My hard drive died last week on my Dell E6520.
I got my hands on a new hard drive and after connecting it I reinstalled Windows 7 (64 bit).
All went fine. When windows rebooted the screen's resolution needed to be fixed and the computer could not detect any wifi signals nor could it go online via an ethernet wire, etc.
I tried reinstalling all the drivers from the 4 dell CD I had. However, nothing changed.
I went online with a different computer to dell's site and put in my service tag It only listed two BIOS files.
I am at a loss as what to do.