Laptop show only Black sceern

[alexey14]

After my flight now I just noticed my laptop screen show only black screen
The laptop is not touch screen
When I hold and touch behind of screen with my finger ( the laptop door) than screen work perfectly but without my finger it show only black screen
Whats wrong ? What should I do?

 

[Mind Games]

Reseat the battery, if you cannot remove the battery plug it into a power source.