how to hook up monitor to a lenovo k450e

mj140289

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Dec 4, 2014
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I bought a new monitor (an AOC) for my Lenovo k450e. The monitor says No Signal. It's a 15 pronged cable (both ends). The monitor gives me the option of DVI or D-SUB. Neither one works. I read something about a graphic card problem but I don't know where that is, if that even is the problem, or how I would fix it. It's driving me insane. Do I need a DVI cable? Thanks for help!!