half a star for realism.
What is there to do? I tried to open 5 different programs and always received the same two error messages (and only one was mildly amusing). In the start menu I could not do anything except perhaps opening the command line (although I'm not sure if this was me or just the game itself). Once the command line was open, I received the message "you're being hacked", then I got a bluescreen (in the game). And now I can't do anyhting anymore, it's just stuck on the blue screen.
It might be realistic, but it certainly isn't fun.