[Contracting]

So, This is a virus where the hackers Lock your desktop screen and tell you to pay to unlock it, Yes if you pay it will be unlocked, But its a scam and a hack so if you do pay cancel your credit card immediately. So lets get started.

Do not pay what so ever! You are being drawn in to their trap!
1. Restart computer with safe mode.
2. Once on your computer go to control panel.
3. Find system restore.
4. Select system restore and restore it to a few days back for e.g you got the virus on the 11/10/13 (English dates) Change it back to 9/10/13 Or you can select to change it back when you last downloaded something.
5. restart your pc and it should be fine any more help pm me or leave a comment.

White hat for the win bitches!

[Contracting]

And the new version of "Metropolitan police virus" shutdowns PC when you enter safe mode.Best thing is to use USB/CD boot antivirus and clean it or try to switch users it works on some versions of virus.

Yeah, you could always just make a new user, or use trojan killer, Just trying to help anyway