Motherboard screen connector pins

hi, i have a question about my compaq nc6220 laptop.
the connector pinouts on my motherboard where the lcd screen end connects into; one of the pins is missing. i think its 20 pins, and the pin that is missing is on the 2nd row, 3rd one from the right. my screen was working fine and now its just gone really dim. i very much doubt its the inverter or the backlight of the screen as it is a new screen and i was upgrading to vista and then the screen went all dim.
when i press down on the right hand side of the lcd cable the screen lights up, im assuming this pinout on the motherboard is required, so is it possible to get a connector pin and replace it or do i need to get a new motherboard? whcich does seema little stupid tbh.
your advice is appreciated. im assuming their are some pins that are grounded on the motherboard and not really required, is it not possible to just take this one out and put it in the place of the one that is required?

Please post again in hardware section, you'll have better answers.
I'm assuming you are hardware knowledge, as for not all pins are used.
You did the troubleshoot correctly per your statement "when i press down on the right hand side of the lcd cable the screen lights up,", I'm guessing you have have cable issue.
Anyway, please ask again in hardware section.
Pavilion DV2922TX, XP-SP3 32bit, Intel T5750 2.0Ghz, Nvidia Geforce 8400M GS with 128MB, 4GB 667 DDR2, 250GB HDD

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