Hello everyone. I must say this is the first time I have ever asked this question and I have been using Mac since 2006. When my son plays Minecraft on my laptop it will freeze up. What can I do besides powering it down? I have tried to do key shortcuts to bring me back to finder but nothing happens. HELP....or I am going to have to keep my kid from my laptop which please don't make me do...he can be really annoying...but lovable.