Another Solution comes to my mind after trying so much of hard after installing windows and again I prompted with error of "Cd/DVD device drive driver is missing"
For all fellows, trying to install windows 7 via usb stick might have tried different different ways like "AHCI to IDE", "USB3.0 to USB2.0", Corrupted Windows or Reinstall the windows.. etc etc..
to all this I'm having only one solution i.e. is "RUFUS"
Its the only tools to help u making bootable usb disk and when done with it, i don't encounter any driver missing error..
try this and report back.