"Windows\System32\config\system" file missing or corrupt

How to overcome this problem in Windows XP?

Here is a solution:

1. Boot using Windows Setup CD and enter into "Recovery Console" by pressing "R". Now Log into windows installation and enter admin password. Now give following commands at prompt:

copy %windir%\Repair\system %windir%\System32\Config

2. If it doesnt work, then again boot into "Recovery Console" and give following commands:

fixmbr

bootcfg /scan

bootcfg /rebuild

fixboot