Hi every one sorry for my en
a dell vostro 1310 was truned off when i check the laptop found a near power button a small flat cable was broken whith few water bout 16v on this wier was when i connect this wier laptop turen on but not show post or dell logo until windows loading apper i changed bios with a15 version but not help and reball MCH not help when i plug the external monitor video is fine and all post and logo is appear
I test this method but not success : when video was on external i press fn with f8 and display come on laptop disply even before loading
This not a software problem and i check all laptop board for water but nit found
Please tell me what problem and when is center of laptop switch video control. ?

i think problem cable flat ,with change or repair solve problem

try check the flexible cable, if it is ok, then try to check lcd screen