Computer restarts by its self

[Guest]

My computer is shutting its self down and restarting. Before it shuts down it
displays a count down. It says something about lsass.exe and 128??

Event viewer is telling me this:

winlogon;

A critical system process, C:\WINDOWS\system32\lsass.exe, failed with status
code 128. The machine must now be restarted.

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.

The link to microsoft has no help at all.

Any ideas would be greatly appreciated. But please note that I am a novice
computer user so 'laymans' terms please

 

[Rich Barry]

You may have the sasser worm. Check here
http://www.tsgserver.com/pipermail/list_tsgserver.com/2004-June/002329.html