What a driver is and why you need to install one

A driver is a small piece of software that tells your operating system how to talk to a piece of hardware — a printer, graphics card, network adapter, or external device. Without the right driver, Windows or Mac won't know how to use that hardware, even if it's physically connected.

Most of the time, your computer finds and installs drivers automatically when you plug something in. But sometimes you'll need to install one manually: the automatic search fails, you're setting up older hardware, or you need a newer version of a driver to fix a problem. The process is straightforward once you know where to look.

Key Takeaways

  • Windows Update and Mac App Store handle most driver installations automatically, but you can also download drivers directly from the manufacturer's website.
  • On Windows, go to Settings > System > Device Manager to see what hardware needs a driver and check for updates.
  • On Mac, System Settings > General > Software Update checks for driver updates, and most hardware uses built-in drivers you cannot update yourself.
  • Always download drivers from the official manufacturer website, not third-party sites, to avoid malware and outdated versions.
  • Restart your computer after installing a driver so the operating system can load it properly.

How to install a driver on Windows

Start by checking whether Windows has already found the driver. Plug in your device, wait 10 to 15 seconds, then open Device Manager. Press the Windows key, type "Device Manager", and press Enter. Look for your device in the list — if it has a yellow exclamation mark or question mark next to it, Windows recognizes the hardware but doesn't have the right driver yet.

Right-click the device and select "Update driver". Windows will offer two options: "Search automatically for updated driver software" or "Browse my computer for driver software". Choose the automatic search first — it checks Windows Update and sometimes finds what you need. If that fails, you'll need to download the driver yourself.

Go to the manufacturer's website. For a printer, visit HP, Canon, Epson, or Brother directly. For a graphics card, go to NVIDIA, AMD, or Intel. For a network adapter or other component, find the manufacturer's support page. Search for your specific model number — you can find this in Device Manager by right-clicking the device and selecting "Properties" — then download the driver file for your version of Windows (32-bit or 64-bit; check Settings > System > About to see which you have).

Once downloaded, go back to Device Manager, right-click the device again, select "Update driver", then choose "Browse my computer for driver software". Navigate to the folder where you downloaded the driver file and select it. Windows will install it, and you'll usually see a confirmation message. Restart your computer to complete the installation.

How to install a driver on Mac

Mac handles drivers differently than Windows. Most hardware — printers, external drives, keyboards, mice — uses drivers built into macOS, and Apple updates them through System Settings. Plug in your device, then go to System Settings > General > Software Update. If an update is available, install it and restart.

For some devices, the manufacturer provides its own installer. Printers are the most common example: HP, Canon, and Epson all offer downloadable printer drivers for Mac. Visit the manufacturer's website, find your printer model, and download the Mac version of the driver. Open the downloaded file (usually a .dmg or .pkg file) and follow the on-screen instructions. You'll typically need to enter your Mac password to complete the installation, then restart.

If you're unsure whether your device needs a separate driver, try connecting it first. If macOS recognizes it and it works, you're done — the built-in driver is handling it. If it doesn't work or shows an error, then search the manufacturer's website for a Mac driver for your specific model.

Where to download drivers safely

Always download drivers from the official manufacturer website. Never use third-party driver download sites like Driver.com, DriverPack, or similar services. These sites often bundle outdated drivers with unwanted software or malware, and they can cause more problems than they solve.

To find the right manufacturer website: search "[device name] official support" or "[device name] drivers". For example, "Canon printer official support" or "Intel graphics drivers". The official site will have a Support or Downloads section where you can enter your model number and operating system, then download the correct file.

If you're not sure which model you have, check the device itself for a label or serial number, or look in Device Manager (Windows) or System Information (Mac). Taking 30 seconds to find the right model number prevents you from downloading the wrong driver.

What to do if automatic installation fails

If Windows says "Windows could not find driver software for your device" even after searching, the device may be too old or too new for your version of Windows. Check the manufacturer's website to confirm they offer a driver for your specific Windows version. If they don't, the hardware may not be compatible with your system.

On Mac, if a device doesn't work after connecting it, check the manufacturer's website first. If they don't offer a Mac driver, the device may not be compatible with your version of macOS. Some older hardware was never updated for newer versions of the operating system.

If you've downloaded the correct driver and installation still fails, restart your computer and try again. Sometimes a restart clears temporary issues that block installation. If it fails a second time, check the manufacturer's support page for troubleshooting steps specific to that device.

Updating drivers you already have

On Windows, open Device Manager, right-click any device, and select "Update driver". Choose "Search automatically for updated driver software". Windows will check for newer versions and install them if found. You can also check individual manufacturer websites — NVIDIA, AMD, and Intel all have driver update tools you can download that check for newer versions automatically.

On Mac, go to System Settings > General > Software Update to check for macOS updates, which include driver updates. For manufacturer-specific drivers like printer drivers, visit the manufacturer's website and download the latest version for your Mac model, then run the installer.

You don't need to update drivers constantly. Update them if you're having problems with a device, if the manufacturer releases a security update, or if you're upgrading your operating system. Routine updates every few months are not necessary.

Troubleshooting after installation

If a device still doesn't work after you've installed the driver, restart your computer first. Many driver problems resolve after a restart because the operating system needs to reload the driver into memory. Wait for the restart to complete fully before testing the device again.

If restarting doesn't help, uninstall the driver and try again. On Windows, right-click the device in Device Manager and select "Uninstall device". Restart your computer, then reinstall the driver using the same steps you used before. On Mac, if the device came with an installer, look for an uninstall option in the Applications folder, run it, restart, then reinstall.

If the device still doesn't work, check the manufacturer's support page for known issues with your specific model and operating system version. Some devices have quirks or require specific settings to work properly. The manufacturer's troubleshooting guide will be more detailed than a general guide can be.

Frequently Asked Questions

Do I need to restart my computer after installing a driver?

Yes, in most cases. Restart your computer after installing a driver so the operating system can load it into memory and recognize the hardware. Some installations will prompt you to restart; others won't. Restarting ensures the driver is fully active.

What's the difference between a driver and firmware?

A driver is software that runs on your computer and tells the operating system how to use hardware. Firmware is software that lives on the hardware device itself. Most users never need to update firmware, but some devices like printers or routers occasionally release firmware updates. Check the manufacturer's website if you're having persistent problems.

Can I use the same driver on multiple computers?

Yes, if they're the same model computer with the same operating system. Download the driver on each computer separately from the manufacturer's website, or download it once and transfer the installer file on a USB drive. Don't share driver files from third-party sites — always get them from the official source.

What if the manufacturer no longer makes the device?

Check the manufacturer's website first — they often keep old driver downloads available even after discontinuing a product. If the manufacturer is gone or the website is down, search for the device model plus "driver" to see if other sites have archived it. As a last resort, Windows sometimes has generic drivers that work with older hardware, though functionality may be limited.

Is it safe to download drivers from Windows Update or the Mac App Store?

Yes, both are safe. Windows Update and the Mac App Store only distribute drivers from official manufacturers. They're actually the safest source because they've been verified by Microsoft or Apple. If Windows Update or Software Update finds a driver for your device, you can trust it.