I just purchased a brand new monitor today for my Acer Desktop and everything was working well. However it changed when I decided to check the buttons on the monitor. Unfortunately I had no idea what button was what since it was not labeled, so I winged it and then suddenly I get this "DVI No Signal" on my screen. So I decided restarting it, still there. Took all of the cables out, still there. After 20 times, I became frustrated and not sure what to do. I don't think it's my video card since it works fine. Does anyone know what I can do to resolve this problem>?