CORRUPTED OR MISSING \WINDOWS\SYSTEM32\CONFIG
If you got this error: This error is due to file missing or corrupt\WINDOWS\SYSTEM32\CONFIG\SYSTEM or \WINDOWS\SYSTEM32\CONFIG\SOFTWARE Insert and boot from your Windows XP CD. At the first R=Repair option, press the R key Press the number that corresponds to the correct location for the installation of Windows you want to repair.Typically this will be #1 Enter in the administrator password when requested cd \windows\system32\config Depending on which section was corrupted:ren software software.bad or ren system system.bad Depending on which section was corruptedcopy \windows\repair\systemcopy \windows\repair\software Take out the CD ROM and type exit