acer laptop screen bottom side is covered by white shadow

lemabest

Honorable
Sep 6, 2013
1
0
10,510
my acer aspire 5250 laptop bottom side screen is covered by a white shadow and it is avoided if the laptop is used more or if the laptop is on work more than 2 hours then the shadow will be eliminate and mike only one white line on the screen and the screen below the line will be vibrate and the laptop performance will be low what can i do to solve the problem