How To fix a missing file in WindowsXP

if you see this following message on windows startup
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windows could not start because the following file is missing or corrupt:
\windows\sytem32\config\system

you can attempt to repair this file by starting windows setup using the orginal setup CD-rom.
Selet "r" a the first sreen to start repair
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It very easy to fix the problem.
do not format your partition or install Windows XP. Just follow my instruction

1. Boot up from the WindowsXP CD (use the original instead the slipstream version).
2. in the screen "Welcome to Setup" press R to start the Recovery Console > press "R"
3. enter number to select your WindowsXP installed drive >press Enter.
4. enter Administrator password >press Enter
5. you will see command promt "c:\windows>" then type the command like bellow
6. c:\windows>cd \system32\config\ >press Enter
c:\windows\system32\config>del system press Enter
c:\windows\system32\config>del software press Enter
c:\windows\system32\config>del sam press Enter
c:\windows\system32\config>del security press Enter
c:\windows\system32\config>del default press Enter
c:\windows\system32\config>cd .. press Enter
c:\windows\system32>cd .. press Enter
c:\windows>cd repair press Enter
c:\windows\repair> copy system c:\windows\system32\config press Enter
c:\windows\repair> copy software c:\windows\system32\config press Enter
c:\windows\repair> copy sam c:\windows\system32\config press Enter
c:\windows\repair> copy security c:\windows\system32\config press Enter
c:\windows\repair> copy default c:\windows\system32\config press Enter
c:\windows\repair>EXIT press Enter