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I have hp pavilion dv6226us and when booted up the screen stays dark. You can see display only if you shine a light onto the screen. I tried to turn up the brightness and did't have any luck.


Answers :

Hi AC9746
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\015\012The 1st thing to do is connect an external monitor to your computer. Connecting an external monitor to it will very quickly point us in the direction we need to go in troubleshooting the issue.
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\015\012You may need to close the "lid" of the computer in order for the display to show up on the external monitor. Hopefully this will work since you're unable to see the display properties in order to select the external monitor.
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\015\012If the display works w/ an external (**known good**) monitor connected to it then the issue is w/ the laptop's monitor. The next course of action is most likely to contact HP for warranty repair (if your computer is in warranty) or to replace the monitor.
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\015\012If the display still doesn't work w/ a **known working** external monitor connected to it, then the issue is w/ the onboard video.
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\015\012You can find manuals for your laptop HERE. However, I don't see a service manual there.
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\015\012You can find HPs "Solving Problems" for "Display, Video and Graphics" HERE.
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\015\012Resolving Problems w/ the Brightness of the Display
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\015\012About LCD Panel Defects and Terminology
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\015\012Display is Dim During or After Startup - Windows XP
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\015\012Display is Dim During or After Startup - Windows Vista
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Please, let me know if this response was a "FixYa" (enabled you to successully diagnose your problem) or "Helpful" for you or, of course, if you have additional questions, etc on this topic.
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\015\012If the solution I provided you w/ resolved or enabled you to diagnose your problem or answered your question, a "FixYa" would be most appreciated. :)
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\015\012It is best to wait until the problem has been resolved b4 scoring the experts who participated in solving your problem or answering your question.
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\015\012Very often it will take more than one exchange of information between you and an expert in order to resolve your problem.
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\015\012If a proposed solution doesn't work for you, please, don't rate it yet. Instead, post back here letting us know and we'll continue to work w/ you until we find a solution or we're able to diagnose the problem for you.
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Thank you
BJ
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\015\012The parts listing for your computer can be found HERE, however, I don't see the monitor listed there for either of the models.
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\015\012You can contact HP using the information found HERE.
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\015\012You will need to provide them w/ the particular model no. you are referring to.
\015\012Pavilion DV622US [RP297UA] or [RP297UAR]
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The VGA card or the VGA driver is not properly installed,perhaps.Try reinstalling the driver.
\015\012If you suspect the monitor brightness controls then try fiddling with them untill the brightness is good enough.
\015\012Check monitor cable also(VGA).
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