Hi the link did not come out good so here it is , you may have to copy and paste it into the address bar of your browser , http://www.nylaptopparts.com/diagnose-lcd-screen.html
David
February 2009
Hi you can check this link it explains how to diagnose a damaged lcd it might be of help. Diagnose lcd
In your case a line of any sort is a problem with the lcd screen and in most cases it will have to be replaced.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix notebooks/laptop pcs.