AHHHHHHH! I need help!

I need really big help! I’m having virus attacks, and I can’t fix my comp. I’ve run a few anti-virus programs, but I can’t fix anything! How could I fix this!?! Even my desktop changed to just a blue screen, and it says Security Warning right in the middle with some other information under it. I can’t fix anything! Is there anything I could do?

AHHHHHHH!!

[color=DeepSkyBlue]!GB! - PEACE - [/color]