I was working with my vaio laptop 2 days ago when i saw a vertical blue line on my display screen. Also, the display has a black border on the left and right sides of the screen. I tried to change the screen resolution but that did not help.
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Re: LIGHT BLUE VERTICAL LINE ON MONITOR
The vertical line is a bad pixel sensor at the edge of the screen, your screen has hundreds of vertical and horizonal pixel sensors. This is an indicator that the screen is going out and need replacing.
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Tryconnecting an external monitor to the laptop. You may have to select the videooutput to display on the external monitor by holding down the blue key and pressing the blue CRT/LCD (located on one of the keys, likeF8,F9, etc..). If the problem occurs on the external monitor with the batteryor AC power, then you have a problem with either the video card or motherboardin the laptop. If the problem does not happen using the external monitor thenyou laptop's LCD display is going bad.
Blue thin lines before it boots will rule out an operating system or driver fault. So it would appear something in the machine has failed.
Do you have a VGA monitor you can connect to it and see whether it shows the fault? This will show that if the fault also shows on the external monitor, it is likely an electronic fault on the main board, whereas if it works on the external monitor but not on the built-in monitor, my guess would be the cable that goes from the main board up through the hinge of the screen into it, or a connector, or an actual fault with the LCD display.
Windows booting normally once the display drivers were disabled indicates to me that Windows is no longer detecting the faulty display and therefore boots normally - possibly pointing to failed electronics in some way. It could even be corrupt BIOS that controls the video or something along these lines, though that's unlikely.
Good luck, either way it sounds like it's off to a computer repair shop. Is it under warranty?
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.
Try to connect a normal desktop monitor to the laptop (there will be one vga port where you can connect the monitor) and if you see those lines on external monitor as well then most probably video card has gone bad (you can try to reinstall video drivers in this case) if those lilnes are not there on external monitor then problem is with your LCD so if system is in warranty then get it replaced other wise get in touch with local compter shop and get it replaced.
Yes the problem is with your video system hardware, most likely. A repair may be possible as it could be the delicate ribbon cable that provides the video signal from a connection on the motherboard to the actual display screen. It could be the display screen. If some tech-savy friend with a good rep and an anti-static mat, good tools, and good lighting wants to assist you or check it for you, you may give that a try. Consider first that if you have or can get an extended warranty from the manufacturer then you can have a higher likelihood of a good resolution of the problem of the vertical lines that distract from viewing the display.
There can be 3 possible reasons for this 1)Screen connector cable is loose. You can try to re-seat it and see if works. 2)display card problem. Connect your laptop to an external monitor and see if the problem persists. If it does not then 3)You will need to get a replacement LCD screen. Hope this helps!