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DV9233cl Black screen on power up

I've got a DV9233cl laptop part number: RP249UA#ABA.

I've got a problem where when I bootup there is no video on the screen.  I can see the backlight come on, but there is nothing displayed.  I've tried removing both hard drives, and tried each stick of ram individually, same problem.   At this point I'm thinking either video card or motherboard, any thoughts on troubleshooting?
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ccache
Asked:
ccache
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1 Solution
 
ccacheAuthor Commented:
Update:  It has a picture on the external monitor, will boot to the windows loading screen but has virtical green dashes.  However even the external monitor goes dark after the green loading bar is finished, I guess this could just be a resolution issue though.  The greenbars however make me think video card since it boots fine to the windows load screen.   Thoughts?
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MarkCommented:
Have you tried an external monitor to see if the video signal is being sent properly from the video card.
This sounds like a video cable issue. You might want to reseat the video cable on the motherboard connector to see if that helps.
Here is the video guides for removing parts for this model.
http://vsslfpro.zcce.compaq.com/plmcontent/NACSC/SML/results.htm?SID=7900391&MEID=A3AC0C8C-9B6A-470E-B425-27DB24476389
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MarkCommented:
That does sound as if the video subsystem on the motherboard is the issue. Since the video system is integrated on the motherboard it would mean replacing the motherboard.
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EirmanCommented:
It's either either
> the video element of your motherboard
> the ribbon cable between the motherboard and display
> the display itself

> Remove the battery and mains - reconnect and try again.
> Try connecting a regular monitor to the VGA output if you have one and boot up (or use svhs)
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ccacheAuthor Commented:
I haven't pulled it apart yet, but according to the stickers on the laptop it has a geforce 7600 go video card, is this on board or separate from the motherboard?
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MarkCommented:
From looking at the link for the removal videos I provided, the video looks to be integrated and not a separate video card.
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