Heeeeeeeeeelp!!!!!!!!Does anyone know how to remove a youbo worm from my pc?

I try to open my memory card from my pc and it won't let me.says a file youbo.scr is missing or something and the files inside are shortcuts instead of normal files.After the incident with my memory card same thing happens with my ext.hard drive!Has anyone seen this before??I've already run 2 antiviruses, said they removed the infection but still nothing :(:(:(