What You Should Know About Blaster The Blaster worm (W32.Blaster.A and its variants) targets a security issue related to the Remote Procedure Call (RPC) function that Microsoft addressed with a released security update. Blaster targets computers with out-of-date software, and those computers remain at risk of infection until the update is installed.   Symptoms of Infection If your computer is infected, your computer may operate normally, may appear sluggish, or may restart every few minutes without your input.   Shutdown error. If your computer is infected, you may see this error message. Removal Steps :   Disable this shutdown by following the steps below during the countdown Click on Start, Run Type in CMD and press ENTER Type in the following command and press Enter SHUTDOWN -A This will terminate the shutdown, however in most cases the system may be to unstable to try to recover and may need to be rebooted anyway.                                                                                            OR 1. Click on Start, Run 2. Type in services.msc 3. Under Name look out for Remote Procedure Call (RPC). 4. Right Click Properties. Then click on the Recovery Tab and set First Failure, Second Failure and Subsequent Failures to TAKE NO ACTION. Turn off System Restore. Then Download and Run STINGER.EXE from http://vil.nai.com/vil/stinger/ Download Run the Microsoft Malicious Software removal tool from http://www.microsoft.com/downloads/details.aspx?FamilyId=AD724AE0-E72D-4F54-9AB3-75B8EB148356&displaylang=en After the virus is removed Download and Run the Windows xp Security Update for Blaster worm from http://www.microsoft.com/downloads/details.aspx?FamilyID=2354406c-c5b6-44ac-9532-3de40f69c074&displaylang=en Reboot the system and Turn On System Restore.