Nothing appears on screen, have not plugged into external Monitor but when I adjust the brightness the tones of grey change from light to dark so I'm thinking something is keeping windows from getting started.
Mine does the same thing. I connected it to an external monitor and it works fine but nothing from the "inbuilt" monitor. Someone mentioned something about removing the battery and doing something with the power button.
Tones of grey suggest a damaged LCD, but you should really hook it up to an external monitor to test if your computer is functioning normally or not.
I have a similar problem with my emachines laptop. It does work when I hookup the external monitor. However still nothing but an extremely faint display on the built-in monitor. How do I need to fix it?