i have use command attrib -s -r -h /s /d C:\*.*
The switches you have used do the following:
-s: Clears the system file attribute
-r: Clears the read-only file attribute
-h: Clears the hidden file attribute
/s: Does the above to all files in the current directory and all its subdirectories
/d: Does the above not only to files but to directories (folders) aswell
C:\*.* sets the current directory for the command to the root directory of the C: drive, and specifies the command to change attributes to all files and all file extensions, on all of the drive.
What you have done can't be reversed easily. You can however manually with the attrib command set the attributes to what they originally were, one file at a time, if you know...