If you found this to be the case, then you might be right.
Bit was this screen available when you first installed Windows7.
The only way I've seen this to be the case is if you get a special promo disk from Microsoft and this gives you choice as to what your system was instated with.sort of
Actually these are located in Windows7 if you use an open source file manager called Surf.
Also note that c:\windows\windows\system32\en-US, there are 1,300+ files that are totally hidden here as well. These are the mui files that contain the actual dialog boxes that you view when you execute other program that ere not in the list of 5 files that you can see in Windows Explorer/.
It display totally invisible files, even if you have show hidden files, Don't display extension for known file types and show hidden operating system files.