While you wait for answers, we may have found some information which could help you.
Click here for Usb Port LaptopHow to fix dell Inspiron 5040 laptop windows 7?
audio device drivers for Dell Latitude E6400?
device driver downloads for Dell Latitude E6400 PCI Port & PCI Controller?
Dell latitude c400 intermitent lines on screen?
DELL won't turn on?
My Dell Inspirion Windows 10 laptop has no network socket?