Hi everyone. I'm new here and I think I'm in trouble! I have a sony Vaio which has decided not to start up anymore. I shut down the computer over the weekend and when I tried to start up again it doesn't respond. I have tried the F8 button and selected safe mode but it just returns to a black screen offering the same start up options again. Am caught in a vicious circle here and need some advice. I have no idea what has happened and it all seems a bit bleak. Please can someone help? Thanks.