How to connect a Lenovo B450 laptop to Wi-Fi: 5 proven methods + troubleshooting tips

Laptop Lenovo B450 — a popular model for work and study, but sometimes its Wi-Fi connection can be problematic. This is especially true if you've just reinstalled Windows, updated drivers, or experienced sudden network drops. In this article, we'll cover all the current Wi-Fi connection methods, including manual tuning, using function keys, and adapter diagnostics. We'll also cover common errors (such as when a laptop doesn't detect the network or constantly loses connection) and provide specific solutions.

Important: The connection procedure may differ slightly depending on the Windows version (10 or 11) and modification B450 (For example, B450-80 or B450-45). However, the basic principles remain the same. If your laptop is equipped with a Wi-Fi module Qualcomm Atheros or Intel Wireless, the instructions will fit perfectly.

Before you begin, make sure that the router is working stably (check the connection on other devices), and that the laptop itself is turned on. Wi-Fi adapterOften, the problem lies in a disabled module or outdated drivers—we'll cover these issues as well.

1. Connecting via the Windows Control Panel

The most standard method is to use Windows' built-in tools. This works if your Wi-Fi adapter is enabled but you're not connected to the network.

Open Control Panel (you can use the search in the system) and go to the section Network and Internet → Network and Sharing CenterIn the left menu, select Changing adapter settings. The item should be displayed here. Wireless network (or Wi-Fi). If it is not there or is grayed out, the adapter is disabled (read more about this in section 3).

To connect:

• 📶 Tap the Wi-Fi icon in the lower right corner of the screen (next to the clock).
• 🔍 Select your network from the list of available networks.
• 🔑 Enter the password (if the network is secured) and click Connect.
• ✅ Wait for the status Connected.

If the network is not displayed, try refreshing the list by clicking Refresh (the round arrow at the top of the list). Also, check if your network is hidden in your router settings (in this case, you'll need to enter the network name manually).

2. Using function keys

On Lenovo B450 Wi-Fi can be turned on/off using a keyboard shortcut. This is usually Fn + F5 or Fn + F7 — depends on the model. The key will have an antenna 📡 or a wireless network icon.

How to check:

1. Hold down the key Fn (in the lower left corner of the keyboard).
2. Press one of the function keys (F1–F12) with a Wi-Fi icon.
3. Wait for the notification about enabling/disabling the adapter.

If the combination does not work:

• 🔄 Try other combinations: Fn + F2 or Fn + F3.
• 🔧 Make sure that the Wi-Fi adapter is not disabled in the BIOS (more on this in section 5).
• 💡 On some models Lenovo There is a separate physical switch on the body (usually on the side).

3. Checking and installing Wi-Fi drivers

If your laptop doesn't see the network at all or the Wi-Fi icon is crossed out with a red cross, the problem is most likely in the drivers. Lenovo B450 most commonly used adapters are from Qualcomm Atheros or Intel.

How to install/update the driver:

1. Open device Manager (Win + X → Device Manager).
2. Expand the section Network adapters.
3. Find the device with the names Wireless, Wi-Fi or 802.11.
4. Right click and select Update driver → Automatic search.

If Windows does not find the driver:

• 🌐 Download it manually from Lenovo's official website (enter your laptop model) B450 in search).
• 💾 Select the driver for your version of Windows (32-bit or 64-bit).
• 🔧 Install it and restart your laptop.

Critical Information: On some Lenovo B450 models (for example, those with the Qualcomm QCA9377 adapter), the standard Microsoft drivers may not work. In this case, be sure to install the driver from the Lenovo website!

How to find out the bitness of Windows?

Open Settings → System → AboutIn the "Device Specifications" section, look at the "System Type" line (64-bit or 32-bit).

4. Diagnosing network adapter problems

If Wi-Fi turns on but doesn't connect to the network (or the connection keeps dropping), run Windows' built-in diagnostics:

1. Right-click on the Wi-Fi icon in the tray.
2. Select Troubleshooting.
3. Follow the wizard's instructions.

Typical errors and solutions:

If the diagnostics don't help, try resetting your network settings:

netsh winsock reset
netsh int ip reset
ipconfig /flushdns

After executing these commands, restart your laptop.

5. Checking BIOS settings and hardware switches

In rare cases, Wi-Fi may be disabled at the BIOS level. To check:

1. Restart your laptop and press when turning it on. F2 or Del (to enter BIOS).
2. Go to the section Advanced or Configuration.
3. Find the parameter Wireless LAN or Wi-Fi and make sure it's turned on (Enabled).
4. Save changes (F10) and reboot.

Also inspect the laptop case:

• 🔍 On some modifications Lenovo B450 There is a physical Wi-Fi switch on the side panel.
• 💡 If there is no switch, check if the orange indicator next to the keyboard is lit (indicating that the adapter is disconnected).

⚠️ Attention: Changing BIOS settings may affect system stability. Do not change other settings unless you are sure of their purpose.

6. Alternative connection methods

If Wi-Fi is persistently unavailable, try connecting to the internet temporarily using other methods:

• 🔌 By Ethernet cable (if the router is nearby).
• 📱 Through USB modem (smartphone in modem mode).
• 🖥️ With the help of external Wi-Fi adapter (plugs into USB port).

To connect via cable:

1. Connect the laptop and the router with a patch cord.
2. Windows will automatically receive settings via DHCP.
3. If the Internet does not appear, check if DHCP is enabled on the router.

External Wi-Fi adapter (eg. TP-Link TL-WN725N) is suitable if the built-in module is broken. Its drivers are usually installed automatically.

7. Frequently asked questions and solutions

❓ My laptop sees networks but won't connect—it says "Unable to connect to this network."

The problem may be with your router's security settings. Try:

• Change encryption type from WPA3 on WPA2-PSK.
• Disable MAC address filtering in your router settings.
• Set a static IP address for your laptop manually.

❓ My Wi-Fi has disappeared after a Windows update. What should I do?

The update may have reset the driver. Follow these steps:

1. Rollback driver to Device Manager (right button on the adapter → Properties → Rollback).
2. Installing the latest driver from the Lenovo website.

❓ How do I reset my network settings to factory defaults?

In Windows 10/11:

1. Open Settings → Network & Internet → Status.
2. Click Network reset.
3. Confirm the action and restart the laptop.

⚠️ After the reset, you will have to re-enter passwords for all networks.

❓ Is it possible to connect to Wi-Fi without a password?

Only if the network is open (unencrypted). Otherwise:

• Check the password with the router owner.
• Connect via WPS (press the WPS button on the router, then select the network on the laptop).

⚠️ Attention: If none of these methods help, the problem may be a hardware fault with the Wi-Fi module. In this case, contact a service center. Lenovo B450 Replacing the module costs 1,500–3,000 rubles (depending on the adapter model).