Malwarebytes in safe mode http://www.malwarebytes.org/StartUpLite.exe if that won't work you must remove manually,here's how:Manual System Security Removal Instructions:
Stop System Security Processes:
# Press “Alt+Ctrl+Delete“, then click on “Task Manager“. You can also launch the Task Manager instantly if you press Ctrl + Shift + ESC simultaneously. This is much easier than accessing it from Ctrl + Alt + Delete or the taskbar. It works for both Windows XP or Windows Vista.
# Select the process that you want to stop, then click on “End Process“.__>>
SystemSecurity.exe
05643921.exe
install.exe
Find and Delete these System Security Files:
1. From Start –> Search, then click on “For Files and Folders…“
2. From “What do you want to search for?” list on the left, click on “All files and folders”
3. Type the filenames on the search box, and choose the “Local Hard Drives” (normally, it’s C: drive)
4. Click on “Search“. That’s it! systemsecurity.exe
SystemSecurity.lnk
SystemSecurity on the Web.lnk
Uninstall SystemSecurity.lnk
%desktopdirectory%\system security.lnk
%desktopdirectory%\ws\config.udb
%desktopdirectory%\ws\init.udb
%desktopdirectory%\ws\languages\english.lng
%desktopdirectory%\ws\languages\german.lng
%desktopdirectory%\ws\languages\spanish.lng
%desktopdirectory%\ws\systemsecurity.exe
%programs%\system security\system security.lnk
%desktopdirectory%\ws\systemsecurity.exe
05643921.exe
install.exe
%desktopdirectory%\system security 2009.lnk
%programs%\system security\system security 2009 support.lnk
%programs%\system security\system security 2009.lnk
Remove System Security Registry Values:
# In Windows XP, from Start, and then click on Run.
# Type “regedit“, then click on OK.
You can easily navigate through the subkey if you know what you are looking for. Or, you can press “Ctrl + F” to locate the subkey that contains the value you want to edit. (F3 to Find Next)
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\run systemsecurity
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\uninstall\systemsecurity2009
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\uninstall\systemsecurity2009 displayicon
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\uninstall\systemsecurity2009 displayname
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\uninstall\systemsecurity2009 shortcutpath
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\uninstall\systemsecurity2009 uninstallstring