My fiance hooked up my Dell desktop monitor to his laptop to do some work. I came home later, turned on my computer and saw some message on the monitor that reminded me that he had disconnected it. Without powering anything down I plugged the blue and white plugs back into my CPU. I then heard the same quiet "poof" that I normally hear from the speakers (attached to the monitor) when I power down the computer. The monitor was dark and I pressed its power button which was glowing with the orange "power save" light. I could not get the monitor to turn on. I restarted the computer to see if that would fix my problem but it did not. Did I blow out the monitor or maybe the video card?