Turning on Wi-Fi on a Lenovo B50-70 Laptop: 5 Proven Methods

Laptop Lenovo B50-70 — a popular budget model, released in 2015 but still in active use. One common user issue is the inability to connect to a wireless network due to a disabled Wi-Fi adapter. This can be caused by various factors, including an accidental keypress, a driver error, or a system setting issue. In this article, we'll cover all possible ways to enable Wi-Fi on this model, from basic to advanced.

It is important to understand that wireless module activation process It depends on the version of the installed operating system (Windows 7/8/10/11 or Linux), as well as the state of the hardware components. If your laptop has never connected to Wi-Fi before, first check the module itself in the Device Manager—some budget configurations Lenovo B50-70 were supplied without it.

Before you begin setting up your router, make sure it's working properly and that other devices (such as your smartphone or tablet) can connect to the network. This will help rule out issues with your ISP or equipment.

1. Hardware Wi-Fi activation: buttons and key combinations

The fastest way to activate the wireless module is to use the physical switches on the laptop case. Lenovo B50-70 There may be two of them:

• 🔘 Hardware switch - a small slider or button on the side/front panel of the case (usually next to the indicators). On the model B50-70 it is located on the right side of the front, next to the headphone jack.
• ⌨️ Hotkeys - combination Fn + F5 (or Fn + F7, depending on the BIOS version). On the key F5/F7 An antenna icon should be drawn.

After pressing, check the Wi-Fi indicator (usually a blue or orange LED next to the switch). If it lights up or changes from orange to blue, the module is activated. If not, try holding Fn 2-3 seconds before pressing the function key.

⚠️ Caution: If the hardware switch is broken or jammed, do not attempt to repair it yourself, as this may damage the motherboard. Contact a service center.

2. Enable Wi-Fi via Windows settings

If hardware methods don't work, check your operating system settings. These instructions are for Windows 10 and 11 (for Windows 7/8, the steps are similar, but the menus may differ slightly).

Open Network parameters in one of the following ways:

• 🖱️ Right-click on the network icon in the tray (bottom right) and select "Open network and Internet settings".
• 🔍 Type in Windows search "Network parameters» and select the appropriate item.
• 📋 Click Win + I, then go to the "Network and Internet».

In the window that opens:

1. Select the "Wi-Fi» in the left menu.
2. Move the slider "Wireless network" to the " positionOn».
3. Click "Show available networks» and select your access point.

If the slider is grayed out and disabled, the issue may be with the drivers or a disabled adapter. Proceed to the next section.

3. Checking and installing drivers for the Wi-Fi adapter

The absence or incorrect operation of drivers is one of the main reasons why Wi-Fi does not turn on. Lenovo B50-70 Typically one of three types of adapters is used: Broadcom, Realtek or IntelTo find out the exact model:

1. Click Win + X and select "device Manager».
2. Expand the branch "Network adapters».
3. Find the device with the words "Wireless», «Wi-Fi" or "802.11" in the title.

If a yellow exclamation mark appears next to the adapter, the driver is not working properly. Download the latest version from the official Lenovo website:

• 🌐 Go to Lenovo support page.
• 🔍 Enter your laptop model (B50-70) or use automatic detection.
• 📥 In the section "Drivers and software" Select your OS and download the driver for "Wireless LAN».

After installation, restart your laptop. If the driver does not install, try uninstalling the current one through Device Manager (right-click → "Remove device”), then update the hardware configuration (Action → Update Configuration).

⚠️ Important: Never download drivers from third-party websites—they may contain viruses or outdated versions. Use only official sources: Lenovo, Intel, Broadcom, or Realtek.

4. Enable the adapter in Device Manager

Sometimes the Wi-Fi adapter is disabled at the system level. To enable it:

1. Open device Manager (as in the previous section).
2. Expand "Network adapters", find your Wi-Fi module.
3. Right click on it and select "Engage" (if there is such an option).

If the item "Engage"No, but the adapter is grayed out, try:

• 🔄 Click "Update driver» (automatically).
• 🗑️ Remove the device and restart the laptop - the system should reinstall the driver.

For models Lenovo B50-70 with adapters Broadcom Additional configuration in the BIOS may be required (see next section).

5. BIOS setup: enabling the wireless module

In rare cases, the Wi-Fi adapter may be disabled at the BIOS level. This is relevant if you recently updated the BIOS or reset its settings. To check:

1. Restart your laptop and press F2 (or Del, Fn + F2) to enter BIOS.
2. Go to the section "Advanced" or "Configuration».
3. Find the parameter "Wireless LAN», «Wi-Fi" or "Onboard Wireless" and set the value to "Enabled».
4. Save changes (F10) and reboot.

