OK, so I was told that the monitor on this computer I got was the problem. I checked it and the monitor works fine when I hook it up to my own tower. Its the tower it came with thats a problem. When I hook up the monitor the screen goes blank, so I disconnect it and it says the usual: No signal, check video cable. I was told it coluld be the video card but Im having trouble figuring out wahts up. Im kinda new at this. Can anyone help, please?