windows is corrupt-help me

  mattbell1975 22:00 02 Jan 03
Locked
  mattbell1975 22:00 02 Jan 03

for no reason my puter has just crashed i wasnt surfing and it wasnt doing much i got the message \windows\system32\config\system is missing or corrupt and it says to repair press r on first screen with windows xp disc however ive tried to load it but it wont load cd rom i can get to command prompt and i dont mind fomatting as ive backed all my files up on cd r but what command do i need to do this all i have is command prompt A:\ what do i need to do??? help

  mattbell1975 22:09 02 Jan 03

anyone?/????

  VoG™ 22:17 02 Jan 03
  mattbell1975 22:38 02 Jan 03

thanks VoG am doing it now

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