Last week my wife was messing around with my computer and hooking it up to our other monitor, during this process you have to turn the resolution down. So all was fine until the following morning, i turned it on and all i got was a black screen. I can see nothing from the moment i press the power button although i can hear when it logs into windows. From what i can tell she set the display at 600x400 or something to that nature, i've replaced the monitor lead, tried it on a plasma and three different monitors which all have the same outcome. All connections have been checked and at this point the only thing i can come up with is replacing the video card Grateful if anyone has help or ideas.