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Troubleshooting Display Issues part 1 Let's now look at some common issues that occur with a monitor display and how to troubleshoot them. We begin with a discussion of VGA by defining what VGA means and how it works and some of the issues that can result and why. You'll learn about what happens when there is no image displayed on the screen, what happens when the video card isn't supported by the OS, overheating issues and what causes them, dim images and how tweaking the monitors settings corrects that, and what happens to cause dead pixels