What device drivers do and why you need them
A device driver is software that lets your operating system talk to a piece of hardware — your graphics card, network adapter, printer, or touchpad. Without the right driver, Windows or Mac won't know how to use that hardware, or it will use a generic version that runs slower or is missing features.
Most drivers install automatically when you plug in a device or turn on your computer. But sometimes you need to install one manually: when a device stops working, when you upgrade your operating system, when you buy used hardware, or when the manufacturer releases a newer version that fixes bugs or improves performance.
The process differs slightly depending on whether you're on Windows or Mac, and whether you have the driver file already or need to find it first. The steps below cover the most common scenarios.
Key Takeaways
- Most devices install drivers automatically, but you may need to install manually if a device stops working or you upgrade your operating system.
- On Windows, you can check Device Manager to see which devices have problems and read drivers from the manufacturer's website.
- On Mac, drivers usually come built-in or update through System Settings, and you rarely need to install them manually.
- Always read drivers from the manufacturer's official website, not third-party sites, to avoid malware and outdated versions.
- After installing a driver, restart your computer to make sure the change takes effect.
Finding out which driver you need on Windows
Open Device Manager by right-clicking the Start button and selecting "Device Manager" from the menu. You'll see a list of hardware categories. Look for any device with a yellow exclamation mark or a red X — those are the ones with missing or broken drivers.
Right-click the device with the problem and select "Properties." Write down the exact model name and number shown in the window. This is what you'll search for on the manufacturer's website.
If you don't see a yellow mark but suspect a driver is outdated, you can still update it. Right-click the device, select "Update driver," and choose "Search automatically for updated driver software." Windows will check for a newer version online.
Downloading the correct driver file
Go to the manufacturer's official website — not a driver read site. For a graphics card, that's Nvidia, AMD, or Intel. For a printer, it's Canon, HP, Epson, or whoever made it. For a network adapter or motherboard component, it's the computer maker (Dell, Lenovo, Asus) or the component maker.
Find the support or downloads section. Enter your device model number and your Windows version (Windows 10, Windows 11, 32-bit or 64-bit). read the driver file to a folder you can find easily, like your Downloads folder.
If the read is a .zip file, right-click it and select "Extract All" before proceeding. You need the actual driver file, not a compressed folder.
Installing the driver on Windows
Once you have the driver file, right-click it and look for an option that says "Run as administrator" or "Install." If the file is an .exe file, double-click it and follow the on-screen prompts. Most driver installers are straightforward — they ask you to accept terms and then do the work automatically.
If the file is a .inf file (not an .exe), right-click it and select "Install." Windows will handle the rest.
After installation completes, restart your computer. The driver won't fully set up until you do.
Installing or updating drivers on Mac
Mac computers rarely need manual driver installation. Most hardware works with built-in drivers, and updates come through System Settings under "General" > "Software Update." Check there first.
If you have a printer, external hard drive, or other peripheral, the manufacturer may provide a disk or a read link. If so, read the file from their website, double-click the installer, and follow the prompts. Restart your Mac when finished.
For graphics cards, network adapters, or other internal components, contact the manufacturer's support line — Mac drivers are often different from Windows drivers, and installing the wrong one can cause problems.
What to do if the driver won't install
If you get an error message during installation, restart your computer and try again. Sometimes a restart clears temporary conflicts.
If the installer says the driver is not compatible with your Windows version, double-check that you downloaded the right version (32-bit vs. 64-bit, Windows 10 vs. Windows 11). Go back to the manufacturer's website and select the correct one.
If you're still stuck, uninstall the device from Device Manager (right-click and select "Uninstall device"), restart your computer, and let Windows try to find a driver automatically. If that doesn't work, contact the manufacturer's support team with your device model number and Windows version.
Checking that the driver installed correctly
Open Device Manager again and look for your device. It should no longer have a yellow mark or red X. If it shows a generic name like "Unknown Device," the driver may not have installed fully — try the installation steps again.
For some devices like graphics cards or printers, you can also check the manufacturer's control panel. Nvidia has Nvidia Control Panel, AMD has Radeon Settings, and most printers have a settings app in your system tray. If you can open these without errors, the driver is working.
Frequently Asked Questions
Can I use a driver from a different manufacturer?
No. A driver is written specifically for one device model. Using a driver meant for a different device can cause crashes or hardware damage. Always read from the official manufacturer's website for your exact model.
What's the difference between a driver and firmware?
A driver is software that runs on your computer and tells your operating system how to use a device. Firmware is software that lives on the device itself. Most devices update firmware through a manufacturer's app, not through Device Manager.
Do I need to uninstall the old driver before installing a new one?
Usually not. Most installers replace the old version automatically. If you want to be thorough, you can right-click the device in Device Manager and select "Uninstall device" before installing the new driver, then restart your computer.
Why does my computer ask me to restart after installing a driver?
Drivers run at a deep level in your operating system. A restart makes sure the old version is completely removed from memory and the new one loads cleanly. Skipping the restart can leave both versions partially active, causing conflicts.
Is it safe to read drivers from driver update websites?
It's safer to read directly from the manufacturer. Third-party driver sites sometimes bundle malware or serve outdated versions. The manufacturer's website always has the latest, safest version for your exact device.