Power up aborts

The power-up starts, fan runs for about 1 second and then shuts down. I have taken out the memory, HD, battery and reseated them. I found something on another site about opening up the LCD video display to see if the connectors are all seated. Seems a loose connector gave the same set of symptoms. It was discovered by hooking up an external monitor. Laptop worked fine with monitor (video cable was disconnected from board). How do I go about opening up the LCD display?