While you wait for answers, we may have found some information which could help you.
Click here for Charger Dell PluggedThe Dell adapter can't be recognized?
Dell latitude c400 intermitent lines on screen?
My laptop is showing it is not connected to the network, but it is?
How to fix dell Inspiron 5040 laptop windows 7?
device driver downloads for Dell Latitude E6400 PCI Port & PCI Controller?
how to repair my blank screen?