Isass.exe

Windows Server 2003 ISASS.EXE System error

I recently removed and re installed my hard drives from my HP server running windows server 2003 and when i restarted the server i received the following message ISASS.EXE - SYSTEM ERROR Security accounts manager initialization failed because of the following error: directory service cannot start....

how to get rid of lsass.exe

I have a dell laptop inspiron 1501 that is just a little over a year old. when we turn it on it loads the windows screen and goes directly to a blue/gray screen that says lsass.exe. Cannot go any further...can i repair this some way by logging on in safe mode? Please help..have been without my...