Hi Can anyone help? Bare in mind I'm a bit of a novice when it comes to computers. Recently my firewall vanished when I was on the net and due to lazyness I kept on putting off reinstalling it. Today I paid for that mistake when my computer shut itself off after being on for about two minutes. Now when ever it turns on it gives me two minutes and then restarts itself. I'd do a system restore but all my itunes are on there. I think it has something to do with not having enough memory to be able to operate but how do I do something about this in the space of two mins? Please help.