HI guys, i'll be quick.
I'm trying to restore some notebooks and give them to people in need.
I have boot problems with XPS1530, blank screen , no backlit, nothing happens when power on , except laptop itself is ON, but nothing on screen. 

I preformed D + POWER test, screen is OK, show colors and backlit i s OK.
I performed Fn + POWER test, NO beeps, and the 3 LEDs are :
NUM-blink | CAPS-solid | SCR-solid

Any Advice about that errr code ?