What Is Network Controller Driver Dell E64020

Many Dell users reported that the network controller driver is missing and as a result, they cannot access the wireless network on Dell. If you keep finding a solution to it, this post is exactly for you.

DriverDell latitude e6420 ethernet driverNetwork

Network Controller

I recently replaced my 320GB Toshiba hard drive with a 500GB Hitachi hard drive on my Dell latitude E6410. At the end of my attempt of installing windows 7 64bit, I get a message stating
'Windows setup could not configure windows to run on this computer's hardware'.
It seems strange as my previous Toshiba hard drive installed windows 7 just fine. Could it be the difference of GB that is causing this problem?
I have read multiple sources on forums telling others to change the bios setting for the hard drive to SATA or IDE. My bios settings only had Legacy or UFEI settings. Tried both with no successes.
Any ideas of what could be the problem? Any help is greatly appreciated.