I have a HP P7-1420T with a AMD Radeon HD 7400 series graphics card. Im trying to hook up 2 Samsung T24C550 monitors to it. I have my main monitor plugged in through a HDMI cord and the second with a DVI cord with a VGA adapter on it. My computer recognizes the 2nd monitor but my monitor says nothing is hooked up when I look at the input source list.
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