screen gets blink when toching the mouse pad

[Msm Simar]

Im using Dell inspiron 15 5000 series,
When ever i use my my loptop i used to touch mouse pad but wheever i touch my screen get blinking what would be the problem and how could it be solved.

 

[helpstar]

maybe the screen cable got loose:
https/www.youtube.com/watch?v=hPd7r9hylNc