While you wait for answers, we may have found some information which could help you.
Click here for Laptop Screen Dell
device driver downloads for Dell Latitude E6400 PCI Port & PCI Controller?
My laptop is showing it is not connected to the network, but it is?
dell inspiron 5040 plugged in not charging?
Right Click pad on my Lap top does not work, can this be fixed?
how to fix my g520 laptop?
Dell latitude c400 intermitent lines on screen?