Question : Isass.exe error

Hi,
I'm running Windows2000 profesional on my laptop. After starting the laptop Windows starts loading and after the load finished and all seems to be done corectly, a small response window popup on my screen telling me that Issas.exe has done an error and Windows will shut down. I have only one button on that window and that is Cancel. I have to press Cancel and then another small window popup informing me that in 60 seconds the system will rebout and the c:\WINNT\system32\isass.exe has ended. It start counting from 60 to 0 and when is 0, my laptop start the rebout sequence. This ia happening all the time so I have only 60 secs to fix the problem. In those 60 secs I had a look in my Task Manager, the isass.exe was still there, I choose to end task but it gives me the message "Access Denied"
Can someone to help me?

Answer : Isass.exe error

Look also here:

http://support.microsoft.com/default.aspx?scid=kb;en-us;220946


Symptoms That You May Experience If the Lsass.exe Process Stops
The information in this article applies to:

    * Microsoft Windows NT Server 4.0 Terminal Server Edition
    * Microsoft Windows 2000 Server
    * Microsoft Windows 2000 Advanced Server
    * Microsoft Windows 2000 Professional
    * Microsoft Windows NT Server 4.0
* Microsoft Windows NT Workstation 4.0

This article was previously published under Q220946
SYMPTOMS
If the Lsass.exe process stops on a Windows NT 4.0-based computer, the domain box may be missing from the logon dialog box. If you try to log on to the local computer, you may receive the following error message:
The system can not log you on (C0000037). Please try again or consult your system administrator.
You can ping the computer from the network; however, when you use the net command to gain access to the computer, the command does not work and you receive the following error message:
System error 6 has occurred
The handle is invalid
An event is not logged on computers that are running Windows NT 4.0 or Windows 2000.

In Windows 2000, when the Lsass.exe process stops the computer restarts after you receive the following message:

The system process LSASS.EXE terminated unexpectedly with status code X. The system will now shut down and restart.
The status code may be different depending on the conditions that caused the Lsass.exe process to stop.
CAUSE
The Lsass.exe process has unexpectedly stopped.
RESOLUTION
You may be able to resolve this issue by installing the latest service pack or security roll-up for your version of Microsoft Windows. For additional information about how to do so, click the article numbers below to view the articles in the Microsoft Knowledge Base:

152734 How to Obtain Windows NT Version 4.0 U.S. Service Pack

260910 How to Obtain the Latest Windows 2000 Service Pack
If the issue continues to occur, contact Microsoft Technical Support for assistance with this issue. For a complete list of Microsoft Technical Support phone numbers and information about support costs, please visit the following Microsoft Web site:

United States Support Options Overview
MORE INFORMATION
The status code in one of the error messages is -1073741819. If you convert this number from decimal to hexadecimal, it becomes C0000005, which is the code for an access violation:

//
// MessageId: STATUS_ACCESS_VIOLATION
//
// MessageText:
//
// The instruction at "0x%08lx" referenced memory at "0x%08lx". The memory
// could not be "%s".
// #define STATUS_ACCESS_VIOLATION ((NTSTATUS)0xC0000005L) //
You can use Dr.Watson to capture the information from the Lsass.exe process. If Dr.Watson does not capture the information about the Lsass.exe process, you may want to set up the Userdmp.exe tool.