That's pretty funny (no offense). Sounds like you downloaded so virus probably some type of Reveton ransom-ware. Which tries to extort money from you by acting like your in trouble legally.
To fix it I would probably just restart my computer go into safe mode and run a "good" antivirus program. If that fails just type into google reventon ransom-ware and look up some solutions.
You are not going to jail. Police don't care about people who pirate for their own use over 99.99 percent of the time. If you did get into legal doo-doo you would get a letter from your isp or by the mail from the publisher or someone on behalf of the publisher saying you pirated x material from them and to pay up. But no one does that anymore since it is hard to prove that the person actually pirated anything and not someone who is piggy backing on the wireless internet.
Before you fix your computer take a picture of the screen with a digital camera or something I'm curious on how legit the virus looks like.
Also don't mess with communities you don't understand aka piracy. Unless you own a potato minecraft will run. But sadly if minecraft is complaining about your video drivers you are running probably running potato.
Also, use TPB next time. Don't download it from unknown sources.
Shhh..
- No discussions of software piracy, illegal material, or linking to these illegal activities will be tolerated.