what to in such situation
The forum you posted to is for the discussion of Microsoft Security Essentials antimalware. If you are using Windows XP you can get help here - http://social.answers.microsoft.com/Forums/en-US/category/windowsxp
Vista here - http://social.answers.microsoft.com/Forums/en-US/category/windowsvista
or Windows 7 here - http://social.answers.microsoft.com/Forums/en-US/category/windows7
Jim