Network and Ethernet Controller driver

I recently sent in my Inspiron M5040 laptop in to get repaired because it got severely water damaged and when i got it back i culdnt connect to the internet wirelessly so i tried pluggin in my ethernet cable an that wouldnt work either so i played around with my computer a little bit and saw that my ethernet and network controller drivers weren properly installed. How do i get those two drivers with no internet connect? Is there any way i can get a disk mailed to me with all of the up to date drivers i ned or do i need to ship my laptop back in to dell?