Question about PC Desktops
The 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.
You 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.
If 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.
If the display still doesn't work w/ a **known working** external monitor connected to it, then the issue is w/ the onboard video.
You can find manuals for your laptop HERE. However, I don't see a service manual there.
You can find HPs "Solving Problems" for "Display, Video and Graphics" HERE.
Resolving Problems w/ the Brightness of the Display
About LCD Panel Defects and Terminology
Display is Dim During or After Startup - Windows XP
Display is Dim During or After Startup - Windows Vista
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The parts listing for your computer can be found HERE, however, I don't see the monitor listed there for either of the models.
You can contact HP using the information found HERE.
You will need to provide them w/ the particular model no. you are referring to.
Pavilion DV622US [RP297UA] or [RP297UAR]
Posted on Apr 08, 2008
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