If you follow the below instructions "to the letter', it should allow you to remove Security Shield from your system. It explains how to use Malwarebytes' Anti-Malware and the Rkill tool.
• Remove Security Shield 2012 or SecurityShield (Uninstall Guide)
Scroll down to where you see "Automated Removal Instructions for Security Shield 2012 using Malwarebytes' Anti-Malware:" and start from there. Pay close attention to the bold print in Step #9.
• IF per chance it's "My Security Shield" instead, see "Remove My Security Shield (Uninstall Guide)" The screenshots of the two should enable you to determine which one it is. Removal instructions are very similar.
• These links explain all you need to know about the use of the Rkill tool:
RKill - What it does and What it Doesn't - A brief introduction to the program
Rkill Download Center
If you run into any problems, or have any questions, please do not hesitate to post back and ask.
Best of luck..
I have security shield virus and need to copy rkill and malwarebytes on a clean computer and copy them to cd and then install them on my infected computer and run them. Please help? Thanks!