My gateway all-in-one computer has a hdmi in and I'm trying to plug my xbox 360 in there. It's worked before but it isn't working now. I have tried switching hdmi cables and that wasn't the problem. I also tried using another hdmi device on the gateway and it worked fine. I don't know what to do now. I also want to state that between the time that the xbox did work before I updated to windows 8.
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