delay of screen when starting

[sai srujana]

i have a 15r 5537 laptop and when i used on it its getting a blank screen for a few min and then starting. i have changed the mother board, battery when i consulted the dell service.i have installed all the graphic drives which they suggested. but the problem remains as it .please give any idea to overcome this

 

[turkey3_scratch]

Perhaps a problem with the screen?