While you wait for answers, we may have found some information which could help you.
Click here for Green Lights Turn
Dell latitude c400 intermitent lines on screen?
The Dell adapter can't be recognized?
device driver downloads for Dell Latitude E6400 PCI Port & PCI Controller?
My Dell Inspirion Windows 10 laptop has no network socket?
how to repair my blank screen?
My laptop is showing it is not connected to the network, but it is?