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From CBS Interactive: Drivers are software that helps the system communicate with the installed hardware devices, like video cards, monitors, printers, and more. Without these drivers, the system will not be able to distinguish between a video card and a mouse. Most of these drivers are installed along with the operating system. Over time drivers become outdated, resulting in poor system performance and limited hardware functionality. It is very important to update the drivers on your system from time to time. To do so manually is a tedious task. You first have to determine the exact make and model of the hardware device, then go to the manufacturer website to download and install the most recent and updated version. Most of the time you will have problems finding the right driver for your computer, or the one you install may be incompatible.