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Device drivers can also be a common source of software problems as well as hardware problems. Although drivers are related to hardware and other devices, they are software files that need to be correctly installed on a computer so that the computer's operating system can identify and communicate with some connected devices. If a user is having software problems related to devices connected to that computer, including video cards that are not displaying computer graphics correctly in a game or video, software testing of those devices is often the solution to those problems.
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