Display goes black

Hello,
Sir, due to curiosity i opened my laptop hp pavilion dv4,now after reassembling the cabinet i am facing a display trouble.display of my laptop goes black whenever i start it...caps lock & scroll lock indicator blinks during this time.even by chance it gets start it goes dark due to normal shake.i think its a hardware problem .help me pls.
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More about display black
  1. Sounds like one of the connectors is not.. connecting properly. I believe you may have to do that again.
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