Owners of popular laptop models such as Lenovo IdeaPad S145, often encounter a situation where the wireless network suddenly becomes undetectable or doesn't turn on at all. This can happen after an operating system update, an accidental keystroke, or a driver failure. Without internet access, a portable device becomes a typewriter, preventing it from working remotely or enjoying online entertainment.
The problem of lack of connection may be hidden in the software settings Windows, as well as in the hardware switch or BIOS state. It is important to understand that the model IdeaPad S145 The wireless adapter has its own communication module management features that differ from other series from the manufacturer. In this article, we'll cover in detail all possible methods for activating the wireless adapter and troubleshooting common errors.
Before undertaking complex registry manipulation or reinstalling the system, it's worth checking the basic physical parameters of the device. Often, the solution lies in a simple action the user may have overlooked. We'll move from simple checks to more complex hardware configuration settings.
Physical buttons and hotkeys
The fastest way to activate the wireless module is to use a special key on the keyboard. In the series IdeaPad S145 Developers often combine the Wi-Fi function with one of the function keys in the F1-F12 row. Typically, it features an antenna or airplane symbol. To activate it, press this key simultaneously with the Fn, located in the lower left corner of the keyboard.
However, in some Lenovo laptop configurations, the physical switch may be missing, and control is transferred entirely to software. If the combination Fn + F7 (or another key with an icon) doesn't produce a visible result. It's possible that special hotkey management utilities aren't installed on your system. Without them, pressing the function keys may not produce the desired effect.
⚠️ Attention: If the OSD (On Screen Display) does not appear on the screen when you press the key combination, this indicates that the driver is missing or not working correctly. Lenovo HotkeysIn this case, the keys work only as standard F1-F12.
It's also worth paying attention to the status indicators. Lights on the end of the case or above the keyboard may indicate that the modules are operating. If the wireless indicator is red or off, this is a clear sign that the adapter is disabled by hardware or software.
Activation via Windows Control Center
operating system Windows 10 And Windows 11 provides convenient tools for managing network connections. If the physical buttons don't respond, the next step should be to check the software switches in the OS interface. This is the most common method, resolving 80% of issues with suddenly lost internet.
To access the settings, expand the quick action bar. In the lower right corner of the screen, next to the clock, is the notification icon. Tapping it will reveal a tile labeled "Network" or a globe. If the Wi-Fi icon is grayed out, it means the module is disabled. Tapping it once will activate it.
In deeper settings, you can check the adapter's status through the system settings. Go to the menu Start → Settings → Network & InternetHere, in the "Wi-Fi" section, the on/off slider should be active. If this switch isn't there at all, and instead you see the message "No connections available," the problem lies deeper—most likely with the drivers or the device itself.
☑️ Diagnostics in Windows
Configuring settings in Device Manager
If standard methods do not help, you need to contact Device ManagerThis system tool allows you to see how the operating system sees installed hardware. It often happens that the adapter is simply disabled by the user or blocked by the power management system.
To enter the manager, right-click on the button Start and select the appropriate item from the menu. In the window that opens, find the "Network adapters" section. Expand it and look for a device whose name includes the words Wireless, Wi-Fi, 802.11 or brand names like Intel, Realtek, Qualcomm.
If the device is found but its icon has a downward-facing arrow, it's disabled. Right-click the adapter name and select "Enable." The system will then attempt to start the device, and after a few seconds, the network icon in the system tray should change.
What should I do if my device is marked with an exclamation mark?
If the adapter icon has a yellow triangle with an exclamation point, this indicates a driver conflict or hardware error. Try uninstalling the device (right-click → Uninstall device), then select "Action → Scan for hardware changes" from the Device Manager menu. The system will attempt to reinstall the driver.
It's also important to check your power settings. Double-click the adapter, go to the "Power Management" tab, and uncheck "Allow the computer to turn off this device to save power." This will prevent Wi-Fi from disconnecting when the laptop goes into sleep mode.
Checking services and network settings
Wireless connections in Windows are handled by special system services. If the service WLAN AutoConfig If Wi-Fi is stopped or disabled, you won't be able to enable it in any other way. It's a critical component of the operating system.
