I just got the Rocketfish 4-Port HDMI Selector, and am attempting to connect both my Xbox One and my Windows 7 pc to my Dell computer monitor. The Xbox works fine (sometimes, sometimes not), and my computer will not work at all. All I get from the pc is three seconds of blackness, then the Dell logo (signifying that the monitor is connecting to the source), then a quick flicker of what the screen should be, then darkness again for three seconds, looping again and again. Could the selector be incompatible with my version of Windows? Could it be incompatible with my graphics card (EVGA GeForce 750Ti)? Or could there be another problem that I am not seeing?