While you wait for answers, we may have found some information which could help you.
Click here for Power Button Lightdevice driver downloads for Dell Latitude E6400 PCI Port & PCI Controller?
My Dell Inspirion Windows 10 laptop has no network socket?
Right Click pad on my Lap top does not work, can this be fixed?
How to fix dell Inspiron 5040 laptop windows 7?
The Dell adapter can't be recognized?
My laptop is showing it is not connected to the network, but it is?