On some BIOS versions Lenovo B50-70 This parameter may be located in the "Security"If you are unsure of what you are doing, it is best not to change other settings - this may cause the system to crash.

⚠️ Warning: Incorrect BIOS settings may render your laptop inoperable. If you are unsure, write down your current settings before making any changes or consult a specialist.

What to do if you forgot your BIOS password?

If you have set a BIOS password and have forgotten it, the only way to reset it is to physically remove the CMOS battery on the motherboard (requires disassembling the laptop) or contact a service center. Lenovo B50-70 The battery is located under the bottom cover, next to the RAM.

6. Troubleshooting: When Wi-Fi Won't Turn On

If none of these methods help, the problem may be hardware-related. Here are some signs of a faulty Wi-Fi module:

• 🚫 The adapter is not displayed in Device Manager even after installing the drivers.
• 🔌 The Wi-Fi indicator does not light up when I press the power button.
• 🔄 The laptop does not “see” any network, although other devices connect normally.

In such cases:

1. Try connecting an external USB Wi-Fi adapter - if it works, the internal module is faulty.
2. Check if the module antenna is loose (disassembly is required). Lenovo B50-70 The antennas are connected to the mini-PCIe module with two thin cables.
3. Contact a service center for diagnostics. The cost of replacing the module typically does not exceed 1,500–2,500 rubles.

If your laptop is under warranty, do not disassemble it yourself—this will void the warranty.

7. Alternative ways to connect to the Internet

If Wi-Fi still doesn't work, you can use other connection options:

• 🌐 Ethernet cable: connect your laptop to the router via the port RJ-45 (network cable connector on the side panel).
• 📱 USB modem: use your smartphone in modem mode or a purchased 3G/4G modem.
• 🔄 Powerline adapter: transmitting the Internet through electrical wiring (useful if the router is far away).
• 🖧 External Wi-Fi adapter: USB device costing from 500 rubles (for example, TP-Link TL-WN725N).

For Lenovo B50-70 It is better to choose adapters with support USB 2.0 (Ports on the laptop are blue). Check compatibility with your version of Windows before purchasing.

If you're temporarily connected via cable, be sure to download the drivers for your Wi-Fi adapter so you can restore your wireless connection later.

Lenovo B50-70 Wi-Fi FAQ

My laptop can't see any Wi-Fi networks, even though the adapter is turned on. What's wrong?

This may be due to:

• Incorrect router settings (SSID broadcasting is disabled).
• Interference from other devices (microwaves, cordless phones).
• Outdated adapter driver (try downloading it from the chip manufacturer's website, not Lenovo's).

Also check if your router has MAC address filtering enabled. If so, add your laptop's MAC address to the list of allowed MAC addresses.

Wi-Fi stopped working after a Windows update. What should I do?

Windows updates sometimes reset drivers or network settings. Try:

1. Roll back the adapter driver Device Manager (right click → «Properties» → «Roll back»).
2. Install the driver manually by downloading it from the Lenovo website.
3. Restore the system to a restore point before the update (Start → Settings → Update & Security → Recovery).

How do I find the MAC address of the Lenovo B50-70 Wi-Fi adapter?

There are several ways to view the MAC address:

• From the command line: press Win + R, enter cmd, then run the command

  ipconfig /all

  and find the line "Physical address» for wireless adapter.
• In the network settings: Start → Settings → Network & Internet → Wi-Fi → Desired network → Properties.
• On the sticker under the battery (if MAC is indicated).

Is it possible to replace the Wi-Fi module on the Lenovo B50-70 with a more powerful one?

Yes, but with some reservations:

• The module must be compatible with the connector. mini-PCIe (or M.2 in some modifications).
• Supported by the current BIOS version (not all modules will be recognized).
• Have antenna connectors of the same type (usually IPEX MHF4).

Popular upgrade options: Intel 7260, Intel 8260 (with Wi-Fi 5 support) or Broadcom BCM94360Before purchasing, check if there are drivers for your OS.

My laptop connects to Wi-Fi, but the internet isn't working. What should I check?

The problem can be at different levels:

1. 📡 Router: reboot it, check if it distributes IP addresses (DHCP).
2. 🖥️ Laptop:
   • Run network diagnostics: right-click on the Wi-Fi icon → "Troubleshooting».
   • Check your IP settings: in the command line, run

     ipconfig /release

     , then

     ipconfig /renew

     .
   • Disable VPN or proxy if used.

🌐 Provider: Call support - the problem may be on their end.