So, what exactly are device drivers?Drivers are files that bridge the gap between your hardware (printer, mouse, video display, sound card, etc) and your Windows operating system. It is because of drivers, your various devices are able to function.
What causes driver problems?Over time drivers often become outdated or corrupted. They also may not even be present to start with if you had to re-install Windows or add new hardware.
What are the symptoms of a driver issue?The obvious symptom is that your device just doesn't work: your sound card doesn't play music, your mouse doesn't move the cursor, etc. Symptoms of an outdated driver or one that is partially compatible may be less obvious. For example, your printer may support two-sided printing yet you are only able to print on one side because you don't have the correct version.