KDS 17" LCD would go "black" and stay black with light green, not orange.
This was after 6months of operation, and one could turn the monitor off, leave it off for hours, then come back and get 5min-1hr out of it before it would go black again.

A replacement KDS LCD gave similar symptoms at 5months.
Sometimes black would instead by a fuzzy flicker which would persist for an hour or so then result in the final drop to black screen with green light.

All research I did and forums I posted in suggested that the monitor was just bad. Not sure if your problem is similar, but your LCD screen may be going out... though I do not know as much about portable computing vs desktop.