Chosen Solution

at first its wont turn on at all, I opened it, put it back together, now its turn on but not the screen, and once the screen was getting very hot, I have turn it off and power back on again, and the screen still not come on

If the fan is spinning when you switch on the laptop and no display this could be a problem with the memory. Try taking it out and putting it back and also if you have 2 memory cards try with one. Try connecting to a monitor. If it works on a monitor the problem is with the inverter or LCD cable.