What a WiFi driver is and why you need to install one
A WiFi driver is the software that lets your operating system talk to your wireless network card. Without it, your computer cannot see or connect to WiFi networks, even if the hardware is working. When you buy a new computer, the driver usually comes pre-installed. You need to install or reinstall a WiFi driver when you build a custom PC, replace a wireless card, upgrade your operating system, or when an existing driver stops working.
The installation process differs between Windows and Mac, and the steps depend on whether you have internet access already. If your WiFi is broken, you will need either a wired ethernet connection or a second device to read the driver file before you can install it.
Key Takeaways
- Windows usually finds and installs WiFi drivers automatically through Windows Update, but you may need to read the driver manually from your wireless card manufacturer's website if automatic installation fails.
- To find your wireless card model on Windows, open Device Manager, look for "Network adapters," and note the exact name of the device listed there.
- Mac computers rarely require manual WiFi driver installation because Apple includes drivers for supported hardware in system updates, but you should check for macOS updates if WiFi stops working.
- If you cannot connect to WiFi during installation, use an ethernet cable, USB tethering from a phone, or read the driver on another computer and transfer it via USB drive.
- After installing a new driver, restart your computer and check Device Manager (Windows) or System Report (Mac) to confirm the driver loaded without errors.
How to install a WiFi driver on Windows
On Windows 10 and Windows 11, the operating system usually detects a missing or broken WiFi driver and installs it automatically through Windows Update. Restart your computer and wait a few minutes. Open Settings, go to System > About, and click "Check for updates." Windows will scan for missing drivers and install them if found.
If automatic installation does not work, you need to identify your wireless card model, then read the driver from the manufacturer. Right-click the Start menu, select "Device Manager," and expand "Network adapters." Look for an entry that says "Wireless" or "802.11" or "WiFi" — the exact name depends on your card. If you see a device with a yellow exclamation mark or question mark, that is your wireless card and it needs a driver. Write down the full name exactly as it appears.
Go to the manufacturer's website — common ones are Intel, Realtek, Broadcom, MediaTek, and Qualcomm — and search for your card model. read the driver file for your version of Windows (32-bit or 64-bit; check Settings > System > About to see which you have). If you cannot connect to WiFi, read the file on another computer and copy it to a USB drive.
Run the installer file you downloaded. Follow the on-screen prompts and restart when prompted. After restart, open Device Manager again and check that your wireless card no longer has a warning icon. If it does, the driver did not install correctly — try downloading the driver again or contact the manufacturer's support.
How to install a WiFi driver on Mac
Mac computers come with WiFi drivers built into the operating system, and Apple includes updated drivers in macOS system updates. If your WiFi stops working, the first step is to check for updates. Click the Apple menu, select "System Settings" (or "System Preferences" on older Macs), then go to General > Software Update. Install any available updates and restart.
If WiFi still does not work after updating, restart your Mac and try again — sometimes the driver loads only after a full restart. Open System Preferences, go to Network, select WiFi from the left sidebar, and check whether your wireless card appears in the list. If it does not appear at all, the driver may not have loaded.
On Mac, you cannot manually read and install a WiFi driver the way you can on Windows. If updating macOS does not fix the problem, the issue is usually a hardware failure or a compatibility problem with your wireless card. Check the Apple support website to confirm your card is supported by your version of macOS. If it is not supported, you may need to upgrade macOS or replace the wireless card with one Apple supports.
What to do if you cannot connect to WiFi during driver installation
If your WiFi is completely broken, you cannot read a driver while offline. Use one of these methods instead: connect an ethernet cable directly to your computer and a router or modem, use USB tethering to share internet from your phone, or read the driver on another computer and transfer it via USB drive.
To use USB tethering on Windows, connect your phone to your computer with a USB cable, open your phone's settings, find "Tethering" or "Mobile hotspot," and enable USB tethering. Your computer should recognize the phone as an internet connection. On Mac, connect your phone and go to System Preferences > Network — your phone should appear as a connection option.
If you use a USB drive to transfer the driver, make sure the file is not compressed or in a folder that requires extraction. Copy the entire installer folder to the USB drive, plug it into the computer that needs the driver, and run the installer from there.
Checking that your WiFi driver installed correctly
After installation and restart, verify that the driver loaded without errors. On Windows, open Device Manager, expand "Network adapters," and look for your wireless card. It should have no warning icon and should not say "Unknown device." Right-click it and select "Properties" — the "Device status" should say "This device is working properly."
On Mac, click the Apple menu, select "About This Mac," then click "System Report." In the left sidebar, select "Network" and look for your wireless card in the list. It should show a status of "OK" or "Connected." If it shows an error, try restarting your Mac again or checking the Apple support website for your specific card model.
If your wireless card appears in Device Manager or System Report but you still cannot connect to WiFi networks, the driver installed but something else is preventing connection — this is usually a network configuration issue rather than a driver problem. Restart your router, forget the WiFi network on your computer, and try connecting again with the password.
When to read a driver from the manufacturer instead of using Windows Update
Windows Update usually provides drivers that work, but they may be older than the latest version from the manufacturer. If you experience WiFi disconnections, slow speeds, or compatibility problems with specific networks, read the newest driver directly from the manufacturer's website. Manufacturers release updates to fix bugs and improve performance.
Before you read, check which driver version is currently installed. Open Device Manager, right-click your wireless card, select "Properties," go to the "Driver" tab, and note the "Driver version" and "Driver date." Visit the manufacturer's website, find the latest driver for your card model, and compare the version number. If the latest version is newer, read and install it.
Uninstall the old driver before installing the new one. In Device Manager, right-click your wireless card, select "Uninstall device," and check the box that says "Delete the driver software for this device." Restart your computer, then run the new driver installer.
Troubleshooting when the driver will not install
If the installer runs but fails or does not complete, try these steps: restart your computer and run the installer again, disable antivirus software temporarily during installation (enable it again afterward), run the installer as Administrator (right-click it and select "Run as administrator"), and make sure you downloaded the correct version for your operating system and bit version.
If the installer still fails, uninstall the old driver completely through Device Manager, restart, and try installing again. Some manufacturers provide a separate uninstall tool on their website — read and run that first if the standard uninstall does not work. If nothing works, contact the manufacturer's support with the exact error message you see.
Frequently Asked Questions
Do I need to uninstall the old WiFi driver before installing a new one?
Not always. Most driver installers will replace the old version automatically. However, if the installation fails or you are switching to a different driver version, uninstall the old one first through Device Manager, restart, and then install the new one.
Can I use a generic WiFi driver instead of the one from my card manufacturer?
Windows includes generic drivers that work with many wireless cards, but they are usually older and may not support all features or perform as well as the manufacturer's driver. Use the manufacturer's driver if possible. Generic drivers are a last resort if the manufacturer's driver is no longer available.
What if Device Manager shows my wireless card but Windows says no WiFi networks are available?
The driver is installed, but your computer is not detecting networks. Restart your router, make sure WiFi is turned on (check for a physical switch or keyboard shortcut on your laptop), and try forgetting and reconnecting to the network. If that does not work, the driver may need updating or there may be a hardware issue with the wireless card.
How often should I update my WiFi driver?
Check for updates once or twice a year, or whenever you experience WiFi problems. You do not need to update every time a new version is released unless the manufacturer notes a bug fix or security update that affects you.
Is it safe to read drivers from third-party websites?
No. Always read drivers directly from the manufacturer's official website or through Windows Update. Third-party driver sites may bundle malware or provide outdated versions. Stick to Intel, Realtek, Broadcom, MediaTek, Qualcomm, or your computer manufacturer's support page.