Josh is trying to boot up his mother's PC and it seems to be locked. Leo says it sounds like the BIOS lock is engaged, but it wants him to buy a MoneyPak card and send it to the Department of Justice.
Leo says that's a scam. It's a virus that his mother's comptuer got bit by. It's called RansomWare. There are ways to remove it, but the best course of action is to take the computer into Best Buy and have the Geek Squad clean it off. Or, he can just format the hard drive and reinstall Windows from a known, good source.