Missing system32\config\system

1. Insert CD`s Bootable Windows XP

2. Then choose --> Repair "r"

3. Select drive you want repair --> 1: c:\windows (enter)

4. Goto folder : c:\windows\system32\config\
then :
rename c:\windows\system32\config\system system.bad
rename c:\windows\system32\config\software software.bad

5. And then go to c:\windows\repair
copy file "system" and "software" to --> c:\windows\system32\config\
c:\windows\repair\>copy system c:\windows\system32\config\
c:\windows\repair\>copy software c:\windows\system32\config\

6. Remove CD Boottable from CD-Drive

7. Exit and done