About a month ago i suddenly discovered these vertical lines on my screen. there was only one initially, red in colour and then the next day i noticed another one green in colour. i have no idea whatsoever as to what has caused this. i would be very grateful if i could get some help.
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It's the connector problems. If you know what to do, I can guide you:
First, remove the screw all over the LCD case, then you can see the connector, and flexible cables. Second, remove the keyboard unit(by removing all screw on the unit), after removed, find the edge of the LCD cables, then you can see the connector.
The solution: 1.Try clean this two connector with soft brushes ( paint brush is good ), by removing the cable first,then clean the flexible connector using wet tissue ( use the alcohol ).
2. If still exist, you need to replace the flexible with new ones.
Try connecting an external monitor to the Dell Inspiron 9300 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. Your responses are intended to improve the level of service provided. Please rate your experience. Thank You.
This could be a failure in several areas along the path from the video card to the monitor.
Being that there is not an issue across the entire monitor the video card should be considered a last resort check.
Usually this is caused by a loose connection between the LCD driver and the LCD panel itself. Sometimes light pressure applied near the affected line will clear it up. If that does then it is a connection between the LCD panel and the connector to the LCD driver at the panel's edge.
Not much can be done unless you have it repaired by a professional or you can take it apart yourself and apply a pad of some type inside the monitor's edge to apply the needed pressure once assembled.
if this line is there during boot up then it is a monitor problem usually. but if it is not then it is a problem with your windows files. you could try reinstalling your windows from the disks you were given with it? otherwise i will look into it. email me if you need more help. email@example.com