Question: what exactly is a Video Controller ?? I my device manager it says I'm missing a video controller. I'm guessing that's why I can't watch DVD's ?  Could someone please explain what exactly that is ?

Answer: A Video Controller or Graphics Processing Unit or GPU (also occasionally called Visual Processing Unit or VPU) is a dedicated graphics rendering device for a personal computer or game console. Modern GPUs are very efficient at manipulating and displaying computer graphics, and their highly-parallel structure makes them more effective than typical CPUs for a range of complex algorithms.
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