.exe files are not what Windows is looking for. These .exe packages need to be extracted so that you have a few files, including .inf and .sys filetypes. You can do this by running the .exe on another machine, or by changing the filetype to .zip, navigating to the payload folder within, and copying the contents to your USB drive.
  I have been trying to install windows server 2016 on this R900 and i get as far as where you select what drive you want to install the OS on to. Problem is it will not show any of the drives that are in the machine. Not the HDD in the front cage, not the SSD in the front cage nore the USB drive in the internal socket, I really want to install the OS on the internal USB. It keeps prompting me to install the drivers so it will be able to see them but after spending several hours going through many Dell and Intel drivers, RAID, SAS, non-SAS drivers i am still no where closer. Does anyone know the proper driver I need for this? and if so where can i find it?  Thank You
PowerEdge R900 will not recognize HDD, SSD, or internal USB