How to check if your computer has a Wi-Fi adapter: detailed instructions

Have you bought a new laptop or built a PC but can't connect to a wireless network? Or has the icon suddenly disappeared? Wi-Fi in the tray, although everything worked before? The first thing you need to do is check the presence and functionality of the Wi-Fi adapterWithout this module, connecting to the network over the air is simply impossible, even if the router is working properly and distributing internet.

In this article we will look at All current methods for diagnosing a Wi-Fi adapter on Windows 10 and 11, including verification through device Manager, Command line, BIOS/UEFI and even a physical inspection. You'll learn how to distinguish between a missing adapter and software failures, and what to do if the system doesn't detect it. The instructions are suitable for any device—from budget laptops Lenovo or Acer to gaming PCs with discrete modules Intel AX200 or Qualcomm Atheros.

Before you begin testing, make sure the problem isn't with your router: try connecting to the network from another device (smartphone, tablet). If the internet works, the problem is definitely on your end. Also, check if the router is turned on. hardware Wi-Fi switch (often this is a key Fn + F2 or a separate toggle switch on the body).

1. Checking through Device Manager

The fastest way to find out if your system has a Wi-Fi adapter is to look in device ManagerThis tool displays all connected components, including network cards. If the adapter is present but displays with an exclamation point, the problem is with the drivers.

To open Device Manager:

• 🖱️ Right-click on the button Start (or a combination Win + X) and select the appropriate item.
• 🔍 In the Windows search bar, type device Manager and open the application.
• 📋 Alternatively: click Win + R, enter devmgmt.msc and confirm Enter.

In the window that opens, find the section Network AdaptersOpen it and look for devices with the words: Wireless, Wi-Fi, 802.11 (wireless communication standard), or brand names: Intel, Qualcomm Atheros, Broadcom, Realtek, Mediatek. For example: Intel(R) Wi-Fi 6 AX200 160MHz or Realtek RTL8821CE Wireless LAN 802.11ac PCI-E NIC.

Network Adapters Section|Devices with the words Wireless/Wi-Fi/802.11|Brand names (Intel, Qualcomm, Realtek)|No exclamation marks next to the adapter-->

If there are no wireless adapters in the list, this may mean:

• 🔌 The adapter is physically missing (not installed in PC or broken in laptop).
• 🔄 Disabled in BIOS/UEFI (relevant for some motherboards).
• 🚫 The driver is not installed (the device exists, but the system “doesn’t see” it).

2. Command line: checking network interfaces

If Device Manager doesn't give you a clear answer, use Command lineThis method will show all network interfaces, including hidden or disabled ones. Run the command prompt as administrator (right-click on Start → Command Prompt (Administrator)) and enter:

netsh wlan show drivers

In the results, look for the line Host Name (adapter name) and Radio Type. If the latter indicates 802.11n, 802.11ac or 802.11ax — the adapter is present and supports Wi-Fi. If the command returns an error No wireless interfaces found — there is no adapter in the system or it is disabled.

Another useful command:

ipconfig /all

In the results, look for the section Wireless LAN adapterIf it is not there, the adapter is missing or faulty. If it is there, the status Media disconnected — check your router drivers or settings.

sc config Wlansvc start= auto
net start Wlansvc

After restarting your PC, please check again.-->

3. Physical inspection: where to look for a Wi-Fi adapter

If software methods do not produce results, it is possible that the adapter physically absent or damaged. In laptops, the Wi-Fi module is usually built into the motherboard, while in desktop PCs it can be connected as follows:

• 🖥️ PCIe card (plugs into a slot on the motherboard, looks like a small board with antennas).
• 🔌 USB adapter (external device connected to the USB port).
• 🔧 M.2 module (in laptops and some PCs, similar to SSD but smaller).

To find the adapter in laptop:

1. Turn off the power and remove the battery.
2. Remove the back cover (you may need a screwdriver).
3. Look for a small circuit board with two antenna wires (usually black and white) connected to it. The board should be labeled: Intel, Atheros, Broadcom etc.

IN desktop PC The adapter can be:

• In the slot PCIe x1 (small connector on the motherboard).
• Built into the motherboard (rare, usually only in mini PCs).
• Connected via USB (external adapter).

4. Check in BIOS/UEFI

In rare cases, the Wi-Fi adapter may be disabled at the BIOS levelThis is relevant for some motherboards (for example, ASUS or Gigabyte with function Wi-Fi GO!) or corporate laptops where administrators disable wireless modules for security reasons.

To enter BIOS/UEFI:

1. Restart your PC and press the BIOS entry key (usually Del, F2, F12 or Esc - depends on the manufacturer).
2. Find the section Advanced, Onboard Devices or Wireless.
3. Look for parameters like: Wi-Fi, WLAN, Wireless LAN, Onboard Wi-Fi.
4. Make sure there is a value opposite Enabled.

⚠️ Attention: Changing BIOS settings may cause system instability. If you are unsure about what you're doing, skip this step or contact a specialist.

5. Checking via System Information (msinfo32)

Another built-in Windows tool is the utility msinfo32, which collects detailed information about hardware and software. To open it:

1. Click Win + R, enter msinfo32 and press Enter.
2. In the left menu, go to the section Components → Network → Adapter.
3. In the right window, look for mentions Wireless, Wi-Fi or 802.11.

If the adapter is present, you will see its name, PCI ID (For example, PCI\VEN_8086&DEV_2723) and status. This identifier can be used to find the driver on the manufacturer's website if Windows was unable to install it automatically.

Example output for the adapter Intel Wi-Fi 6:

6. Diagnostics using third-party programs

If Windows' built-in tools don't provide a clear answer, use specialized utilities. They will show not only the presence of the adapter, but also its technical specifications: supported standards (802.11ac, Wi-Fi 6), maximum speed, chip manufacturer and even temperature.

Popular diagnostic programs:

• 🛠️ HWiNFO — shows complete hardware information, including network adapters. Look for the section Network.
• 📊 AIDA64 — in the section Devices → Windows Devices All network cards are displayed.
• 🔍 Speccy (from the developers CCleaner) is a simple utility with a section Network.
• 🌐 WirelessNetView (from NirSoft) — specializes in Wi-Fi networks and adapters.

Adapter: Realtek RTL8821CE Wireless LAN 802.11ac PCI-E NIC
Vendor: Realtek
Device ID: 10EC-8821
Subvendor: AzureWave (1A3B-2887)
Driver: 2026.0.10.104 (2023-11-15)
Standards: 802.11a/b/g/n/ac
Max Speed: 867 Mbps (80 MHz, 2x2 MIMO)