I have a DEll 4600 with Windows XP Professional every now and then a window appears that contains the following: (This system is shutting down. Please save all work in progress and log off. Any unsaved changes will be lost. This shutdown was initiated by NT AUTHORITY\SYSTEM Message The system process C:\WINDOWS\system32\services.exe terminated unexpectedly with status code-1073741790. The system will now shut down and restart). Then the computer shuts down. I have run Spybot, Adaware and Avast Anti virus. Do you want me to send a HiJackThis log?