Laptop screen display problems occur for many different reasons. Some issues need professional attention, but others can be repaired by the owner. A screen that displays vertical lines often means that there is a problem with the video cable connection to the LCD screen, or the cable itself. In order to repair this problem, the display screen must be disassembled. If you feel confident that this task is within your realm of expertise, follow the steps below to remove your laptop's LCD panel and fix the vertical line problem on your laptop screen.
Remove the rubber seals covering the screws on your screen's outer frame using a flat-head screwdriver. Remove the screws, then carefully pry the frame from the screen using your fingers. Release the plastic latches holding the framing in place, then remove.
Remove the screws holding the screen to the support brackets. You will see the video cable, which is attached to the back of the LCD screen. Try unplugging and reconnecting this cable, making sure that it is seated properly. If the problem was the connection, this may solve the vertical line issue.
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Turn on the laptop. Move the video cable around a bit, without moving or touching the screen. Check the screen to see if the display image changes at all. If it does, the problem may be with the cable itself.
Move the laptop screen around to see if this affects the display. If so, the problem is most likely with the LCD screen itself, not the video cable. Replacing the screen will be necessary.