No. Certain files are hidden by default. You can reveal them by opening any folder, clicking on tools, folder options. View Options, view hidden files and folders.
No it does not
You need to change your Windows Defaults. This option is found in the Control Panel. You can choose which program to open files with by default. It sounds to me like all your files have a Windows Media Player Default setting on.
C:\Windows\
c:\windows\system32
Data files for what? The system? Undoubtedly that'd be the system32 folder, but your best bet, look in the C:\WINDOWS\ folder for all of them.
libraries
By default, Windows hides the extensions of files when viewed in Windows Explorer and on the Windows desktop. You may unhide all known file types by opening Windows Explorer, selecting Tools > Folder Options, clicking the View tab, and removing the checkmark to ñhide file extensions for known files types.î
The program Windows Desktop Search, as it was known on Windows XP, was a default program on all Windows XP computers that searched your computer for files with a given keyword. The program is now called Windows Search but still does the same basic function.
No
By default, Windows hides the extensions of files when viewed in Windows Explorer and on the Windows desktop. You may unhide all known file types by opening Windows Explorer, selecting Tools > Folder Options, clicking the View tab, and removing the checkmark to ñhide file extensions for known files types.î
All the files under C:\Windows, which is what contains the OS.
What are the default groups that can be found in Server 2008