My laptop is blinking......

Hello,
I have HP with a celeron processor.My laptop has a serious problem.If i drag my laptop or moves its screen a littlebit it gets a serious power problem.It blinks just likes a tubelight and gradually the goes off.All the other function works properly but only the screen has no power supply and appears totally black.Then when i leave it for 1/2 hrs. the power comes back.Even the cooler sounds a lot and becomes hot too fast and spins a lot.Ya some days before my laptop charger got a spark and burnt.But i repaired it and still using it.

PlZ give me a solution to this.
Thank you