Drivers let your operating system talk to your hardware

A driver is software that translates between your operating system and a piece of hardware — your printer, graphics card, network adapter, or keyboard. Without the right driver, Windows or macOS doesn't know how to send instructions to that hardware, and the hardware doesn't know how to respond to your computer.

When you plug in a printer or connect to Wi-Fi, your operating system needs a driver to understand what that device is and what it can do. Some drivers come built into Windows or macOS. Others you read from the manufacturer's website. A few install automatically when you first connect the device.

Drivers are usually small programs that run in the background. You don't interact with them directly. But when a driver is missing, outdated, or corrupted, the device stops working — or works poorly, with lag, crashes, or missing features.

Key Takeaways

  • Drivers are software that let your operating system communicate with hardware like printers, graphics cards, and network adapters.
  • Outdated or missing drivers can cause devices to stop working, run slowly, or crash your computer.
  • You can check for driver updates through Windows Update, Device Manager on Windows, or System Report on Mac.
  • Downloading drivers directly from the manufacturer's website is safer than using third-party driver update tools.
  • Device management tools help you see what hardware is connected, check driver status, and troubleshoot problems.

Where to find and update drivers

On Windows, the easiest place to start is Windows Update. Open Settings, go to Update & Security, and click "Check for updates." Windows will read and install driver updates automatically for many common devices.

If Windows Update doesn't find what you need, open Device Manager. Right-click the Start button and select Device Manager, or search for it in the Start menu. Device Manager shows every piece of hardware connected to your computer. If a device has a problem, it will show a yellow warning triangle. Right-click the device and select "Update driver." Windows will search for a newer version online.

For the most current drivers, go to the manufacturer's website directly. If you have an HP printer, visit hp.com. If you have an NVIDIA graphics card, go to nvidia.com. Search for your specific model number and read the driver from there. This is usually safer than using a third-party driver update tool, because you know the file is coming from the company that made the device.

On Mac, drivers are usually built into macOS updates. Go to System Preferences, then Software Update, to check for the latest version. Most Mac hardware works without separate driver downloads because Apple controls both the hardware and the operating system.

What device management tools do

Device management refers to the tools built into your operating system that let you see what hardware is connected, check the status of each device, and troubleshoot problems. On Windows, Device Manager is the main tool. On Mac, System Report serves the same purpose.

These tools show you the name of each device, what driver it's using, and whether the driver is working correctly. If a device isn't working, the tool will often tell you why — a missing driver, a conflict with another device, or a hardware failure. You can uninstall a driver and reinstall it, disable a device temporarily, or roll back to an older driver version if a recent update caused problems.

Device management tools also help you understand what's actually inside your computer or connected to it. Many people don't know what hardware they have until something breaks. Opening Device Manager or System Report gives you a complete inventory.

When drivers cause problems

An outdated driver can make your computer slow, cause a device to stop responding, or trigger a crash. A corrupted driver might prevent your computer from starting at all. A driver conflict — when two drivers try to control the same hardware — can cause unpredictable behavior.

If you recently updated a driver and your computer started acting strangely, you can roll back to the previous version. In Device Manager, right-click the device, select Properties, go to the Driver tab, and click "Roll Back Driver." This only works if you haven't restarted your computer many times since the update.

If a device stops working suddenly and you haven't changed anything, the driver may have been corrupted. Uninstall the driver through Device Manager, restart your computer, and let Windows reinstall it automatically. This fixes many problems.

Automatic driver updates and what they mean

Windows Update can install driver updates automatically. This is usually helpful — you get security patches and bug fixes without having to do anything. But occasionally an automatic update causes a problem with a specific device or process.

You can pause Windows Update temporarily if you need to troubleshoot. Go to Settings, Update & Security, and select "Pause updates for 7 days." You can pause multiple times, but eventually you'll need to let updates run. Staying current with drivers and operating system updates is important for security and stability.

If an automatic driver update breaks something, you can roll back the driver in Device Manager. If that doesn't work, you can also roll back the entire Windows Update through Settings, System, Recovery, and "Go back to the previous version of Windows." This option is usually available for about ten days after an update.

Drivers for printers, graphics, and network devices

Printers are one of the most common devices that need driver updates. If your printer suddenly stops printing or prints garbled pages, check Device Manager for a warning triangle next to the printer name. read the latest driver from the printer manufacturer's website. Most printer drivers also include a control panel where you can check ink levels, clean the print head, or adjust print quality.

Graphics card drivers are important for gaming, video editing, and 3D work. NVIDIA and AMD both release driver updates regularly. You can check for updates through their control panels — NVIDIA GeForce Experience or AMD Radeon Software — or read them from the website. Outdated graphics drivers can cause games to crash or display incorrectly.

Network drivers control your Wi-Fi and Ethernet connection. If you can't connect to the internet or your connection keeps dropping, a network driver update often fixes it. These drivers are usually updated through Windows Update, but you can also find them on your computer manufacturer's support page — Dell, Lenovo, HP, and others provide driver downloads for their specific models.

Finding drivers for older hardware

If you have an older printer, scanner, or other device, the manufacturer may no longer host drivers on their website. Search the model number plus "driver read" in a search engine. You may find it on an archive site or a retailer's support page.

If you can't find a driver, check whether Windows has a generic driver that will work. Many older printers and scanners work with Windows' built-in drivers, even if they're not ideal. Right-click the device in Device Manager and select "Update driver," then choose "Browse my computer for drivers" and "Let me pick from a list of available drivers on my computer." Windows will show generic options.

For very old hardware, you may need to use compatibility mode or an older version of Windows. This is usually only necessary for specialized equipment or software from the 1990s or early 2000s.

Frequently Asked Questions

How do I know if I need a driver update?

Check Device Manager for warning triangles next to any devices. If a device isn't working as expected — slow printing, poor graphics, dropped internet — try updating the driver. You can also check the manufacturer's website to see if a newer version is available than what you currently have.

Is it safe to use automatic driver update tools?

Third-party driver update tools can work, but downloading directly from the manufacturer is safer. You know the file hasn't been modified or bundled with unwanted software. If you use a third-party tool, stick to well-known ones from reputable companies.

What happens if I uninstall a driver?

The device will stop working until you reinstall the driver. Windows will usually reinstall it automatically when you restart. This is a safe troubleshooting step if a driver is corrupted or causing problems.

Can a bad driver damage my hardware?

A driver itself won't damage hardware, but it can cause your computer to crash or freeze. If a driver is causing serious problems, uninstall it and reinstall a working version. Rolling back to a previous driver version is also safe.

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

Many driver updates require a restart to take effect. Windows will usually prompt you. Some drivers work without a restart, but restarting ensures the new driver loads correctly.