combination Fn + F5On some models, this is accomplished with a dedicated button featuring an antenna. When pressed, a quick access menu may appear on the screen, allowing you to select the Wi-Fi option.
⚠️ Note: If nothing happens when you press the function keys, the manufacturer's hotkey management utilities may not be installed.
Sometimes the keyboard responds with a delay or requires more firm pressing. Make sure the key Fn not blocked by the regime Fn LockIt's also worth checking whether the wireless network indicator on the front panel of the laptop is lit. A lack of illumination often indicates that the adapter is truly disabled at the hardware level.
If the switch is working properly but there's no connection, we move on to a more in-depth diagnosis. Software control can block the device even when the switch is on. It's important to understand the difference between a physical shutdown and a software block in the system.
Diagnostics in Windows Device Manager
The Windows operating system provides powerful tools for managing hardware. To check the adapter's status, open device ManagerThis can be done through the Start context menu or by entering the command devmgmt.msc in the Run window. In the list of devices, we're interested in the "Network adapters" section.
If the wireless module is displayed with a yellow exclamation mark, it means the driver is not working correctly or is missing. If the device is named Wireless, Wi-Fi or 802.11 If the adapter isn't listed at all, check the "View" tab and enable the display of hidden devices. Sometimes the adapter may be hidden or marked as disabled.
If you find a device with an error, try the following:
- 🔍 Right-click on the adapter and select "Update driver".
- 🔄 Select "Remove device" and then click "Scan for hardware changes" in the menu at the top.
- ⚙️ Go to the device properties and check if the "Disable device" box is checked in the "Device status" field.
A simple reset often helps. Disable the adapter using the context menu, wait a few seconds, and then re-enable it. If the system reports that the device cannot be started (code 10 or code 43), this is a sure sign of a driver or power supply issue.
Installing and updating drivers for the Lenovo B590
Correct operation wireless module is impossible without the appropriate software. For the model Lenovo B590 It's common to use adapters from different manufacturers: Atheros, Broadcom, Realtek, or Intel. Installing the driver "at random" may not yield results. First, it's necessary to accurately determine the hardware vendor.
You can find the manufacturer in Device Manager by opening the properties of an unknown device on the "Details" tab. Select "Hardware ID" from the list and copy the top line. Searching for this code online will yield accurate results. However, the easiest way is to use the official Lenovo support website and enter the laptop's serial number.
The order in which drivers are installed is critical to system stability:
- 📥 First, install the motherboard chipset drivers.
- 📡 Then install the Power Management Driver.
- 📶 Only after this, install the wireless network driver (WLAN Driver).
⚠️ Note: Manufacturers' website interfaces may change, and old drivers are sometimes removed from public access. If there's no driver for your version of Windows on the official website, try the version for your previous OS in compatibility mode.
After installing all components, be sure to reboot. If automatic installation doesn't help, try running the installer as administrator. It's also worth disabling your antivirus software during installation, as it may block the installation of system files.
Where can I find the serial number?
The serial number (S/N) is located on a sticker on the bottom of the laptop. You can also find it by entering the command wmic bios get serialnumber in the command line.
Configuring adapter power settings
One common cause of Wi-Fi disconnects is an aggressive power saving policy. Windows may cut off power to USB ports or PCIe slots to conserve battery power, which can lead to connection drops. On laptops of the B590 This problem occurs quite often.
To disable this feature, return to Device Manager. Find your wireless adapter, open its properties, and go to the "Power Management" tab. Uncheck "Allow the computer to turn off this device to save power." This will force the system to keep the module active at all times.
Additionally, it is worth checking the power supply circuit:
- Open the Control Panel and go to the Power Options section.
- Click "Change plan settings" for the active plan.
- Select "Change advanced power settings".
- In the list, find "Wireless adapter settings" and set the mode to "Maximum performance".
After applying the settings, the system may require a reboot. These changes are especially important if the laptop is running on battery power. High performance mode may drain the battery faster, but connection stability will be significantly improved.
Windows Services and Network Settings
A special service in Windows is responsible for detecting and connecting to wireless networks. If it is stopped or its startup type is changed, the Wi-Fi icon will disappear. To check, click Win + R, enter services.msc and find "WLAN AutoConfig" in the list.
Make sure the startup type is set to "Automatic" and the service is running. If it is stopped, click "Start." The absence of this service prevents you from using wireless networks in standard Windows mode.
You should also check for IP address conflicts or reset your network settings. Open a command prompt as administrator and run the following commands one by one:
netsh winsock resetnetsh int ip reset
ipconfig /release
ipconfig /renew
ipconfig /flushdns
These commands flush the DNS cache and reset the TCP/IP protocol stacks. Be sure to restart your computer after completing these commands. This often resolves issues where the adapter sees networks but cannot obtain an IP address from the router.
| Team | Function | Need to reboot |
|---|---|---|
netsh winsock reset |
Resetting the Winsock catalog | Necessarily |
ipconfig /release |
Release the current IP | No |
ipconfig /renew |
Requesting a new IP address | No |
ipconfig /flushdns |
Clearing the DNS cache | No |
Troubleshooting via BIOS and Hard Reset
In some cases, wireless module settings can be changed at the BIOS level. When booting the laptop, press the F2 or Fn + F2 to enter the BIOS menu. Find the section Configuration or Advanced. Make sure the parameter Wireless LAN or Onboard WLAN does it matter Enabled.
If the BIOS settings are correct but Wi-Fi isn't working, try performing a full static discharge. Turn off the laptop, unplug the charger, and remove the battery (if removable). Press and hold the power button for 15-20 seconds. Then reinsert the battery, connect the power cord, and turn on the device.
⚠️ Note: Removing the battery is only possible on models with a removable battery. If the battery is built-in, simply unplug the charger and hold down the power button.
This procedure helps clear errors in the power controller that may be blocking power to the Wi-Fi module. After this procedure, the system will reinitialize all connected devices. In rare cases, resetting the BIOS settings to factory defaults (Load Default Settings) may be necessary.
☑️ Diagnostic checklist
Frequently Asked Questions (FAQ)
Why doesn't my Lenovo B590 laptop see any Wi-Fi networks, even though my phone does?
The problem is most likely with the driver or a disabled adapter. Check Device Manager for errors. Also, make sure the WLAN AutoConfig service is running. If the adapter is identified as "Device with Unknown ID," a driver needs to be installed.
Is it possible to use an external USB Wi-Fi adapter if the built-in one is burned out?
Yes, this is a great solution. Any modern USB dongle that supports Windows 10/11 will work automatically or after installing drivers from a disc or website. The built-in module can be disabled in the BIOS or Device Manager to avoid conflicts.
How do I find out which Wi-Fi adapter is installed in my Lenovo B590?
The best way is to use AIDA64 or look up the "Hardware ID" in Device Manager. The information is also often found on a sticker under the battery or on the module itself if you remove the bottom cover.
Why did Wi-Fi disappear after reinstalling Windows?
During a clean installation, Windows often doesn't automatically find drivers for old hardware. You'll need to download the WLAN driver from another device (such as a phone or another PC) and transfer it to your laptop via USB cable for installation.