While you wait for answers, we may have found some information which could help you.
Click here for Mode Safe BlankDELL won't turn on?
dell inspiron 5040 plugged in not charging?
audio device drivers for Dell Latitude E6400?
The Dell adapter can't be recognized?
My Dell Inspirion Windows 10 laptop has no network socket?
device driver downloads for Dell Latitude E6400 PCI Port & PCI Controller?