flyvmc

I have a Dell as well insperion 9300 / B1300 w/ a 17" LCD. I notice just on line several weeks ago, then a few days later two lines now there are 4 lines running verticle down the left side of the screen. I did a check on the LCD and I got all the colors and bars then hooked it up to an external LCD and there were lines in the external screen. I am guessing that my mother board is going. I would say the video card but they are integrated. Am I correct in my assumption? I know the old saying about ***_u_ming but I was an O level aviation electronics tech in the Navy and w/ the process of elimination that would be my guess. I know mother boards for the B1300 run about $280. "What say ye?"