The screen needs to be replaced.  
Hi , My DELL inspiron 3453 has issue with not taking power, for that mother board was replaced . After the mother board replacement half of screen shows with multicolored bars. when it connected to secondary monitor full screen can be visible without an issue . Can anyone help me out to figure out the reason behind this issue ?[IMAGE]screen with multicolored bars  
DELL inspiron 3453 half screen with multicolored bars