While you wait for answers, we may have found some information which could help you.
Click here for Laptop Turn ScreenDell latitude c400 intermitent lines on screen?
The Dell adapter can't be recognized?
how to repair my blank screen?
audio device drivers for Dell Latitude E6400?
My Dell Inspirion Windows 10 laptop has no network socket?
How to fix dell Inspiron 5040 laptop windows 7?