automatic shutdown and restart

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Get error message that system is shutiing down and to save all work in progress... shutdn is initiated by NT Authority/system... code 1073741819.... Can someone tell me what's causing this and how to remedy it.
 
Get error message that system is shutiing down and to save all work in progress... shutdn is initiated by NT Authority/system... code 1073741819.... Can someone tell me what's causing this and how to remedy it.
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What You Should Know About the Blaster Worm
http://www.microsoft.com/security/incident/blast.asp

What You Should Know About the Sasser Worm and Its Variants
http://www.microsoft.com/security/incident/sasser.asp

PSS Security Response Team Alert - New Worm Sasser
http://www.microsoft.com/technet/Security/alerts/sasser.mspx


Mitigation Steps for Affected Computers
If your computer is infected with the W32.Sasser.worm,
please do the following:

Enable the Windows XP Internet Connection Firewall or a
third-party firewall on the affected computer.
Disconnect the computer from the Internet.
Restart the computer. If you have problems rebooting,
reboot in safe mode.
Press CTRL+ALT+DEL.
Click the Task Manager.
Click the Processes tab.
Press and hold the CTRL key and then click
C:\WINDOWS\avserve.exe and c:\WINDOWS\system32\*_up.exe.
Click the End Task button.
Click Start.
Click Search and then search for and delete the following
files:
C:\WINDOWS\avserve.exe
C:\WINDOWS\system32\*_up.exe
Click Start again, click Run, and then type: regedit32
Click OK.
In Registry Editor, locate and delete the following
registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersi
on\Run "avserve.exe" = C:\WINDOWS\avserve.exe
Connect the computer to the Internet.
Go to the Windows Update site, and click the Scan for
Updates button.
Download and install the critical updates recommended
after the scan.



http://www.microsoft.com/security/incident/sasser.asp
The stinger tool may also be helpful in detecting and
cleaning the Sasser worm.
http://vil.nai.com/vil/stinger/

Download this update
Microsoft Security Bulletin MS04-011
Security Update for Microsoft Windows (835732)
http://www.microsoft.com/technet/security/bulletin/MS04-011.mspx

Enable your firewall.

MORE ON SECURITY:

Three steps you can take to improve your computer's security:
http://www.microsoft.com/security/protect/

321050 Description of a Personal Firewall
http://support.microsoft.com/?id=321050

More info:

http://securityresponse.symantec.com/avcenter/venc/data/w32.sasser.worm.html
http://www.bullguard.com/antivirus/vit_randon_i.aspx
http://www.vsantivirus.com/sasser-a.htm

Good luck
 
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