A:AnswerDid you plug the power chord into it? If you did, my suggestion is to return it, it's likely defective if the power chord is plugged in. It takes a 6 prong plug on the top right hand side.
A:AnswerThis card will work with any system provided you have room for it. It’s a very large card. I have a small case with a micro atx motherboard but many hard drive bays so I was able to squeeze it in. Get the dimensions and measure inside your case
A:AnswerIt shouldnt have any issues, as long as the motherboard supports pci gen 3 devices. It will need to be powered externally with a 6pin power cable though, as it is not passively powered by the motherboard :) let me know if you still have questions
A:Answeronly requires 350 watts or higher as well as on 6 pin power connector and it should disable the onboard graphics automatically when you plug in the card, you need a pci express slot though so make sure you have one.