Vertical Line Visibility on Screen

1. I have a ACER laptop and other day I found that a vertical line was staring in my face from the screen.

2. I interacted with Acer service center and they informed by visual inspection that this vertical line could be due to some loose connection inside the screen or else one may be required to change the TFT screen. I am just hoping that the it may be a fault due to a loose connection.