I am having the same problems with the vertical lines. I currently have about 6 lines on my screen. They are always visible no matter where I go or what I do.
Hello I run in the same problem, about 5 lines a half cm wide and when I did start up I changed the video ram to Uma and the ati card to uma + aticard giving it 128mb more and now the lines are gone. I hope it did help. regards JP
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The video card (built-in on the motherboard) maybe faulty or the LCD screen is faulty. Connect an external monitor to the video port of your laptop, power up the monitor first then boot up your laptop. If the video card id OK then the laptop will automatically divert the video to the external monitor. Then the problem is a faulty LCD screen. If the external monitor also displays black vertical lines then you have a faulty video card and since it is part of the motherboard it is impossible to fix.
Connect an external monitor to your laptop. If the problem appears only on the display of the laptop and not on the external monitor in the same time that means the video card is ok and the problem could be : the screen of the laptop or the invertor or the cable that attaches the screen to the mainboard. Have it checked by a professional.
Try connecting an external monitor to the your laptop and see if the vertical line is also present on the monitor. If the monitor display is fine, then your laptop’s LCD display panel is defective. If the monitor also displays the vertical line, then your problem is with either the video card or motherboard located inside your laptop.Not sure if the Compaq Presario has an external monitor plug, but if it does the above procedure can be applied to that one as well.
This is usually a screen problem and cannot be fixed however to verify if this is from the screen or from the video card you can connect a normal monitor to the back output connector of your laptop and check the display on the external screen.
This will tell you if it is the video card on the board or the actual screen. In either case it would be a hardware issue.
In answer to your question. It may be a screen problem. as the screen has a Matrix of vertical and horizontal line configuration.
I,d suggest trying the laptop/computer on an external monitor or screen. if it works fine on an external. then it could be assumed that the TFT Panel or invertor has a fault.
if the picture/display still has vertical lines on an external monitor, then the fault may lie, with the Mainboard.
Process of elimination, before spending any Money :)