To check the service status, press the key combination Win + R and enter the command services.mscIn the list of all services, find "WLAN AutoConfig Service" (or WLAN AutoConfig). Make sure the "Startup Type" column is set to "Automatic" and the "Status" column is set to "Running."
If the service is stopped, double-click it and click "Start." It's also a good idea to reset network settings via the command line if the previous steps don't work. This will clear the network cache and reset the TCP/IP protocols.
In some cases, blocking can occur at the group policy level, especially on corporate laptops. However, for home users IdeaPad S145 This is rare. The main focus should be on the status of the auto-tuning service.
Diagnosing wireless adapter drivers
Missing drivers are the most common cause of Wi-Fi issues on new or reinstalled systems. Model Lenovo IdeaPad S145 may be equipped with modules from different manufacturers, so it is important to install the driver that corresponds to your specific hardware component.
You can check for the driver in Device Manager. If there's no "Network Adapters" section listed, or if there's an "Other Devices" section with unknown devices listed, the driver isn't installed. In this case, Windows doesn't know how to manage the laptop's hardware.
To install drivers, it is best to use the official utility. Lenovo Vantage, which is preinstalled on the laptop, or download the software from the official support website. Automatic installation via Windows Update also often helps find the appropriate driver, but it doesn't always find the latest version.
⚠️ Please note: Interfaces on official manufacturer websites and driver versions may change. Always check the latest software version for your specific laptop model in the support section of the official Lenovo website by entering your device's serial number.
If your laptop doesn't have internet access at all, you'll need to download the driver on another device (smartphone or PC) and transfer it via USB. Look for the driver based on your exact laptop model, which is listed on a sticker on the bottom of the case, for example: IdeaPad S145-15IWL or S145-15API.
BIOS settings and hard reset
In rare cases, the wireless module may be disabled at the BIOS/UEFI level. This occurs due to power failures or incorrect settings. To check this, enter the BIOS menu when booting the laptop by pressing the [Enable] key. F2 or Fn+F2.
In the BIOS menu you need to find the section related to configuration (Configuration) or security (Security). Search for parameters with words Wireless LAN, Onboard WLAN or Network Adapter. Make sure there is a value next to them. Enabled.
Another effective method is a complete static discharge, which often helps revive frozen modules. To do this, turn off the laptop and unplug the charger. If the battery is removable, remove it. Press the power button for 15-20 seconds. Then reconnect the power and try turning on the device.
After turning it on, check if the adapter appears in the system. If the module is listed as Disabled and this cannot be changed (the item is inactive), perhaps you need to update the BIOS version itself to the latest available one.
Summary table of solution methods
For convenience, all the methods discussed can be systematized. Below is a table that will help you quickly determine the appropriate course of action based on your symptoms.
| Symptom | Probable cause | Solution method |
|---|---|---|
| There is no Wi-Fi icon in the tray | The adapter is disabled or there is no driver. | Device Manager, installing drivers |
| The icon is there, but it doesn't search for networks. | WLAN service stopped | Checking services (services.msc) |
| The red indicator is on | Airplane mode or Fn button | Notification Center, Fn+F7 key |
| The adapter is not visible anywhere. | BIOS or hardware failure | Power reset, BIOS check |
Using this table will save time on diagnostics. It's always best to start with the top rows, as software errors are more common than hardware ones.
Frequently Asked Questions (FAQ)
Why did Wi-Fi disappear after a Windows update?
Operating system updates may replace working drivers with default ones that don't work correctly with your hardware. The update may also reset power settings or disable services. Solution: Reinstall the driver from the Lenovo website or perform a system rollback.
Is it possible to turn on Wi-Fi without the Fn key?
Yes, if the keyboard drivers aren't working, use the Windows Action Center (tray), go to Network Settings, or use Device Manager to force the adapter to start.
What to do if the Device Manager shows error code 43?
Error 43 means the device has reported a malfunction. Try performing a full power reset (remove the battery/disconnect the cable, and hold down the power button). If that doesn't help, the Wi-Fi module may be physically damaged.
Where can I find the exact model number of my IdeaPad S145?
The exact modification is indicated on the sticker on the bottom cover of the laptop (for example, 81NH00...). You can also find out the model by running the command msinfo32 in the Run window (Win+R).