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I have 2 solid vertical bars on my HP laptop monitor. Sometimes when booting up I can see thru the bars. Currently cannot see thru. I am running windows XP. Is this a hardware or software problem and potential free resolutions and cost on other. Thanks

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Try connecting a regular computer monitor to your laptop using a VGA cable. If it also displays the lines, the problem is with the video card. If it doesn't, it's with the LCD monitor.

If the problem is with the video card, the motherboard must be replaced.

If the problem is with the LCD, the LCD itself will be replaced.

Not sure how much replacement of parts will cost. Usually depends on the technician that will be replacing the parts. Most technicians know where to get the stuff cheap.

Hope this helps! :D

Posted on Sep 08, 2010


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HP Dv7-1130us LCD screen displaying vertical blue line

the actuall screen LCD is bad.
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the service tag show this, post that and we go to the HP parts surfer and look it up.

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No desktop black screen

If you have a monitor for a desktop connect the laptop to it and use the correct function button to change to an external monitor if is shows you more than likely have a bad back light or screen. If it doesn't show on the external then you can figure your video adapter has gone bad. I have had a lot of HP laptops come thru my shop where they power on but only have a black screen. It is caused by the solider breaking down and the connections coming lose. The only thing you can do at this point is run the check I have told you about and then find somebody to rework the solider on the board.
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Vertical black bars screen

Try connecting an external monitor to the 15 VGA (video) plug on the laptop and see if it displays properly on the monitor. You may have to direct the video from the laptop to the monitor by holding down the blue <FN> (key next to the space bar) and then press down the <F8> key.
If the display on the external monitor is correct, then you either have a problem with the laptop's LED display screen or cable that connects the LED to system board. Here is a link for the service manual:

Feb 16, 2013 | Dell Inspiron 9100 Notebook

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Vertical lines display

LCD Screen needs to be replaced more than likely. You can take the lcd screen apart and reseat the lcd cable by pulling it out and putting it back. You can also remove the cables from the Lcd Inverter then put them back. Sometimes it was just that they needed reseating.

You could plug an external monitor into your laptop's vga port and boot up an see if the image is clear on the external monitor. If so that means the video card is ok, but the monitor has issues.

Mar 26, 2012 | HP Pavilion dv6000z Notebook

1 Answer

The screen on my hp pavilion model f3378h goes blank and all i get are lines that run vertical.

Connect an external monitor to your laptop and see if you still have the vertical lines. If the vertical lines are not visible on an external monitor you more than likely have a problem with your notebooks LCD panel.

If you still have the lines you may be having a problem with your graphics card/chip.

You can also see if the problem happens when you boot to safe mode. If you can get into safe mode you can try reinstalling the video driver for the laptop.

Your last resort would be to try a reinstall of Windows to see if that clears the issue (if all else fails).
-- or --
In the end you may need to contact HP support. I would check to see if your laptop is still under warranty.

Based on the information you have given me it sounds like a hardware issue.

Apr 12, 2011 | Computers & Internet

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Vertical bar about 3/4" from top to bottom of monitor

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If the lines are only on your laptop screen, it is generally the display IC on the LCD panel.

When plugged into an external monitor and you still see the lines, it is the video memory on your laptop.

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1. try connecting laptop to an external monitor and check if this vertical dark gray bar appears. if yes it means video is the problem. you need to boot in safe mode then uninstall the video driver. boot to notmal mode then download and install the latest video driver. if still same problem then replace video card. if video is built in with motherboard you need to replace motherboard.

2. when the vertical dark gray bar did not appear in the external monitor then it means issue is with the LCD panel. Do this turn off laptop. press and hold D key then press Power button at the same time or Press and hold on the Fn key then Power button check if the test will run. Color displays full screen when you keep pressing on N key when the colors appears check the vertical dark gray bar if still exist in the test, this means LCD panel and LCD cable needs to be replaced.

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Definitely ask HP support. They should be familiar with this wierd problem.

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