Alienware x51 R2 Fresh Windows 7 Installation Drivers Question

Hey guys !

I would like to switch from Windows 10 to Windows 7 pro sp1 64bit on my Alienware x51 R2.

Could any1 write me here which drivers(with links would be super!:)) i need to instal exactly ? and in which order so i wont recive any errors in Device Menager. I know there is one guide how to clean install Win 7 but i havent seen which drivers exacly i have to install.