So earlier today my sister phoned me in tears and telling me that she broke her brand new laptop. I asked what happened, she told me that her 9 years old daughter clicked on a link after that laptop kind of froze. So she did a hard reboot and been welcomed by the screen asking her to send a text to certain number then they will unlock it. She has been smart enought not to send anything and wait untill i can get to her and see what can be done. So before i go off to her house, i never met a virus like that, will booting off an Linux LiveCD and launching an AV software that way help in killing the virus?