Hello...........yesterday when my Wife tried to go on our Dell Demension 4600/ Windows XP she recieved the following error message: lsass.exe- System Error "an invaled parameter was passed to a service or function". When we acknowledged this it just kept looping back to this same message. We tried starting in safe mode and the same thing happens. The latest lsass.exe System Error message says "when trying to update a password, the return status indicates the value provided as the current password is incorrect. We have 2006 Norton Pro (Symantec?) on this machine. One last thing; when we were last sucsessfuly on we may have shut down inproperly. Not letting thing go thru the shut down proceedures. We are dead in the water now. It just keeps recycling thru this vicious loop. Help us please. Thank you in advance.