Updating drivers can marginally speed up your computer, add new features to your computer, and fix the bugs found in older drivers. Update drivers only if a device has a problem with the existing driver or if the driver is not working, since it is also possible to harm your computer by updating its drivers for no reason.
A driver is a small piece of software that allows your computer to communicate with hardware devices. Without a driver, a device you connect to your computer – for example, a mouse or an external hard drive – won't work properly.
Each driver is specific to a certain piece of hardware or a certain model of it. Every external device plugged into the computer requires a driver. Drivers are designed to work with specific operating systems; if you update your operating system, you may also need to update its drivers.
Drivers ensure that your system remains stable and operates smoothly. A corrupted driver disrupts communication between the supported devices until it is updated.
Updating your driver is also recommended if the operating system notifies you of an update. To avoid infecting your computer with malware, always download drivers from original manufacturers and other official sources.