Problem with HP Compaq nx 9010 screen

Hello all,

I have a HP Compaq nx 9010, the screen has gone completly dark, i can just make out the windows logon screen, the FN keys for the brightnes controls do not make a difference, but when i plug in an external monitor i have no problem seeing it, could it be a loose connection or do i need a new screen?

Please any help would be appreciated.
 
The LCD backlight has gone bad or there is a broken wire connection to the inverter or elsewhere to the LCD panel... Take the laptop in for service. The LCD panel itself should be ok
 
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