How do I get rid of this virus?

Question by Super Nothing: How do I get rid of this virus?
I’d like educated answers please.
I got this damn virus thanks to my sister who just had to download some thing from myspace. It ends up being some kind of spyware trying to get me to buy their crap. My computer is lagging up from this. It brings up this damn window titled “Security Alert center”. Now I’m not too shabby with computers, so I noticed this was a virus right away. It tells me to remove win32.zafi.b. On top of this, my browser is hijacked. I can’t download any virus removal. It also won’t let me open malwarebytes that i have on my computer. Any help? I don’t want to resort to using the VAIO recovery thing. I have too much stuff on this computer. HELP!
I hope that works sly >Best answer:

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