ANSWERS: 1
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Did it work before set up how it is? Have you changed anything since it worked? I hate to ask the obvious, but have you checked all the connections to make sure all the power cords are securely plugged into the PC, monitor and wall? If ALL that is the case, and everything is properly plugged, it's a hardware problem most likely. It could be your monitor is dead and the box is fine. It also could easily be your motherboard or your power supply - or any number of almost anything else.
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