Posted 28 September 2009 - 01:53 PM
Try plugging an enternal monitor into the video port on the back of the laptop and rebooting. If the monitor comes on, then as Garmanma stated, it's either the inverter or the backlight.
Another thing you can do to see if anything is on the LCD screen itself is to use a flashlight at about a 45 degree angle to the screen and see if you can see anything as far as graphics or your desktop.
Hope this helps,
"Admire those who attempt great things, even though they fail."