Repairing sbs 2003

I have sbs 2003 server and i have started receiving an error message saying "Lsass.exe: When trying to update a password the value return indicates that the value passed as current password is not correct". My system reboots automatically after that error message. I have tried booting in to safe mode and last known good configuration... but no avail, i get the same error message again and again. Is there anything i can try out from my end???

I want to know if you have SBS System State backup. If yes and if you can boot into DSRM (Directory Services Restore Mode) then ill suggest you to perform a system state restore. You can refer to the below article for the same.

Backing Up and Restoring Windows Small Business Server 2003

In case that doesn't help then you can revert back to me for further help.