OK, so I'm using HDMI input, i replaced the cables, that's that not the issue. Everything is connected to the right input. When I turn on my computer it doesn't show anything, the monitor doesn't detect any signal. I even tried to connect my computer to another monitor and it seems to work fine. I even tried to connect the monitor to another device and the monitor seems to work fine. I noticed that when I disable my nvidia geforce gt730 driver, the monitor then decides to work. I even have my driver to the latest update, and still nothing. its just every time I enable the video driver, the monitor image disappears. This computer just has a problem with the monitor I want it to work on, its really frustrating. I even took out cmos battery and put back on, I even took out the ram hoping that might do the trick. But nothing. My computer is the HP Pavilion 550-077c Desktop PC - Intel Core i7-4790 3.6GHz 12GB. And the monitor im having difficulty connecting it to is, the HP 22cwa 21.5-inch Display. Thanks any help would be most appreciated.