No display

U probably deactivated the display ! Reactivated by pressing the monitor key (on the function keys or the numerical ones usualy with a display pictogram on it) and the function key (Fn - usualy).

Also u can mount a normal display on the laptop to see if that one works (if it displays the boot messages) (- this will only asure u that u're video card has not crashed !!! )

Usually the keyboards have an fn key. Press fn + the key that has the sign of moon at the same time.

Also you may try to close your laptop and open it up and see if that will wake up the computer. Somehow your power setting on battery are messed up.

Hope that helps you.